<SUBMISSION>
<ACCESSION-NUMBER>0000912057-02-020663
<TYPE>10-Q
<PUBLIC-DOCUMENT-COUNT>7
<PERIOD>20020331
<FILING-DATE>20020515
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>IRON MOUNTAIN INC/PA
<CIK>0001020569
<ASSIGNED-SIC>4220
<IRS-NUMBER>232588479
<STATE-OF-INCORPORATION>PA
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>10-Q
<ACT>34
<FILE-NUMBER>001-13045
<FILM-NUMBER>02650692
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>745 ATLANTIC AVENUE
<CITY>BOSTON
<STATE>MA
<ZIP>02111
<PHONE>6175354766
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>745 ATLANTIC AVENUE
<CITY>BOSTON
<STATE>MA
<ZIP>02111
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>PIERCE LEAHY CORP
<DATE-CHANGED>19960807
</FORMER-COMPANY>
</FILER>
<DOCUMENT>
<TYPE>10-Q
<SEQUENCE>1
<FILENAME>a2079805z10-q.txt
<DESCRIPTION>FORM 10-Q
<TEXT>
<Page>
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------

                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549

                            ------------------------

                                   FORM 10-Q

(MARK ONE)

<Table>
<C>        <S>
   /X/     QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
           SECURITIES EXCHANGE ACT OF 1934
</Table>

                 FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2002
                                       OR

<Table>
<C>        <S>
   / /     TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
           SECURITIES EXCHANGE ACT OF 1934
</Table>

        FOR THE TRANSITION PERIOD FROM ______________ TO ______________

                         COMMISSION FILE NUMBER 1-13045

                            ------------------------

                           IRON MOUNTAIN INCORPORATED

             (Exact Name of Registrant as Specified in its Charter)

<Table>
<S>                                          <C>
            PENNSYLVANIA                                  23-2588479
   (State or Other Jurisdiction of           (I.R.S. Employer Identification No.)
   Incorporation or Organization)

                      745 ATLANTIC AVENUE, BOSTON, MA 02111
          (Address of Principal Executive Offices, Including Zip Code)
</Table>

                                 (617) 535-4766
              (Registrant's Telephone Number, Including Area Code)

                            ------------------------

    Indicate by check mark whether the registrant: (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days. Yes /X/  No / /

    Number of shares of the registrant's Common Stock outstanding as of May 3,
2002: 84,466,340

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
<Page>
                           IRON MOUNTAIN INCORPORATED

                                     INDEX

<Table>
<Caption>
                                                                                       PAGE
                                                                                     --------
<S>        <C>         <C>                                                           <C>
PART I -- FINANCIAL INFORMATION

Item 1            --   Unaudited Consolidated Financial Statements

                       Consolidated Balance Sheets at March 31, 2002 and December
                         31, 2001 (Unaudited)......................................       3

                       Consolidated Statements of Operations for the Three Months
                         Ended
                         March 31, 2002 and 2001 (Unaudited).......................       4

                       Consolidated Statements of Cash Flows for the Three Months
                         Ended
                         March 31, 2002 and 2001 (Unaudited).......................       5

                       Notes to Consolidated Financial Statements (Unaudited)......    6-19

Item 2            --   Management's Discussion and Analysis of Financial Condition
                         and Results of Operations.................................   20-24

Item 3            --   Quantitative and Qualitative Disclosures About Market
                         Risk......................................................      24

PART II -- OTHER INFORMATION

Item 6            --   Exhibits and Reports on Form 8-K............................      25

                       Signature...................................................      26
</Table>

                                       2
<Page>
PART I. FINANCIAL INFORMATION

ITEM 1. UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

                           IRON MOUNTAIN INCORPORATED

                          CONSOLIDATED BALANCE SHEETS
                                 (IN THOUSANDS)
                                  (UNAUDITED)

<Table>
<Caption>
                                                              MARCH 31,    DECEMBER 31,
                                                                 2002          2001
                                                              ----------   ------------
<S>                                                           <C>          <C>
ASSETS
Current Assets:
  Cash and cash equivalents.................................  $   11,419    $   21,359
  Accounts receivable (less allowances of $17,873 and
    $17,086, respectively)..................................     228,399       219,050
  Deferred income taxes.....................................      31,668        31,140
  Prepaid expenses and other................................      40,502        37,768
                                                              ----------    ----------
    Total Current Assets....................................     311,988       309,317
Property, Plant and Equipment:
  Property, plant and equipment.............................   1,245,258     1,190,537
  Less--accumulated depreciation............................    (261,749)     (238,306)
                                                              ----------    ----------
    Net Property, Plant and Equipment.......................     983,509       952,231
Other Assets, net:
  Goodwill..................................................   1,521,576     1,529,547
  Customer relationships and acquisition costs..............      39,756        32,884
  Deferred financing costs..................................      19,666        19,928
  Other.....................................................      15,053        15,999
                                                              ----------    ----------
    Total Other Assets, net.................................   1,596,051     1,598,358
                                                              ----------    ----------
    Total Assets............................................  $2,891,548    $2,859,906
                                                              ==========    ==========
LIABILITIES AND SHAREHOLDERS' EQUITY
Current Liabilities:
  Current portion of long-term debt.........................  $   37,415    $   35,256
  Accounts payable..........................................      69,476        64,596
  Accrued expenses..........................................     159,695       153,105
  Deferred income...........................................      85,474        85,894
  Other current liabilities.................................      17,599        20,158
                                                              ----------    ----------
    Total Current Liabilities...............................     369,659       359,009
Long-term Debt, net of current portion......................   1,465,812     1,460,843
Other Long-term Liabilities.................................      20,309        23,705
Deferred Rent...............................................      18,370        17,884
Deferred Income Taxes.......................................      58,704        47,213
Minority Interest...........................................      62,062        65,293
Shareholders' Equity:
  Common stock..............................................         844           843
  Additional paid-in capital................................   1,008,460     1,006,836
  Accumulated deficit.......................................     (91,177)     (103,695)
  Accumulated other comprehensive items.....................     (21,495)      (18,025)
                                                              ----------    ----------
    Total Shareholders' Equity..............................     896,632       885,959
                                                              ----------    ----------
    Total Liabilities and Shareholders' Equity..............  $2,891,548    $2,859,906
                                                              ==========    ==========
</Table>

  THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL
                                  STATEMENTS.

                                       3
<Page>
                           IRON MOUNTAIN INCORPORATED

                     CONSOLIDATED STATEMENTS OF OPERATIONS
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)
                                  (UNAUDITED)

<Table>
<Caption>
                                                              THREE MONTHS ENDED
                                                                   MARCH 31,
                                                              -------------------
                                                                2002       2001
                                                              --------   --------
<S>                                                           <C>        <C>
Revenues:
  Storage...................................................  $183,436   $167,865
  Service and storage material sales........................   129,743    116,057
                                                              --------   --------
    Total Revenues..........................................   313,179    283,922
Operating Expenses:
  Cost of sales (excluding depreciation)....................   148,427    139,820
  Selling, general and administrative.......................    82,022     70,317
  Depreciation and amortization.............................    25,074     35,718
  Merger-related expenses...................................       300        801
                                                              --------   --------
    Total Operating Expenses................................   255,823    246,656
                                                              --------   --------

Operating Income............................................    57,356     37,266
Interest Expense, Net.......................................    32,880     33,987
Other Expense, Net..........................................      (262)    (9,187)
                                                              --------   --------
    Income (Loss) Before Provision (Benefit) for Income
      Taxes and Minority Interest...........................    24,214     (5,908)
Provision (Benefit) for Income Taxes........................     9,962     (8,837)
Minority Interest in Earnings (Losses) of Subsidiaries......       957       (270)
                                                              --------   --------
    Income before Extraordinary Item........................    13,295      3,199
Extraordinary Charge from Early Extinguishment of Debt (net
  of tax benefit of $445)...................................      (777)        --
                                                              --------   --------
    Net Income..............................................  $ 12,518   $  3,199
                                                              ========   ========
Net Income per Share--Basic:
  Income before Extraordinary Item..........................  $   0.16   $   0.04
  Extraordinary Charge from Early Extinguishment of Debt....     (0.01)        --
                                                              --------   --------
    Net Income per Share--Basic.............................  $   0.15   $   0.04
                                                              ========   ========
Net Income per Share--Diluted:
  Income before Extraordinary Item..........................  $   0.15   $   0.04
  Extraordinary Charge from Early Extinguishment of Debt....     (0.01)        --
                                                              --------   --------
    Net Income per Share--Diluted...........................  $   0.15   $   0.04
                                                              ========   ========
Weighted Average Common Shares Outstanding--Basic...........    84,372     83,141
                                                              ========   ========
Weighted Average Common Shares Outstanding--Diluted.........    86,002     84,890
                                                              ========   ========
</Table>

  THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL
                                  STATEMENTS.

                                       4
<Page>
                           IRON MOUNTAIN INCORPORATED

                     CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (IN THOUSANDS)
                                  (UNAUDITED)

<Table>
<Caption>
                                                              THREE MONTHS ENDED
                                                                   MARCH 31,
                                                              -------------------
                                                                2002       2001
                                                              --------   --------
<S>                                                           <C>        <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
  Net income................................................  $ 12,518   $  3,199
Adjustments to reconcile net income to income before
  extraordinary item:
  Extraordinary charge from early extinguishment of debt
    (net of tax benefit of $445)............................       777         --
                                                              --------   --------
Income before extraordinary item............................    13,295      3,199
Adjustments to reconcile income before extraordinary item to
  cash provided by operating activities:
  Minority interests........................................       957       (270)
  Depreciation and amortization.............................    25,074     35,718
  Amortization of deferred financing costs and bond
    discount................................................     1,224        495
  Provision for doubtful accounts...........................     3,838      2,381
  Foreign currency loss and other, net......................        66      9,693
Changes in Assets and Liabilities (exclusive of
  acquisitions):
  Accounts receivable.......................................   (14,133)    (9,558)
  Prepaid expenses and other current assets.................     1,268     (7,375)
  Deferred income taxes.....................................    10,300     (6,428)
  Accounts payable..........................................     5,170     (4,630)
  Accrued expenses and other current liabilities............     3,792      2,183
  Deferred income...........................................      (269)      (739)
  Deferred rent.............................................       488        391
  Other assets and long-term liabilities....................       199     (1,161)
                                                              --------   --------
    Cash Flows Provided by Operating Activities.............    51,269     23,899
CASH FLOWS FROM INVESTING ACTIVITIES:
  Capital expenditures......................................   (57,643)   (48,198)
  Cash paid for acquisitions, net of cash acquired..........    (7,756)   (34,773)
  Additions to customer acquisition costs...................    (1,622)    (2,307)
  Proceeds from sale of property and equipment..............       227         29
                                                              --------   --------
    Cash Flows Used in Investing Activities.................   (66,794)   (85,249)
CASH FLOWS FROM FINANCING ACTIVITIES:
  Net repayment of term loans...............................   (98,750)      (250)
  Repayment of debt.........................................   (27,547)   (35,484)
  Proceeds from borrowings..................................   134,323     82,355
  Debt repayment to minority shareholders...................    (2,147)    (6,560)
  Equity contributions from (distributions to) minority
    shareholders............................................       (18)    24,529
  Proceeds from exercise of stock options...................     1,388      2,539
  Financing and stock issuance costs........................    (1,955)      (235)
                                                              --------   --------
    Cash Flows Provided by Financing Activities.............     5,294     66,894
Effect of exchange rates on cash and cash equivalents.......       291     (1,841)
Increase (Decrease) in Cash and Cash Equivalents............    (9,940)     3,703
Cash and Cash Equivalents, Beginning of Period..............    21,359      6,200
                                                              --------   --------
Cash and Cash Equivalents, End of Period....................  $ 11,419   $  9,903
                                                              ========   ========
</Table>

  THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL
                                  STATEMENTS.

                                       5
<Page>
                           IRON MOUNTAIN INCORPORATED

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

                       (IN THOUSANDS, EXCEPT SHARE DATA)

                                  (UNAUDITED)

(1)  GENERAL

    The interim consolidated financial statements presented herein have been
prepared by Iron Mountain Incorporated (the "Company") without audit and, in the
opinion of management, reflect all adjustments of a normal recurring nature
necessary for a fair presentation. Interim results are not necessarily
indicative of results for a full year.

    The consolidated balance sheet presented as of December 31, 2001 has been
derived from the consolidated financial statements that have been audited by the
Company's independent public accountants. The unaudited consolidated financial
statements have been prepared pursuant to the rules and regulations of the
Securities and Exchange Commission. Certain information and footnote disclosures
normally included in the annual financial statements prepared in accordance with
generally accepted accounting principles have been omitted pursuant to those
rules and regulations, but the Company believes that the disclosures are
adequate to make the information presented not misleading. The consolidated
financial statements and notes included herein should be read in conjunction
with the consolidated financial statements and notes included in the Company's
Annual Report on Form 10-K for the year ended December 31, 2001.

    Certain reclassifications have been made to the 2001 financial statements to
conform to the 2002 presentation.

(2)  COMPREHENSIVE INCOME (LOSS)

    Statement of Financial Accounting Standards ("SFAS") No. 130, "Reporting
Comprehensive Income," requires presentation of the components of comprehensive
income (loss), including the changes in equity from non-owner sources such as
unrealized gains (losses) on hedging transactions, securities and foreign
currency translation adjustments. The Company's total comprehensive income
(loss) is as follows:

<Table>
<Caption>
                                                            THREE MONTHS ENDED
                                                                 MARCH 31,
                                                            -------------------
                                                              2002       2001
                                                            --------   --------
<S>                                                         <C>        <C>
Comprehensive Income (Loss):
  Net Income..............................................  $12,518    $ 3,199
  Other Comprehensive Loss:
    Foreign Currency Translation Adjustment...............   (4,515)      (788)
    Transition Adjustment Charge..........................       --       (214)
    Unrealized Gain (Loss) on Hedging Contracts...........    1,045     (4,040)
                                                            -------    -------
  Comprehensive Income (Loss).............................  $ 9,048    $(1,843)
                                                            =======    =======
</Table>

(3)  DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES

    Effective January 1, 2001, the Company adopted the provisions of SFAS
No. 133, "Accounting for Derivative Instruments and Hedging Activities." SFAS
No. 133 requires that every derivative instrument be recorded in the balance
sheet as either an asset or a liability measured at its fair value. The adoption
of SFAS No. 133 resulted in the recognition of a derivative liability and a
corresponding

                                       6
<Page>
                           IRON MOUNTAIN INCORPORATED

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

                       (IN THOUSANDS, EXCEPT SHARE DATA)

                                  (UNAUDITED)

(3)  DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (CONTINUED)
transition adjustment charge to accumulated other comprehensive items of
approximately $214 as of March 31, 2001.

    Periodically, the Company acquires derivative instruments that are intended
to hedge either cash flows or values which are subject to exchange or other
market price risk, and not for trading purposes. The Company has formally
documented its hedging relationships, including identification of the hedging
instruments and the hedge items, as well as its risk management objectives and
strategies for undertaking each hedge transaction.

    The Company has entered into three interest rate swap agreements, which are
derivatives as defined by SFAS No. 133 and designated as cash flow hedges. These
swap agreements hedge interest rate risk on certain amounts of its term loan as
well as certain variable operating lease commitments. For all qualifying and
highly effective cash flow hedges, the changes in the fair value of the
derivatives are recorded in other comprehensive income. As a result of these
interest rate swap agreements, the Company has recorded a derivative liability
of and a corresponding charge to accumulated other comprehensive loss of $7,903
($5,026, net of tax) and $9,857 ($5,857, net of tax) at March 31, 2002 and
December 31, 2001, respectively.

    For the three months ended March 31, 2002 and 2001, the Company recorded
additional interest expense of $1,797 and $59 resulting from interest rate swap
settlements and $439 and $9 in additional rent expense, respectively. All
interest rate swap agreements were determined to be highly effective whereby no
ineffectiveness was recorded in earnings.

(4)  GOODWILL AND OTHER INTANGIBLE ASSETS

    Effective January 1, 2002, the Company adopted the provisions of SFAS
No. 141, "Business Combinations" and SFAS No. 142, "Goodwill and Other
Intangible Assets." SFAS No. 141 requires all business combinations initiated
after June 30, 2001 to be accounted for using the purchase method. Under SFAS
No. 142, goodwill and intangible assets with indefinite lives are no longer
amortized but are reviewed annually for impairment or more frequently if
impairment indicators arise. Separable intangible assets that are not deemed to
have indefinite lives will continue to be amortized over their useful lives. The
adoption of SFAS No. 142 has the impact of reducing our amortization of goodwill
and intangibles from $16,068 for the first quarter of 2001 to $1,339 for the
same period of 2002.

    Based on the Company's initial impairment evaluation, a reporting unit in
the Company's international operating segment did not pass the initial SFAS 142
valuation test. The Company is currently performing the second level of testing
as required by SFAS 142 to determine the amount of the adjustment to reduce the
carrying value of that reporting unit's goodwill to its implied fair value. The
total carrying value of goodwill subject to the second level of testing does not
exceed $6,927 after adjusting for minority interests. The affected operating
unit failed the initial SFAS 142 valuation test due to a reduction in the
expected future performance of that unit resulting from a deterioration of the
local economic environment. Under SFAS 142, the impairment adjustment recognized
upon adoption of the new rules will be reflected as a cumulative effect of
accounting change in the Company's financial results as of January 1, 2002 and
reported in the Company's financial results for the period ending

                                       7
<Page>
                           IRON MOUNTAIN INCORPORATED

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

                       (IN THOUSANDS, EXCEPT SHARE DATA)

                                  (UNAUDITED)

(4)  GOODWILL AND OTHER INTANGIBLE ASSETS (CONTINUED)
June 30, 2002. Impairment adjustments recognized after adoption, if any, are
generally required to be recognized as operating expenses.

    The changes in the carrying value of goodwill attributable to each
reportable operating segment for the period ended March 31, 2002 are as follows:

<Table>
<Caption>
                                         BUSINESS     OFF-SITE
                                         RECORDS        DATA                      CORPORATE      TOTAL
                                        MANAGEMENT   PROTECTION   INTERNATIONAL    & OTHER    CONSOLIDATED
                                        ----------   ----------   -------------   ---------   ------------
<S>                                     <C>          <C>          <C>             <C>         <C>
Balance as of December 31, 2001.......   $985,038     $236,850      $265,760       $41,899     $1,529,547
Goodwill acquired during the period...         --           --            --         4,769          4,769
Adjustments to goodwill...............     (4,206)          35        (8,476)          (93)       (12,740)
Impairment losses.....................         --           --            --            --             --
                                         --------     --------      --------       -------     ----------
Balance as of March 31, 2002..........   $980,832     $236,885      $257,284       $46,575     $1,521,576
                                         ========     ========      ========       =======     ==========
</Table>

    In connection with adopting SFAS 142, the Company reassessed the useful
lives and the classification of its identifiable intangible assets and
determined the useful lives of customer relationships and acquisition costs to
be between 5 and 30 years. The components of the Company's amortizable
intangible assets at March 31, 2002 are as follows:

<Table>
<Caption>
                                                     GROSS CARRYING   ACCUMULATED
                                                         AMOUNT       AMORTIZATION
                                                     --------------   ------------
<S>                                                  <C>              <C>
Customer Relationships and Acquisition Costs.......     $49,030         $ 9,274
Non-Compete Agreements.............................      20,002          13,831
Deferred Financing Costs...........................      24,508           4,785
                                                        -------         -------
Total..............................................     $93,540         $27,890
                                                        =======         =======
</Table>

    Amortization expense for intangible assets (excluding deferred financing
costs which are amortized through interest expense) during the first quarter of
2002 was $1,339. Estimated amortization expense for the remainder of 2002 and
the five succeeding fiscal years is as follows:

<Table>
<Caption>
                                                    ESTIMATED AMORTIZATION EXPENSE
                                                    ------------------------------
<S>                                                 <C>
2002 (remainder)..................................              $3,998
2003..............................................               3,423
2004..............................................               2,562
2005..............................................               1,879
2006..............................................               1,607
2007..............................................               1,248
</Table>

                                       8
<Page>
                           IRON MOUNTAIN INCORPORATED

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

                       (IN THOUSANDS, EXCEPT SHARE DATA)

                                  (UNAUDITED)

(4)  GOODWILL AND OTHER INTANGIBLE ASSETS (CONTINUED)
    Actual results of operations for the three-month period ended March 31, 2002
and pro forma results of operations for the three-month period ended March 31,
2001 had the Company applied the non-amortization provisions of SFAS 142 as of
January 1, 2001 are as follows:

<Table>
<Caption>
                                                            THREE MONTHS ENDED
                                                                 MARCH 31,
                                                            -------------------
                                                              2002       2001
                                                            --------   --------
<S>                                                         <C>        <C>
Net Income (Loss) before Provision for Income Taxes and
  Minority Interest.......................................  $24,214    $(5,908)
Add: Goodwill Amortization................................       --     14,376
Provision for Income Taxes................................    9,962      4,624
Minority Interest in Earnings of Subsidiaries.............      957        415
                                                            -------    -------
Adjusted Income before Extraordinary Items................   13,295      3,429
Extraordinary Charge from Early Extinguishment of Debt....     (777)        --
                                                            -------    -------
Net Income................................................  $12,518    $ 3,429
                                                            =======    =======
Net Income per Share--Basic
Net Income before Extraordinary Items, as Reported........  $  0.16    $  0.04
Add: Goodwill Amortization, Net of Change in Provision for
  Income Taxes and Minority Interest......................       --         --
                                                            -------    -------
Adjusted Income before Extraordinary Items................     0.16       0.04
Extraordinary Charge from Early Extinguishment of Debt....    (0.01)        --
                                                            -------    -------
Net Income per Share--Basic...............................  $  0.15    $  0.04
                                                            =======    =======
Net Income per Share--Diluted
Net Income before Extraordinary Items, as Reported........  $  0.15    $  0.04
Add: Goodwill Amortization, Net of Change in Provision for
  Income Taxes and Minority Interest......................       --         --
                                                            -------    -------
Adjusted Income before Extraordinary Items................     0.15       0.04
Extraordinary Charge from Early Extinguishment of Debt....    (0.01)        --
                                                            -------    -------
Net Income per Share--Diluted.............................  $  0.15    $  0.04
                                                            =======    =======
</Table>

(5)  ACQUISITIONS

    During the three months ended March 31, 2002, the Company purchased
substantially all of the assets, and assumed certain liabilities, of two
businesses.

    Each of the 2002 acquisitions and all 16 of the records management
businesses acquired during 2001 were accounted for using the purchase method of
accounting and, accordingly, the results of operations for each acquisition have
been included in the consolidated results of the Company from their respective
acquisition dates. In connection with certain 2001 acquisitions, related real
estate was also purchased. For the 2002 acquisitions, the aggregate purchase
price exceeded the underlying fair

                                       9
<Page>
                           IRON MOUNTAIN INCORPORATED

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

                       (IN THOUSANDS, EXCEPT SHARE DATA)

                                  (UNAUDITED)

(5)  ACQUISITIONS (CONTINUED)
value of the net assets acquired by $4,769 which has been assigned to goodwill
and, consistent with SFAS 142, has not been amortized.

    In connection with the 2002 and 2001 acquisitions, the Company has
undertaken certain restructurings of the acquired businesses. The restructuring
activities include certain reductions in staffing levels, elimination of
duplicate facilities and other costs associated with exiting certain activities
of the acquired businesses. These restructuring activities were recorded as
costs of the acquisitions and were provided in accordance with Emerging Issues
Task Force Issue No. 95-3, "Recognition of Liabilities in Connection with a
Purchase Business Combination." The Company finalizes its restructuring plans
for each business no later than one year from the date of acquisition.
Unresolved matters primarily include completion of planned abandonments of
facilities and employee severance costs for certain 2002 and 2001 acquisitions.

    The following is a summary of reserves related to such restructuring
activities:

<Table>
<Caption>
                                                        MARCH 31,   DECEMBER 31,
                                                          2002          2001
                                                        ---------   ------------
<S>                                                     <C>         <C>
Reserves, Beginning Balance...........................   $16,225       $28,514
Reserves Established..................................       780         3,751
Expenditures..........................................    (1,435)       (7,805)
Adjustments to Goodwill, including currency effect....      (489)       (8,235)
                                                         -------       -------
Reserves, Ending Balance..............................   $15,081       $16,225
                                                         =======       =======
</Table>

    At March 31, 2002, the restructuring reserves related to acquisitions
consisted of lease losses on abandoned facilities ($9,705), severance costs for
approximately 29 people ($937) and other exit costs ($4,439). These accruals are
expected to be used prior to March 31, 2003 except for lease losses of $5,956
and severance contracts of $517, both of which are based on contracts that
extend beyond one year.

                                       10
<Page>
                           IRON MOUNTAIN INCORPORATED

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

                       (IN THOUSANDS, EXCEPT SHARE DATA)

                                  (UNAUDITED)

(6)  LONG-TERM DEBT

    Long-term debt consists of the following:

<Table>
<Caption>
                                                      MARCH 31, 2002         DECEMBER 31, 2001
                                                   ---------------------   ---------------------
                                                    CARRYING      FAIR      CARRYING      FAIR
                                                     AMOUNT      VALUE       AMOUNT      VALUE
                                                   ----------   --------   ----------   --------
<S>                                                <C>          <C>        <C>          <C>
Revolving Credit Facility........................  $  107,751   $107,751   $       --   $     --
Tranche A Term Loan..............................          --         --      150,000    150,000
Tranche B Term Loan..............................          --         --      198,750    198,750
Term Loan........................................     250,000    250,000           --         --
9 1/8% Senior Subordinated Notes due 2007 (the
  "9 1/8% notes")................................     115,328    125,100      115,106    126,000
8 1/8% Senior Notes due 2008 (the "Subsidiary
  notes")........................................     123,235    135,675      122,758    136,350
8 3/4% Senior Subordinated Notes due 2009 (the
  "8 3/4% notes")................................     249,697    260,313      249,687    257,500
8 1/4% Senior Subordinated Notes due 2011 (the
  "8 1/4% notes")................................     149,591    153,750      149,580    151,875
8 5/8% Senior Subordinated Notes due 2013 (the
  "8 5/8% notes")................................     437,991    456,750      438,059    448,050
Real estate mortgage.............................      18,937     18,937       19,337     19,337
Seller Notes.....................................      11,540     11,540       12,383     12,383
Other............................................      39,157     39,157       40,439     40,439
                                                   ----------              ----------
Long-term Debt...................................   1,503,227               1,496,099
Less Current Portion.............................     (37,415)                (35,256)
                                                   ----------              ----------
Long-term Debt, Net of Current Portion...........  $1,465,812              $1,460,843
                                                   ==========              ==========
</Table>

    The estimated fair values for the long-term debt are based on the borrowing
rates available to the Company at March 31, 2002 and December 31, 2001 for loans
with similar terms and average maturities. The fair values of the 9 1/8% notes,
8 3/4% notes, 8 1/4% notes, 8 5/8% notes (collectively, the "Parent Notes") and
the Subsidiary notes are based on the quoted market prices for those notes on
March 31, 2002 and December 31, 2001.

    On March 15, 2002, the Company entered into a new amended and restated
revolving credit agreement (the "Amended and Restated Credit Agreement"). The
Amended and Restated Credit Agreement replaced the Company's prior credit
agreement. The Amended and Restated Credit Agreement has an aggregate principal
amount of $650,000 and includes a $400,000 revolving credit facility and a
$250,000 term loan facility. The revolving credit facility matures on
January 31, 2005 while the term loan is to be paid in full on February 15, 2008;
however, if the 9 1/8% notes are not redeemed or repurchased prior to April 15,
2007 the term loan will mature on April 15, 2007. The interest rate on
borrowings under the Amended and Restated Credit Agreement varies depending on
the Company's choice of base rates and currency options, plus an applicable
margin. Restrictive covenants under this agreement are similar to those under
the Company's prior credit facility. All intercompany notes are now pledged to
secure the Amended and Restated Credit Agreement.

                                       11
<Page>
                           IRON MOUNTAIN INCORPORATED

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

                       (IN THOUSANDS, EXCEPT SHARE DATA)

                                  (UNAUDITED)

(7)  SELECTED CONSOLIDATED FINANCIAL STATEMENTS OF PARENT, GUARANTORS AND
     NON-GUARANTORS

    The following financial data summarizes the consolidating Company on the
equity method of accounting as of March 31, 2002 and December 31, 2001 and for
the first quarter of 2002 and 2001. The Guarantor column includes all
subsidiaries that guarantee the Parent notes and the Subsidiary notes. The
Canada Company column includes Iron Mountain Canada Corporation ("Canada
Company") and the Company's other Canadian subsidiaries that guarantee the
Subsidiary notes, but do not guarantee the Parent notes. The Parent and the
Guarantors also guarantee the Subsidiary notes issued by Canada Company. The
subsidiaries that do not guarantee either the Parent notes or the Subsidiary
notes are referred to in the table as the "non-guarantors."

<Table>
<Caption>
                                                                     MARCH 31, 2002
                                     ------------------------------------------------------------------------------
                                                                 CANADA       NON-
                                       PARENT      GUARANTORS   COMPANY    GUARANTORS   ELIMINATIONS   CONSOLIDATED
                                     -----------   ----------   --------   ----------   ------------   ------------
<S>                                  <C>           <C>          <C>        <C>          <C>            <C>
ASSETS
Current Assets:
  Cash and Cash Equivalents........  $        --   $    5,509   $     --    $  6,667    $      (757)    $   11,419
  Accounts Receivable..............           --      190,684     14,467      23,248             --        228,399
  Intercompany Receivable
    (Payable)......................      710,385     (568,778)   (93,329)    (48,278)            --             --
  Other Current Assets.............           --       62,346      1,492       8,332             --         72,170
                                     -----------   ----------   --------    --------    -----------     ----------
    Total Current Assets...........      710,385     (310,239)   (77,370)    (10,031)          (757)       311,988
Property, Plant and Equipment,
  Net..............................           --      797,144     74,948     111,417             --        983,509
Other Assets:
  Long-term Intercompany
    Receivable.....................       54,026           --         --          --        (54,026)            --
  Long-term Notes Receivable from
    Affiliates.....................    1,094,773           --         --          --     (1,094,773)            --
  Investment in Subsidiaries.......      368,498       78,837         --          --       (447,335)            --
  Goodwill, net....................           --    1,261,494    115,369     134,436         10,277      1,521,576
  Other............................       30,506       46,944     10,696       1,077        (14,748)        74,475
                                     -----------   ----------   --------    --------    -----------     ----------
    Total Other Assets.............    1,547,803    1,387,275    126,065     135,513     (1,600,605)     1,596,051
                                     -----------   ----------   --------    --------    -----------     ----------
    Total Assets...................  $ 2,258,188   $1,874,180   $123,643    $236,899    $(1,601,362)    $2,891,548
                                     ===========   ==========   ========    ========    ===========     ==========

LIABILITIES AND SHAREHOLDERS'
  EQUITY
  Total Current Liabilities........  $    48,224   $  232,128   $ 16,693    $ 73,371    $      (757)    $  369,659
  Long-term Debt, net of current
    portion........................    1,313,332        1,662    125,411      25,407             --      1,465,812
  Long-term Intercompany Payable...           --       54,026         --          --        (54,026)            --
  Long-term Notes Payable to
    Affiliates.....................           --    1,094,773         --          --     (1,094,773)            --
  Other Long-term Liabilities......           --      106,460        908       4,763        (14,748)        97,383
  Minority Interest................           --           --         --       1,557         60,505         62,062
  Shareholders' Equity.............      896,632      385,131    (19,369)    131,801       (497,563)       896,632
                                     -----------   ----------   --------    --------    -----------     ----------
    Total Liabilities and
      Shareholders' Equity.........  $ 2,258,188   $1,874,180   $123,643    $236,899    $(1,601,362)    $2,891,548
                                     ===========   ==========   ========    ========    ===========     ==========
</Table>

                                       12
<Page>
                           IRON MOUNTAIN INCORPORATED

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

                       (IN THOUSANDS, EXCEPT SHARE DATA)

                                  (UNAUDITED)

(7)  SELECTED CONSOLIDATED FINANCIAL STATEMENTS OF PARENT, GUARANTORS AND
     NON-GUARANTORS (CONTINUED)

<Table>
<Caption>
                                                                DECEMBER 31, 2001
                                  -----------------------------------------------------------------------------
                                                             CANADA       NON-
                                    PARENT     GUARANTORS   COMPANY    GUARANTORS   ELIMINATIONS   CONSOLIDATED
                                  ----------   ----------   --------   ----------   ------------   ------------
<S>                               <C>          <C>          <C>        <C>          <C>            <C>
ASSETS
Current Assets:
  Cash and Cash Equivalents.....  $       --   $   11,395   $  1,696    $  8,268    $        --     $   21,359
  Accounts Receivable...........          --      181,640     14,415      22,995             --        219,050
  Intercompany Receivable
    (Payable)...................     685,601     (560,699)   (92,555)    (32,347)            --             --
  Other Current Assets..........          --       64,378        460       4,094            (24)        68,908
                                  ----------   ----------   --------    --------    -----------     ----------
    Total Current Assets........     685,601     (303,286)   (75,984)      3,010            (24)       309,317
Property, Plant and Equipment,
  Net...........................          --      778,804     72,839     100,588             --        952,231
Other Assets:
  Long-term Intercompany
    Receivable..................      45,193           --         --          --        (45,193)            --
  Long-term Notes Receivable
    from Affiliates.............   1,086,823           --         --          --     (1,086,823)            --
  Investment in Subsidiaries....     379,816       82,434         --          --       (462,250)            --
  Goodwill, Net.................          --    1,261,598    115,832     141,463         10,654      1,529,547
  Other.........................      31,419       40,660     11,754       1,085        (16,107)        68,811
                                  ----------   ----------   --------    --------    -----------     ----------
    Total Other Assets..........   1,543,251    1,384,692    127,586     142,548     (1,599,719)     1,598,358
                                  ----------   ----------   --------    --------    -----------     ----------
    Total Assets................  $2,228,852   $1,860,210   $124,441    $246,146    $(1,599,743)    $2,859,906
                                  ==========   ==========   ========    ========    ===========     ==========

LIABILITIES AND SHAREHOLDERS'
  EQUITY
  Total Current Liabilities.....  $   34,526   $  233,111   $ 16,786    $ 74,610    $       (24)    $  359,009
  Long-term Debt, Net of Current
    Portion.....................   1,308,367        1,289    125,075      26,112             --      1,460,843
  Long-term Intercompany
    Payable.....................          --       45,193         --          --        (45,193)            --
  Long-term Notes Payable to
    Affiliates..................          --    1,086,823         --          --     (1,086,823)            --
  Other Long-term Liabilities...          --       98,481        887       5,541        (16,107)        88,802
  Minority Interest.............          --           --         --      (1,352)        66,645         65,293
  Shareholders' Equity..........     885,959      395,313    (18,307)    141,235       (518,241)       885,959
                                  ----------   ----------   --------    --------    -----------     ----------
    Total Liabilities and
      Shareholders' Equity......  $2,228,852   $1,860,210   $124,441    $246,146    $(1,599,743)    $2,859,906
                                  ==========   ==========   ========    ========    ===========     ==========
</Table>

                                       13
<Page>
                           IRON MOUNTAIN INCORPORATED

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

                       (IN THOUSANDS, EXCEPT SHARE DATA)

                                  (UNAUDITED)

(7)  SELECTED CONSOLIDATED FINANCIAL STATEMENTS OF PARENT, GUARANTORS AND
     NON-GUARANTORS (CONTINUED)

<Table>
<Caption>
                                                            THREE MONTHS ENDED MARCH 31, 2002
                                       ---------------------------------------------------------------------------
                                                                CANADA       NON-
                                        PARENT    GUARANTORS   COMPANY    GUARANTORS   ELIMINATIONS   CONSOLIDATED
                                       --------   ----------   --------   ----------   ------------   ------------
<S>                                    <C>        <C>          <C>        <C>          <C>            <C>
Revenues:
  Storage............................  $     --    $160,077    $ 8,519     $14,840       $     --       $183,436
  Service and Storage Material
    Sales............................        --     109,147      9,993      10,603             --        129,743
                                       --------    --------    -------     -------       --------       --------
    Total Revenues...................        --     269,224     18,512      25,443             --        313,179
Operating Expenses:
  Cost of Sales (excluding
    depreciation)....................        --     125,862      9,356      13,209             --        148,427
  Selling, General and
    Administrative...................        12      72,090      2,904       7,016             --         82,022
  Depreciation and Amortization......        --      22,068      1,438       1,568             --         25,074
  Merger-related Expenses............        --         300         --          --             --            300
                                       --------    --------    -------     -------       --------       --------
    Total Operating Expenses.........        12     220,320     13,698      21,793             --        255,823
                                       --------    --------    -------     -------       --------       --------
Operating Income (Loss)..............       (12)     48,904      4,814       3,650             --         57,356
Interest Expense, Net................     2,965      24,908      3,297       1,710             --         32,880
Equity in the Earnings of
  Subsidiaries.......................   (15,787)       (766)        --          --         16,553             --
Other Income (Expense), Net..........       485        (717)      (481)        451             --           (262)
                                       --------    --------    -------     -------       --------       --------
  Income Before Provision for Income
    Taxes and Minority Interest......    13,295      24,045      1,036       2,391        (16,553)        24,214
Provision for Income Taxes...........        --       8,605        691         666             --          9,962
Minority Interest in Earnings of
  Subsidiaries.......................        --          --         --         957             --            957
                                       --------    --------    -------     -------       --------       --------
  Income before Extraordinary Item...    13,295      15,440        345         768        (16,553)        13,295
Extraordinary Charge from Early
  Extinguishment of Debt (net of tax
  benefit of $445)...................      (777)         --         --          --             --           (777)
                                       --------    --------    -------     -------       --------       --------
    Net Income.......................  $ 12,518    $ 15,440    $   345     $   768       $(16,553)      $ 12,518
                                       ========    ========    =======     =======       ========       ========
</Table>

                                       14
<Page>
                           IRON MOUNTAIN INCORPORATED

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

                       (IN THOUSANDS, EXCEPT SHARE DATA)

                                  (UNAUDITED)

(7)  SELECTED CONSOLIDATED FINANCIAL STATEMENTS OF PARENT, GUARANTORS AND
     NON-GUARANTORS (CONTINUED)

<Table>
<Caption>
                                                            THREE MONTHS ENDED MARCH 31, 2001
                                       ---------------------------------------------------------------------------
                                                                CANADA       NON-
                                        PARENT    GUARANTORS   COMPANY    GUARANTORS   ELIMINATIONS   CONSOLIDATED
                                       --------   ----------   --------   ----------   ------------   ------------
<S>                                    <C>        <C>          <C>        <C>          <C>            <C>
Revenues:
  Storage............................  $     --    $146,575    $ 8,402     $12,888       $     --       $167,865
  Service and Storage Material
    Sales............................        --      99,988      8,267       7,802             --        116,057
                                       --------    --------    -------     -------       --------       --------
    Total Revenues...................        --     246,563     16,669      20,690             --        283,922
Operating Expenses:
  Cost of Sales (excluding
    depreciation)....................        --     119,490      8,737      11,593             --        139,820
  Selling, General and
    Administrative...................        75      62,273      2,751       5,218             --         70,317
  Depreciation and Amortization......        --      30,488      2,484       2,746             --         35,718
  Merger-related Expenses............        --         772         --          29             --            801
                                       --------    --------    -------     -------       --------       --------
    Total Operating Expenses.........        75     213,023     13,972      19,586             --        246,656
                                       --------    --------    -------     -------       --------       --------
Operating Income (Loss)..............       (75)     33,540      2,697       1,104             --         37,266
Interest Expense, Net................    13,170      14,881      4,050       1,886             --         33,987
Equity in the (Earnings) Losses of
  Subsidiaries.......................   (16,444)         85         --          --         16,359             --
Other Expense, Net...................        --      (2,892)    (6,294)         (1)            --         (9,187)
                                       --------    --------    -------     -------       --------       --------
  Income (Loss) Before Provision
    (Benefit) for Income Taxes and
    Minority Interest................     3,199      15,682     (7,647)       (783)       (16,359)        (5,908)
Provision (Benefit) for Income
  Taxes..............................        --      (9,100)       617        (354)            --         (8,837)
Minority Interest in Losses of
  Subsidiaries.......................        --          --         --        (270)            --           (270)
                                       --------    --------    -------     -------       --------       --------
    Net Income (Loss)................  $  3,199    $ 24,782    $(8,264)    $  (159)      $(16,359)      $  3,199
                                       ========    ========    =======     =======       ========       ========
</Table>

                                       15
<Page>
                           IRON MOUNTAIN INCORPORATED

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

                       (IN THOUSANDS, EXCEPT SHARE DATA)

                                  (UNAUDITED)

(7)  SELECTED CONSOLIDATED FINANCIAL STATEMENTS OF PARENT, GUARANTORS AND
     NON-GUARANTORS (CONTINUED)

<Table>
<Caption>
                                                            THREE MONTHS ENDED MARCH 31, 2002
                                       ---------------------------------------------------------------------------
                                                                CANADA       NON-
                                        PARENT    GUARANTORS   COMPANY    GUARANTORS   ELIMINATIONS   CONSOLIDATED
                                       --------   ----------   --------   ----------   ------------   ------------
<S>                                    <C>        <C>          <C>        <C>          <C>            <C>
Cash Flows from Operating Activities:
  Cash Flows Provided by (Used in)
    Operating Activities.............  $ (9,179)   $ 57,744    $ 2,281     $  1,180      $   (757)      $ 51,269
Cash Flows from Investing Activities:
  Capital expenditures...............        --     (37,887)    (3,382)     (16,374)           --        (57,643)
  Cash paid for acquisitions, net of
    cash acquired....................        --      (7,819)        --           63            --         (7,756)
  Intercompany loans to
    subsidiaries.....................       451     (16,864)        --           --        16,413             --
  Investment in subsidiaries.........        (2)         (2)        --           --             4             --
  Additions to customer acquisition
    costs............................        --      (1,486)       (26)        (110)           --         (1,622)
  Proceeds from sales of property and
    equipment........................        --         224          3           --            --            227
                                       --------    --------    -------     --------      --------       --------
    Cash Flows Provided by (Used in)
      Investing Activities...........       449     (63,834)    (3,405)     (16,421)       16,417        (66,794)
Cash Flows from Financing Activities:
  Net repayment of term loans........   (98,750)         --         --           --            --        (98,750)
  Repayment of debt..................   (26,188)       (119)      (127)      (1,113)           --        (27,547)
  Proceeds from borrowings...........   134,235          --         --           88            --        134,323
  Debt repayment to and equity
    distributions to minority
    shareholders.....................        --          --         --       (2,165)           --         (2,165)
  Intercompany loans from parent.....        --         321       (772)      16,864       (16,413)            --
  Equity contribution from parent....        --           2         --            2            (4)            --
  Proceeds from exercise of stock
    options..........................     1,388          --         --           --            --          1,388
  Debt financing and stock issuance
    costs............................    (1,955)         --         --           --            --         (1,955)
                                       --------    --------    -------     --------      --------       --------
    Cash Flows Provided by (Used in)
      Financing Activities...........     8,730         204       (899)      13,676       (16,417)         5,294
Effect of exchange rates on cash and
  cash equivalents...................        --          --        327          (36)           --            291
Decrease in cash and cash
  equivalents........................        --      (5,886)    (1,696)      (1,601)         (757)        (9,940)
Cash and cash equivalents, beginning
  of period..........................        --      11,395      1,696        8,268            --         21,359
                                       --------    --------    -------     --------      --------       --------
Cash and cash equivalents, end of
  period.............................  $     --    $  5,509    $    --     $  6,667      $   (757)      $ 11,419
                                       ========    ========    =======     ========      ========       ========
</Table>

                                       16
<Page>
                           IRON MOUNTAIN INCORPORATED

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

                       (IN THOUSANDS, EXCEPT SHARE DATA)

                                  (UNAUDITED)

(7)  SELECTED CONSOLIDATED FINANCIAL STATEMENTS OF PARENT, GUARANTORS AND
     NON-GUARANTORS (CONTINUED)

<Table>
<Caption>
                                                            THREE MONTHS ENDED MARCH 31, 2001
                                       ---------------------------------------------------------------------------
                                                                CANADA       NON-
                                        PARENT    GUARANTORS   COMPANY    GUARANTORS   ELIMINATIONS   CONSOLIDATED
                                       --------   ----------   --------   ----------   ------------   ------------
<S>                                    <C>        <C>          <C>        <C>          <C>            <C>
Cash Flows from Operating Activities:
  Cash Flows Provided by (Used in)
    Operating Activities.............  $(21,070)   $ 45,009    $ 1,642     $ (1,682)     $     --       $ 23,899
Cash Flows from Investing Activities:
  Capital expenditures...............        --     (42,528)    (1,592)      (4,078)           --        (48,198)
  Cash paid for acquisitions, net of
    cash acquired....................        --     (19,813)       206      (15,166)           --        (34,773)
  Intercompany loans to
    subsidiaries.....................   (20,204)      2,537         --           --        17,667             --
  Investment in subsidiaries.........    (6,523)     (6,523)        --           --        13,046             --
  Additions to customer acquisition
    costs............................        --      (2,051)       (75)        (181)           --         (2,307)
  Proceeds from sales of property and
    equipment........................        --           8          5           16            --             29
                                       --------    --------    -------     --------      --------       --------
    Cash Flows Used in Investing
      Activities.....................   (26,727)    (68,370)    (1,456)     (19,409)       30,713        (85,249)
Cash Flows from Financing Activities:
  Repayment of debt..................      (883)    (34,043)       (60)        (748)           --        (35,734)
  Proceeds from borrowings...........    46,116      35,686         --          553            --         82,355
  Debt repayment to minority
    shareholders.....................        --          --         --       (6,560)           --         (6,560)
  Equity contributions from minority
    shareholders.....................        --          --         --       24,529            --         24,529
  Intercompany loans from parent.....        --      14,791      4,937       (2,061)      (17,667)            --
  Equity contribution from parent....        --       6,523         --        6,523       (13,046)            --
  Proceeds from exercise of stock
    options..........................     2,539          --         --           --            --          2,539
  Debt financing and stock issuance
    costs............................      (166)        (69)        --           --            --           (235)
                                       --------    --------    -------     --------      --------       --------
    Cash Flows Provided by Financing
      Activities.....................    47,606      22,888      4,877       22,236       (30,713)        66,894
Effect of exchange rates on cash and
  cash equivalents...................        --          --     (4,044)       2,203            --         (1,841)
Increase (Decrease) in cash and cash
  equivalents........................      (191)       (473)     1,019        3,348            --          3,703
Cash and cash equivalents, beginning
  of period..........................       191       3,336        302        2,371            --          6,200
                                       --------    --------    -------     --------      --------       --------
Cash and cash equivalents, end of
  period.............................  $     --    $  2,863    $ 1,321     $  5,719      $     --       $  9,903
                                       ========    ========    =======     ========      ========       ========
</Table>

                                       17
<Page>
                           IRON MOUNTAIN INCORPORATED

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

                       (IN THOUSANDS, EXCEPT SHARE DATA)

                                  (UNAUDITED)

(8)  EARNINGS PER SHARE

    In accordance with SFAS No. 128, "Earnings per Share," basic net income
(loss) per common share is calculated by dividing net income (loss) by the
weighted average number of common shares outstanding. The calculation of diluted
net income (loss) per share is consistent with that of basic net income (loss)
per share but gives effect to all potential common shares (that is, securities
such as options, warrants or convertible securities) that were outstanding
during the period, unless the effect is antidilutive.

(9)  SEGMENT INFORMATION

    An analysis of the Company's business segment information to the respective
information in the consolidated financial statements is as follows:

<Table>
<Caption>
                                        BUSINESS     OFF-SITE
                                        RECORDS        DATA                      CORPORATE       TOTAL
                                       MANAGEMENT   PROTECTION   INTERNATIONAL   & OTHER(1)   CONSOLIDATED
                                       ----------   ----------   -------------   ----------   ------------
<S>                                    <C>          <C>          <C>             <C>          <C>
THREE MONTHS ENDED MARCH 31, 2002
Revenue..............................  $ 202,544     $ 52,180      $ 43,488      $  14,967     $  313,179
Adjusted EBITDA......................     54,169       14,128        10,965          3,468         82,730
Total Assets.........................  2,114,032      349,617       531,893       (103,994)     2,891,548

THREE MONTHS ENDED MARCH 31, 2001
Revenue..............................    189,299       44,916        36,879         12,828        283,922
Adjusted EBITDA......................     50,146       10,811         8,679          4,149         73,785
</Table>

------------------------

(1) Total assets include the intersegment elimination amount of $1,618,775.

    Adjusted EBITDA is defined as EBITDA (earnings before interest, taxes,
depreciation and amortization) adjusted for extraordinary items, other income
(expense), merger-related expenses, stock option compensation expense and
minority interest. The Company uses Adjusted EBITDA as an internal measurement
of financial performance of, and as the basis for allocating resources to, the
Company's operating segments.

    The Company has several hybrid business units, each generating revenues and
incurring expenses from a combination of different product lines such as
business records management, off-site data protection and confidential
destruction. As the different pieces of these operations migrate to their proper
division, the related revenues and expenses are reported under the new segment.
To the extent practicable, the prior period amounts shown above have been
adjusted to reflect these changes.

                                       18
<Page>
                           IRON MOUNTAIN INCORPORATED

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

                       (IN THOUSANDS, EXCEPT SHARE DATA)

                                  (UNAUDITED)

(9)  SEGMENT INFORMATION (CONTINUED)
    A reconciliation from EBITDA to Adjusted EBITDA and income (loss) before
provision (benefit) for income taxes and minority interest is as follows:

<Table>
<Caption>
                                                              THREE MONTHS ENDED
                                                                   MARCH 31,
                                                              -------------------
                                                                2002       2001
                                                              --------   --------
<S>                                                           <C>        <C>
EBITDA......................................................  $ 81,211   $ 64,067
  Other Expense, Net........................................       262      9,187
  Merger-related Expenses...................................       300        801
  Minority Interests in Earnings (Losses) of Subsidiaries...       957       (270)
                                                              --------   --------
ADJUSTED EBITDA.............................................    82,730     73,785
  Depreciation and Amortization.............................   (25,074)   (35,718)
  Merger-related Expenses...................................      (300)      (801)
  Interest Expense..........................................   (32,880)   (33,987)
  Other Expense, Net........................................      (262)    (9,187)
                                                              --------   --------
INCOME (LOSS) BEFORE PROVISION FOR INCOME TAXES AND MINORITY
  INTEREST..................................................  $ 24,214   $ (5,908)
                                                              ========   ========
</Table>

    Information about the Company's operations in different geographical areas
is as follows:

<Table>
<Caption>
                                                              THREE MONTHS ENDED
                                                                   MARCH 31,
                                                              -------------------
                                                                2002       2001
                                                              --------   --------
<S>                                                           <C>        <C>
Revenues:
United States...............................................  $269,691   $247,043
International...............................................    43,488     36,879
                                                              --------   --------
    Total Revenues..........................................  $313,179   $283,922
                                                              ========   ========
</Table>

<Table>
<Caption>
                                                              MARCH 31,    DECEMBER 31,
                                                                 2002          2001
                                                              ----------   ------------
<S>                                                           <C>          <C>
Long-lived Assets:
United States...............................................  $2,143,776    $2,118,828
International...............................................     435,784       431,761
                                                              ----------    ----------
  Total Long-lived Assets...................................  $2,579,560    $2,550,589
                                                              ==========    ==========
</Table>

                                       19
<Page>
                           IRON MOUNTAIN INCORPORATED

ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
  OF OPERATIONS

    The following discussion and analysis of our financial condition and results
of operations for the three months ended March 31, 2002 and 2001 should be read
in conjunction with the consolidated financial statements and footnotes for the
three months ended March 31, 2002 included herein, and the year ended
December 31, 2001, included in our Annual Report on Form 10-K filed with the
Securities and Exchange Commission on March 20, 2002.

OVERVIEW

    Our consolidated revenues increased $29.3 million, or 10.3%, to
$313.2 million for the first quarter of 2002 from $283.9 million for the first
quarter of 2001. Internal revenue growth for the first quarter of 2002 was 8.8%,
comprised of 8.4% for storage revenue and 9.3% for service revenue. We calculate
internal revenue growth in local currency for our international operations.

RESULTS OF OPERATIONS

THREE MONTHS ENDED MARCH 31, 2002 COMPARED TO THREE MONTHS ENDED MARCH 31, 2001

    Consolidated storage revenues increased $15.6 million, or 9.3%, to
$183.4 million for the first three months of 2002 from $167.9 million for the
first three months of 2001. The increase was primarily attributable to:
(1) internal revenue growth of 8.4% resulting primarily from net increases in
records and other media stored by existing customers and sales to new customers;
and (2) acquisitions. The total increase in storage revenues was partially
offset by the unfavorable effects of foreign currency translation of
$1.2 million as a result of the strengthening of the U.S. dollar against certain
currencies, primarily the Canadian dollar, the Argentine peso and the British
pound sterling.

    Consolidated service and storage material sales revenues increased
$13.7 million, or 11.8%, to $129.7 million for the first three months of 2002
from $116.1 million for the first three months of 2001. The increase was
primarily attributable to: (1) internal revenue growth of 9.3% resulting
primarily from net increases in service and storage material sales to existing
customers and sales to new customers; and (2) acquisitions. The total increase
in service and storage material sales revenues was partially offset by the
unfavorable effects of foreign currency translation of $0.6 million as a result
of the strengthening of the U.S. dollar against certain currencies, primarily
the Canadian dollar, the Argentinean peso and the British pound sterling.

    Consolidated cost of sales (excluding depreciation) increased $8.6 million,
or 6.2%, to $148.4 million (47.4% of consolidated revenues) for the first three
months of 2002 from $139.8 million (49.2% of consolidated revenues) for the
first three months of 2001. The dollar increase was primarily attributable to
the required costs to support our revenue growth. The decrease as a percent of
consolidated revenues is primarily attributable to: (1) improved labor
management (a decrease of 0.8%); (2) improved transportation efficiencies (a
decrease of 0.5%); and (3) improved management of facilities costs including
rent (a decrease of 0.2%) and decreased utility costs in comparison to high
levels in 2001 (a decrease of 0.6%) offset by increased insurance expense due to
increased premiums for property and casualty insurance (an increase of 0.3%).
Improvements in labor and facilities management as well as increased
transportation efficiencies are the result of the increasing scale of our
business and efficiencies gained through our merger integration with Pierce
Leahy Corp.

    Consolidated selling, general and administrative expenses increased
$11.7 million, or 16.6%, to $82.0 million (26.2% of consolidated revenues) for
the first three months of 2002 from $70.3 million (24.8% of consolidated
revenues) for the first three months of 2001. The dollar increase was primarily

                                       20
<Page>
                           IRON MOUNTAIN INCORPORATED

attributable to the required costs to support our revenue growth, while the
increase as a percent of consolidated revenues was primarily attributable to:
(1) our expenditures for our marketing and information technology initiatives
related to the development of complementary technology-based service offerings
(an increase of 0.3%); (2) increased information technology costs primarily as a
result of higher data communications costs resulting from network deployment and
migration activities (an increase of 0.6%); (3) increased investment in sales
force (an increase of 0.4%); and (4) an increase in the provision for doubtful
accounts (an increase of 0.4%) offset by improved labor absorption (a decrease
of 0.3%).

    Consolidated depreciation and amortization expense decreased $10.6 million,
or 29.8%, to $25.1 million (8.0% of consolidated revenues) for the first three
months of 2002 from $35.7 million (12.6% of consolidated revenues) for the first
three months of 2001. Depreciation expense increased $4.1 million, primarily due
to the additional depreciation expense related to the 2001 and 2002
acquisitions, and capital expenditures including storage systems, information
systems and expansion of storage capacity in existing facilities. Amortization
expense decreased $14.7 million, primarily due to eliminating amortization
expense related to the goodwill in accordance with SFAS 142 (See Note 4,
Goodwill and Other Intangible Assets, of Notes to Consolidated Financial
Statements).

    Merger-related expenses are certain expenses directly related to our merger
with Pierce Leahy that cannot be capitalized and include system conversion
costs, costs of exiting certain facilities, severance, relocation and
pay-to-stay payments and other transaction-related costs. Merger-related
expenses were $0.3 million (0.1% of consolidated revenues) for the first three
months of 2002 compared to $0.8 million (0.3% of consolidated revenues) for the
same period of 2001.

    As a result of the foregoing factors, consolidated operating income
increased $20.1 million, or 53.9%, to $57.4 million (18.3% of consolidated
revenues) for the first three months of 2002 from $37.3 million (13.1% of
consolidated revenues) for the first three months of 2001.

    Consolidated interest expense decreased $1.1 million, or 3.3%, to
$32.9 million for the first three months of 2002 from $34.0 million for the
first three months of 2001. The decrease was primarily attributable to a decline
in the weighted average interest rate on our variable rate debt resulting in
reduced interest expense of $2.6 million. This decrease was partially offset by:
(1) increased interest expense of $1.0 million resulting from issuance of
$435.0 million of our 8 5/8% notes, which were issued in April and
September 2001 and were used to extinguish $295.0 million of our 11 1/8% and
10 1/8% senior subordinated notes; and (2) increased deferred financing
amortization expense of $0.7 million associated with the issuance of our 8 5/8%
notes.

    Consolidated other expense was $0.3 million for the first three months of
2002 compared to $9.2 million for the first three months of 2001. The change was
primarily attributable to a non-cash foreign currency loss of $9.2 million
recorded in the first three months of 2001, primarily due to the effect of
further weakening of the Canadian dollar against the U.S. dollar from the
previous year end, as it relates to Canada Corporation's 8 1/8% notes, and the
intercompany balances with our Canadian and European subsidiaries.

    As a result of the foregoing factors, consolidated income (loss) before
provision for income taxes and minority interests increased $30.1 million to
income of $24.2 million (7.7% of consolidated revenues) for the first three
months of 2002 from a loss of $5.9 million (2.1% of consolidated revenues) for
the first three months of 2001. The provision for income taxes was
$10.0 million for the first three months of 2002 compared to a benefit of
$8.8 million for the first three months of 2001.

    Minority interest in earnings (losses) of subsidiaries increased
$1.2 million to $1.0 million (0.3% of consolidated revenue) for the first three
months of 2002 from a loss of $0.3 million (0.1% of

                                       21
<Page>
                           IRON MOUNTAIN INCORPORATED

consolidated revenues) for the first three months of 2001. This represents our
minority partners' share of earnings in our majority owned international
subsidiaries that are consolidated in operating results. The increase is a
result of the elimination of goodwill amortization expense in accordance with
SFAS 142 and increased profitability in our emerging businesses in Europe and
South America in 2002.

    Consolidated income before extraordinary item increased $10.1 million to
$13.3 million (4.2% of consolidated revenues) for the first three months of 2002
from $3.2 million (1.1% of consolidated revenue) for the first three months of
2001. In the first quarter of 2002, we recorded an extraordinary charge of
$0.8 million (net of tax benefit of $0.4 million) related to the early
retirement of debt in conjunction with the refinancing of our credit facility.
The charges primarily represented the write-off of unamortized deferred
financing costs associated with the extinguished debt. There was no such charge
in the same period of 2001.

    As noted in Note 9, Segment Information, of Notes to Consolidated Financial
Statements, Adjusted EBITDA, defined as EBITDA (earnings before interest, taxes,
depreciation and amortization) adjusted for extraordinary items, other income
(expense), merger-related expenses, stock option compensation expense and
minority interest, is used as our internal measurement of financial performance
of our operating segments. In addition, substantially all of our financing
agreements contain covenants in which Adjusted EBITDA-based calculations are
used as a measure of financial performance for financial ratio purposes.

    As a result of the foregoing factors, consolidated Adjusted EBITDA increased
$8.9 million, or 12.1%, to $82.7 million (26.4% of consolidated revenues) for
the first three months of 2002 from $73.8 million (26.0% of consolidated
revenues) for the first three months of 2001. Excluding the $1.8 million of
expenses for the first quarter of 2002 (0.6% of consolidated revenues) and
$0.9 million of expenses for the first quarter of 2001 (0.3% of consolidated
revenues) related to the development of our new technology-related service
offerings, our Adjusted EBITDA margin was 27.0% and 26.3% for the first quarter
of 2002 and 2001, respectively.

    Adjusted EBITDA as a percent of segment revenue for our business records
management segment increased from 26.5% to 26.7%, primarily due to an increase
in gross margin as a result of labor and transportation efficiencies as a result
of the increasing scale of our business, efficiencies gained through the
integration of Pierce Leahy and lower cost of sales associated with facility
management, including utilities. This increase was partially offset by: (1) an
increase in cost of sales from higher insurance premiums for property, casualty
and healthcare insurance; and (2) increased overhead expenses from information
technology spending including higher data communications costs resulting from
network deployment and migration activities.

    Adjusted EBITDA as a percent of segment revenue for our off-site data
protection segment increased from 24.1% to 27.1% primarily due to an increase in
gross margin as a result of improved labor, transportation and real estate
management. This increase was partially offset by: (1) higher insurance premiums
for property, casualty and healthcare insurance; and (2) an increase in the
provision for doubtful accounts.

    The Adjusted EBITDA margin for our international segment increased from
23.5% to 25.2% primarily due to: (1) facilities management improvements and
efficiency gains from the economies of scale achieved through the integration of
the December 2000 acquisition of FACS Record Centre Inc., a Canadian company;
and (2) improved margins from our European operations. This increase was
partially offset by higher insurance premiums for property, casualty and
healthcare insurance and reduced margins in our South American operations due to
the deteriorating economic conditions in Argentina.

                                       22
<Page>
                           IRON MOUNTAIN INCORPORATED

LIQUIDITY AND CAPITAL RESOURCES

    On March 15, 2002, we entered into the Amended and Restated Credit
Agreement. The Amended and Restated Credit Agreement replaced our prior credit
agreement. The Amended and Restated Credit Agreement has an aggregate principal
amount of $650.0 million and includes a $400.0 million revolving credit facility
and a $250.0 million term loan facility. The revolving credit facility matures
on January 31, 2005 while the term loan is to be paid in full on February 15,
2008; however, if our 9 1/8% notes are not redeemed or repurchased prior to
April 15, 2007 the term loan will mature on April 15, 2007. The interest rate on
borrowings under the Amended and Restated Credit Agreement varies depending on
our choice of base rates and currency options, plus an applicable margin. The
margin applicable to the term loan under the Amended and Restated Credit
Agreement is lower than the margin applicable to term loans under our prior
credit agreement and will result in reduced interest expense on our borrowings
as compared to the previous credit agreement. Restrictive covenants under this
agreement are similar to those under our prior credit facility. All intercompany
notes are now pledged to secure the Amended and Restated Credit Agreement.

    In addition, as of March 31, 2002, our synthetic leasing program had a total
capacity of $204.3 of which $165.0 million had been utilized for property
acquisitions and $39.3 million is currently available for future property
acquisitions.

    We have made significant capital investments, including: (1) capital
expenditures, primarily related to growth, including investments in real estate,
racking systems, information systems and expansion of storage capacity in
existing facilities; (2) acquisitions; and (3) customer acquisition costs. Cash
paid for these investments during the first three months of 2002 amounted to
$57.6 million, $7.8 million and $1.6 million, respectively. These investments
have been funded primarily through cash flows from operations and borrowings
under our revolving credit facilities. Included in capital expenditures is
$3.8 million related to our technology-based service offerings.

    Net cash provided by operations was $51.3 million for the first three months
of 2002 compared to $23.9 million for the same period in 2001. The increase
resulted primarily from an increase in operating income, accounts payable,
accrued expenses, deferred income taxes, and a decrease in prepaid expenses,
which was partially offset by an increase in accounts receivable.

    Net cash provided by financing activities was $5.3 million for the first
three months of 2002, consisting primarily of the proceeds from borrowings under
our credit facility of $134.2 million, which was partially offset by repayment
of debt of $126.3 million.

RECENT PRONOUNCEMENT

    Effective January 1, 2002, the Company adopted the provisions of SFAS
No. 141, "Business Combinations" and SFAS No. 142, "Goodwill and Other
Intangible Assets." SFAS No. 141 requires all business combinations initiated
after June 30, 2001 to be accounted for using the purchase method. Under SFAS
No. 142, goodwill and intangible assets with indefinite lives are no longer
amortized but are reviewed annually for impairment or more frequently if
impairment indicators arise. Separable intangible assets that are not deemed to
have indefinite lives will continue to be amortized over their useful lives. The
adoption of SFAS No. 142 has the impact of reducing our amortization of goodwill
and intangibles from $16,068 for the first quarter of 2001 to $1,339 for the
same period of 2002.

    Based on the Company's initial impairment evaluation, a reporting unit in
the Company's international operating segment did not pass the initial SFAS 142
valuation test. The Company is currently performing the second level of testing
as required by SFAS 142 to determine the amount of the adjustment to reduce the
carrying value of that reporting unit's goodwill to its implied fair value.

                                       23
<Page>
                           IRON MOUNTAIN INCORPORATED

The total carrying value of goodwill subject to the second level of testing does
not exceed $6,927 after adjusting for minority interests. The affected operating
unit failed the initial SFAS 142 valuation test due to a reduction in the
expected future performance of that unit resulting from a deterioration of the
local economic environment. Under SFAS 142, the impairment adjustment recognized
upon adoption of the new rules will be reflected as a cumulative effect of
accounting change in the Company's financial results as of January 1, 2002 and
reported in the Company's financial results for the period ending June 30, 2002.
Impairment adjustments recognized after adoption, if any, are generally required
to be recognized as operating expenses.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

    In December 2000 and January 2001, we entered into certain derivative
financial contracts, which are variable-for-fixed swaps of interest payments
payable on an aggregate principal amount of $195.5 million of our term loan and
certain variable operating lease commitments.

    Our investments in Iron Mountain Europe Limited, Iron Mountain South
America, Ltd. and other international investments may be subject to risks and
uncertainties relating to fluctuations in currency valuation. One of our
Canadian subsidiaries, Iron Mountain Canada Corporation, has U.S. dollar
denominated debt. Gains and losses due to exchange rate fluctuations related to
this debt are recognized in our consolidated statements of operations.

    After consideration of the swap contracts mentioned above, as of March 31,
2002, we had $189.4 million of variable rate debt outstanding with a weighted
average variable interest rate of 5.35%, and $1,313.8 million of fixed rate debt
outstanding. If the weighted average variable interest rate on our variable rate
debt had increased by 1%, such increase would have had a negative impact on our
net income for the quarter ended March 31, 2002 of $0.3 million. See Note 6 of
Notes to Consolidated Financial Statements for a discussion of our long-term
indebtedness, including the fair values of such indebtedness as of March 31,
2002.

                                       24
<Page>
PART II. OTHER INFORMATION

ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K

(a) EXHIBITS

<Table>
<Caption>
EXHIBIT NO.                                     DESCRIPTION
-----------             ------------------------------------------------------------
<S>                     <C>
  10.1                  Amendment No. 1 and Consent to Lease Agreement, dated March
                        15, 2002, between Iron Mountain Statutory Trust--1998 and
                        IMRM.

  10.2                  Amendment No. 5 and Consent to Unconditional Guaranty, dated
                        as of March 15, 2002 between the Company and Iron Mountain
                        Statutory Trust--1998, and consented to by the lenders
                        listed therein and the Bank of Nova Scotia, as Agent Bank
                        for such lenders.

  10.3                  Amendment No. 1 and Consent to Lease Agreement, dated March
                        15, 2002, between Iron Mountain Statutory Trust--1999 and
                        Iron Mountain Information Management, Inc.

  10.4                  Amendment No. 4 to Unconditional Guaranty, dated as of March
                        20, 2001 between the Company and Iron Mountain Statutory
                        Trust--1999, and consented to by the lenders listed therein
                        and Wachovia Capital Investments, Inc., as Agent Bank for
                        such lenders.

  10.5                  Amendment No. 5 and Unconditional Consent to Guaranty, dated
                        as of March 15, 2002 between the Company and Iron Mountain
                        Statutory Trust--1999, and consented to by the lenders
                        listed therein and Wachovia Capital Investments, Inc., as
                        Agent Bank for such lenders.

  10.6                  Amendment to Master Lease and Security Agreement and
                        Unconditional Guaranty, dated March 15, 2002, between Iron
                        Mountain Statutory Trust--2001, Iron Mountain Information
                        Management, Inc. and the Company.
</Table>

(b) REPORTS ON FORM 8-K

       None.

                                       25
<Page>
                           IRON MOUNTAIN INCORPORATED

    Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.

<Table>
<S>                                                    <C>  <C>
                                                       IRON MOUNTAIN INCORPORATED

May 15, 2002                                           By:               /s/ JEAN A. BUA
-------------------------------------------                 -----------------------------------------
(date)                                                                     Jean A. Bua
                                                             VICE PRESIDENT AND CORPORATE CONTROLLER
                                                                  (PRINCIPAL ACCOUNTING OFFICER)
</Table>

                                       26

</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-10.1
<SEQUENCE>3
<FILENAME>a2079805zex-10_1.txt
<DESCRIPTION>EXHIBIT 10.1
<TEXT>
<PAGE>

                                                                EXHIBIT 10.1

                 AMENDMENT NO. 1 AND CONSENT TO LEASE AGREEMENT

     AMENDMENT NO. 1 AND CONSENT TO LEASE AGREEMENT dated as of March 15, 2002
between IRON MOUNTAIN INFORMATION MANAGEMENT, INC. (f/k/a "Iron Mountain Records
Management, Inc."), a Delaware corporation ("LESSEE") and IRON MOUNTAIN
STATUTORY TRUST - 1998, a Connecticut statutory trust ("OWNER"), and consented
to by each of the Agent Bank and the LC Issuer listed on the signature pages
hereto.

     Lessee and Owner are parties to a certain Lease Agreement between Owner and
Lessee dated as of October 1, 1998 (as amended and supplemented from time to
time, the "LEASE"). The Lease has been assigned to the Agent Bank pursuant to an
Assignment of Lease and Agency Agreement from Owner to Agent Bank and consented
to by Lessee dated as of October 1, 1998. Lessee has requested that Owner amend
the Lease with respect to certain defaults and related definitions, and Lessee
has requested that the Agent Bank and the LC Issuer consent to such changes.
Accordingly, the parties hereto agree as follows:

     Section 1. DEFINITIONS. Except as otherwise defined in this Agreement,
terms defined in Appendix 1 to the Lease are used herein as defined
therein.

     Section 2. AMENDMENTS. Subject to the terms and conditions contained
herein, the Lease is hereby amended as follows:

     A. SECTION 22 (CONDITIONAL LIMITATIONS - EVENTS OF DEFAULTS AND REMEDIES).
Section 22(a) of the Lease is hereby by amended by deleting in its entirety
clause (xi) thereof and replacing it as follows:

        "(xi) (i) one or more judgments, orders, decrees or arbitration awards
requiring Lessee or Guarantor to pay an aggregate amount of $5,000,000 or more
(exclusive of amounts covered by insurance issued by an insurer not an Affiliate
of the Guarantor) shall be rendered against Lessee or Guarantor in connection
with any single or related series of transactions, incidents or circumstances
and the same shall not be satisfied, vacated or stayed for a period of sixty
(60) consecutive days; or (ii) any judgment, writ, assessment, warrant of
attachment, tax lien or execution or similar process shall be issued or levied
against a substantial part of the property of the Lessee or Guarantor and the
same shall not be released, stayed, vacated, or otherwise dismissed within sixty
(60) days after issue or levy; or"

     B. APPENDIX I - DEFINITIONS. The defined term "CREDIT AGREEMENT" set forth
in Appendix I to the Lease is hereby amended and restated as follows:

        "CREDIT AGREEMENT shall mean the Fifth Amended and Restated Credit
Agreement dated as of March 15, 2002 among Guarantor and the other parties
thereto as amended, amended and restated, modified, extended, refinanced or
supplemented from time to time, except to the extent that the Operative
Documents refer to it as in effect on the date hereof."

<PAGE>

     Section 3. CONDITIONS OF EFFECTIVENESS. This Agreement shall become
effective as of the date hereof when, and only when, the Owner, the Agent Bank
and the LC Issuer shall have received a counterpart of this Agreement duly
executed by the parties hereto.

     Section 4. REPRESENTATIONS AND WARRANTIES. As of the date hereof, Lessee
hereby represents and warrants to Owner, the LC Issuer, the Agent Bank, the
Lenders and their respective counsel that:

     A. the representations and warranties made by Lessee in each Operative
Document to which it is a party are true and correct in all material respects on
and as of the date hereof, as though made on and as of such date (or, if any
such representation or warranty is expressly stated to have been made as of a
specific date, as of such specific date); and

     B. no event has occurred and is continuing under any Operative Document
that constitutes a Default or an Event of Default.

     Section 5. MISCELLANEOUS. Except as herein provided, the Lease and each of
the other Operative Documents shall remain unchanged and in full force and
effect. Upon the effectiveness of this Agreement, on and after the date hereof,
each reference in any Operative Document to the Lease shall mean and be a
reference to the Lease as amended hereby. This Agreement may be executed in any
number of counterparts, all of which taken together shall constitute one and the
same instrument and any of the parties hereto may execute this Agreement by
signing any such counterpart. This Agreement shall be governed by, and construed
in accordance with, the law of the Commonwealth of Massachusetts.

                 [REMAINDER OF PAGE BLANK/SIGNATURES TO FOLLOW]





                                      -2-
<Page>

         IN WITNESS WHEREOF, the parties hereunto have caused this Agreement to
be executed by their respective officers thereunto duly authorized, as of the
date first above written.

                                            LESSEE:

                                            IRON MOUNTAIN INFORMATION
                                            MANAGEMENT, INC.

                                            By: /s/ J.P. Lawrence
                                               --------------------------------
                                            Name: J.P. Lawrence
                                            Title: Vice President and
                                                   Treasurer

                                            OWNER:

                                            IRON MOUNTAIN STATUTORY TRUST - 1998

                                            By:  First Union National Bank, not
                                                 in its individual capacity, but
                                                 solely as trustee

                                            By: /s/ Timothy A. Donmoyer
                                               --------------------------------
                                            Name:  Timothy A. Donmoyer
                                            Title: Vice President

                                            Consented to by:

                                            AGENT BANK:

                                            THE BANK OF NOVA SCOTIA

                                            By: /s/ T.M. Pitcher
                                               --------------------------------
                                            Name: T.M. Pitcher
                                            Title: Authorized Signatory

<PAGE>

                                            LC ISSUER:

                                            BTM CAPITAL CORPORATION

                                            By: /s/ Paul F. Nolan
                                               --------------------------------
                                            Name:  Paul F. Nolan
                                            Title: Senior Vice President



</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-10.2
<SEQUENCE>4
<FILENAME>a2079805zex-10_2.txt
<DESCRIPTION>EXHIBIT 10.2
<TEXT>
<PAGE>

                                                               EXHIBIT 10.2

                     AMENDMENT NO. 5 AND CONSENT TO GUARANTY

     AMENDMENT NO. 5 AND CONSENT TO UNCONDITIONAL GUARANTY dated as of
March 15, 2002 between IRON MOUNTAIN INCORPORATED, a Pennsylvania corporation
("GUARANTOR") and IRON MOUNTAIN STATUTORY TRUST - 1998, a Connecticut
statutory trust ("OWNER"), and consented to by each of the Lenders and Agent
Bank listed on the signature pages hereto.

     Guarantor and Owner are parties to a certain Unconditional Guaranty dated
as of October 1, 1998, as amended by Amendment and Consent to Guaranty dated as
of July 1, 1999, by Amendment No. 2 and Consent to Guaranty dated as of October
22, 1999, Amendment No. 3 and Consent to Guaranty dated as of January 31, 2000
and Amendment No. 4 and Consent to Guaranty dated as of August 15, 2001
(collectively, the "GUARANTY") pursuant to which the Guarantor guarantees to
Owner and the Indemnified Parties the Guaranteed Obligations, including, without
limitation, certain obligations of Iron Mountain Information Management, Inc.
(f/k/a "Iron Mountain Records Management, Inc.") ("LESSEE/AGENT") under (i) a
Lease Agreement from Owner to Lessee/Agent dated as of October 1, 1998, as
amended (the "LEASE"), and (ii) an Amended and Restated Agency Agreement between
Lessee/Agent and Owner dated as of October 1, 1998, as amended (the "AGENCY
AGREEMENT"). Each of the Lease and the Agency Agreement have been assigned to
the Agent Bank pursuant to an Assignment of Lease and Agency Agreement from
Owner to Agent Bank and consented to by Lessee/Agent dated as of October 1,
1998. Guarantor has requested that Owner, Agent Bank and the Lenders amend the
Guaranty with respect to certain covenants and related definitions and Guarantor
has requested that the Lenders and Agent Bank consent to such changes.
Accordingly, the parties hereto agree as follows:

     Section 1. DEFINITIONS. Except as otherwise defined in this Agreement,
terms defined in the Guaranty are used herein as defined therein.

     Section 2. AMENDMENTS. Subject to the terms and conditions contained
herein, the Guaranty is hereby amended as follows:

     A. SECTION 9. Section 9 of the Guaranty is hereby amended by adding the
following after the last sentence thereof:

     "Any financial statement or other document required to be delivered
pursuant to this Section 9 shall be deemed to have been delivered on the date on
which the Guarantor posts such financial statement or such document on the
Intralinks website on the Internet at www.intralinks.com; provided that the
Guarantor shall give notice of any such posting (together with access
instructions therefor) to the Agent Bank (and the Agent Bank shall then give
notice of any such posting with such access instructions to the Lenders).
Notwithstanding the foregoing, the Guarantor shall deliver paper copies of any
financial statement or other document referred to in this Section 9 to the Agent
Bank if the Agent Bank or any Lender requests the

<PAGE>

Guarantor to deliver such paper copies until written notice to cease delivering
such paper copies is given by the Agent Bank."

     B. LEVERAGE RATIO. The Leverage Ratio "grid" in Section 10(a)(i) is hereby
deleted in its entirety and replaced as follows:

<Table>
<Caption>
                                                          LEVERAGE COVERAGE
        PERIOD                                            RATIO
        ------                                            -----
        <S>                                               <C>
        From the date hereof through March 31, 2002       5.50 to 1
        From April 1, 2002 through December 31, 2002      5.65 to 1
        From January 1, 2003 through March 31, 2003       5.55 to 1
        From April 1, 2003 through June 30, 2003          5.45 to 1
        From July 1, 2003 through September 30, 2003      5.35 to 1
        From October 1, 2003 through December 31, 2003    5.25 to 1
        From January 1, 2004 and at all times thereafter  5.00 to 1
</Table>

     C. INTEREST COVERAGE RATIO. The Interest Coverage Ratio "grid" in Section
10(a)(ii) of the Guaranty is hereby deleted in its entirety and replaced as
follows:

<Table>
<Caption>
                                                          INTEREST COVERAGE
        PERIOD                                            RATIO
        ------                                            -----
        <S>                                               <C>
        From the date hereof through June 30, 2003        2.00 to 1
        From July 1, 2003 through September 30, 2003      2.10 to 1
        From October 1, 2003 through December 31, 2003    2.15 to 1
        From January 1, 2004 through June 30, 2004        2.25 to 1
        From July 1, 2004 through September 30, 2004      2.35 to 1
        From October 1, 2004 and at all times thereafter  2.50 to 1
</Table>

     D. SECTION 10(a)(iv). LIENS. Section 10(a)(iv) of the Guaranty is hereby
amended by deleting in clause (iv)(B) thereof the amount "$1,000,000" and
replacing it with the amount "$10,000,000."

     E. SECTION 10(C). DEFINITIONS. The defined term "Credit Agreement" set
forth in Section 10(c) of the Guaranty is hereby amended and restated as
follows:

     "CREDIT AGREEMENT shall mean the Fifth Amended and Restated Credit
Agreement dated as of March 15, 2002 among Guarantor and the other parties
thereto, as amended, amended and restated, modified, extended, refinanced or
supplemented from time to time, except to the extent that the Operative
Documents refer to it as in effect on the date hereof."

                                       -2-
<PAGE>

     F. PERMITTED TRANSACTIONS. Section 10(d)(x) of the Guaranty is hereby
amended by adding the following after the last sentence thereof:

     "Nothing in this Guaranty or any other Operative Document shall, or shall
be deemed to, prohibit or restrict the merger of the Guarantor with or into
another corporation for the sole purpose of changing the Guarantor's domicile
from Pennsylvania to Delaware, so long as the surviving corporation of such
merger, if such surviving corporation is not the Guarantor, shall expressly
assume in writing the obligations of the Guarantor under this Agreement and the
other Operative Documents to which Guarantor is a party and expressly agree in
writing to be bound by all other provisions applicable to the Guarantor under
this Guaranty and such Operative Documents in a manner reasonably satisfactory
to the Agent Bank."

     Section 3. CONDITIONS OF EFFECTIVENESS. This Agreement shall become
effective as of the date hereof when, and only when, the Owner, the Lenders and
the Agent Bank shall have received a counterpart of this Agreement duly executed
by the parties hereto.

     Section 4. REPRESENTATIONS AND WARRANTIES. As of the date hereof, Guarantor
hereby represents and warrants to Owner, Agent Bank, the Lenders and their
respective counsel that:

     A. the representations and warranties made by Guarantor in each Operative
Document to which it is a party and the Guarantor's Certificate dated and
delivered to the Lenders as of February 1, 2000 are true and correct in all
material respects

     B. on and as of the date hereof, as though made on and as of such date (or,
if any such representation or warranty is expressly stated to have been made as
of a specific date, as of such specific date); and

     C. no event has occurred and is continuing under any Operative Document
that constitutes a Default or an Event of Default.

     Section 5. MISCELLANEOUS. Except as herein provided, the Guaranty and each
of the other Operative Documents shall remain unchanged and in full force and
effect. Upon the effectiveness of this Agreement, on and after the date hereof,
each reference in any Operative Document to the Guaranty shall mean and be a
reference to the Guaranty as amended hereby. This Agreement may be executed in
any number of counterparts, all of which taken together shall constitute one and
the same instrument and any of the parties hereto may execute this Agreement by
signing any such counterpart. This Agreement shall be governed by, and construed
in accordance with, the law of the Commonwealth of Massachusetts.

                 [REMAINDER OF PAGE BLANK/SIGNATURES TO FOLLOW]

                                       -3-
<PAGE>

     IN WITNESS WHEREOF, the parties hereunto have caused this Agreement to be
executed by their respective officers thereunto duly authorized, as of the date
first above written.

                                              GUARANTOR:

                                              IRON MOUNTAIN INCORPORATED

                                              By: /s/ J.P. Lawrence
                                                 -----------------------------
                                              Name: J.P. Lawrence
                                              Title: Vice President and
                                                     Treasurer

                                              OWNER:

                                              IRON MOUNTAIN STATUTORY TRUST -
                                              1998

                                              By: First Union National Bank,
                                                  not in its individual
                                                  capacity, but solely as
                                                  trustee

                                               By: /s/ Timothy A. Donmoyer
                                                  -----------------------------
                                               Name:  Timothy A. Donmoyer
                                               Title: Vice President


                                              Consented to by:

                                              LENDERS:

                                              THE BANK OF NOVA SCOTIA, as Agent
                                              Bank and as a Lender

                                              By: /s/ T.M. Pitcher
                                                 ------------------------------
                                              Name: T.M. Pitcher
                                              Title: Authorized Signatory

                            [GUARANTY AMENDMENT NO.5]

<PAGE>

                                              UNION BANK OF CALIFORNIA, N.A.

                                              By: /s/ David W. Kinkela
                                                 ------------------------------
                                              Name: David W. Kinkela
                                              Title: Vice President

                                              FLEET NATIONAL BANK

                                              By: /s/ Michael A. Palmer
                                                 ------------------------------
                                              Name: Michael A. Palmer
                                              Title: Senior Vice President

                                              FLEET NATIONAL BANK, f/k/a
                                              BANKBOSTON, N.A.

                                              By: /s/ Michael A. Palmer
                                                 -------------------------------
                                              Name: Michael A. Palmer
                                              Title: Senior Vice President

                                              CITIZENS BANK OF MASSACHUSETTS,
                                              f/k/a USTRUST

                                              By: /s/ Edward C. Thaute
                                                 ------------------------------
                                              Name: Edward C. Thaute
                                              Title: Vice President

                            [GUARANTY AMENDMENT NO.5]



</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-10.3
<SEQUENCE>5
<FILENAME>a2079805zex-10_3.txt
<DESCRIPTION>EXHIBIT 10.3
<TEXT>
<PAGE>

                                                                    EXHIBIT 10.3

                 AMENDMENT NO. 1 AND CONSENT TO LEASE AGREEMENT

         AMENDMENT NO. 1 AND CONSENT TO LEASE AGREEMENT dated as of March 15,
2002 between IRON MOUNTAIN INFORMATION MANAGEMENT, INC. (f/k/a "Iron Mountain
Records Management, Inc."), a Delaware corporation ("LESSEE") and IRON MOUNTAIN
STATUTORY TRUST - 1999, a Connecticut statutory trust ("OWNER"), and consented
to by each of the Agent Bank and the LC Issuer listed on the signature pages
hereto.

         Lessee and Owner are parties to a certain Lease Agreement between Owner
and Lessee dated as of July 1, 1999 (as amended and supplemented from time to
time, the "LEASE"). The Lease has been assigned to the Agent Bank pursuant to an
Assignment of Lease and Agency Agreement from Owner to Agent Bank and consented
to by Lessee dated as of July 1, 1999. Lessee has requested that Owner amend the
Lease with respect to certain defaults and related definitions; and Lessee has
requested that the Agent Bank and the LC Issuer consent to such changes.
Accordingly, the parties hereto agree as follows:

         Section 1. DEFINITIONS. Except as otherwise defined in this Agreement,
terms defined in Appendix I to the Lease are used herein as defined therein.

         Section 2. AMENDMENTS. Subject to the terms and conditions contained
herein, the Lease is hereby amended as follows:

         A. SECTION 21 (CONDITIONAL LIMITATIONS - EVENTS OF DEFAULT AND
REMEDIES). Section 21(a) of the Lease is hereby by amended by deleting in its
entirety clause (xi) thereof and replacing it as follows:

         "(xi) (i) one or more judgments, orders, decrees or arbitration awards
requiring Lessee or Guarantor to pay an aggregate amount of $5,000,000 or more
(exclusive of amounts covered by insurance issued by an insurer not an Affiliate
of the Guarantor) shall be rendered against Lessee or Guarantor in connection
with any single or related series of transactions, incidents or circumstances
and the same shall not be satisfied, vacated or stayed for a period of sixty
(60) consecutive days; or (ii) any judgment, writ, assessment, warrant of
attachment, tax lien or execution or similar process shall be issued or levied
against a substantial part of the property of the Lessee or Guarantor and the
same shall not be released, stayed, vacated, or otherwise dismissed within sixty
(60) days after issue or levy; or"

         B. APPENDIX I - DEFINITIONS. The defined term "Credit Agreement" set
forth in Appendix I to the Lease is hereby amended and restated as follows:

            "CREDIT AGREEMENT shall mean the Fifth Amended and Restated Credit
Agreement dated as of March 15, 2002 among Guarantor and the other parties
thereto as amended, amended and restated, modified, extended, refinanced or
supplemented from time to time, except to the extent that the Operative
Documents refer to it as in effect on the date hereof."

<PAGE>

         Section 3. CONDITIONS OF EFFECTIVENESS. This Agreement shall become
effective as of the date hereof when, and only when, the Owner, the Agent Bank
and the LC Issuer shall have received a counterpart of this Agreement duly
executed by the parties hereto.

         Section 4. REPRESENTATIONS AND WARRANTIES. As of the date hereof,
Lessee hereby represents and warrants to Owner, the LC Issuer, the Agent Bank,
the Lenders and their respective counsel that:

         A. the representations and warranties made by Lessee in each Operative
Document to which it is a party are true and correct in all material respects on
and as of the date hereof, as though made on and as of such date (or, if any
such representation or warranty is expressly stated to have been made as of a
specific date, as of such specific date); and

         B. no event has occurred and is continuing under any Operative Document
that constitutes a Default or an Event of Default.

         Section 5. MISCELLANEOUS. Except as herein provided, the Lease and each
of the other Operative Documents shall remain unchanged and in full force and
effect. Upon the effectiveness of this Agreement, on and after the date hereof,
each reference in any Operative Document to the Lease shall mean and be a
reference to the Lease as amended hereby. This Agreement may be executed in any
number of counterparts, all of which taken together shall constitute one and the
same instrument and any of the parties hereto may execute this Agreement by
signing any such counterpart. This Agreement shall be governed by, and construed
in accordance with, the law of the Commonwealth of Massachusetts.

                 [REMAINDER OF PAGE BLANK/SIGNATURES TO FOLLOW]


                                      -2-

<PAGE>

         IN WITNESS WHEREOF, the parties hereunto have caused this Agreement to
be executed by their respective officers thereunto duly authorized, as of the
date first above written.

                                     LESSEE:

                                     IRON MOUNTAIN INFORMATION MANAGEMENT, INC.

                                     By: /s/ J.P. Lawrence
                                        ---------------------------------------
                                     Name:  J.P. Lawrence
                                     Title: VP & Treasurer

                                     OWNER:

                                     IRON MOUNTAIN STATUTORY TRUST - 1999

                                     By: First Union National Bank, not in its
                                         individual capacity, but solely as
                                         trustee

                                     By: /s/ Timothy A. Donmoyer
                                        ---------------------------------------
                                     Name:  Timothy A. Donmoyer
                                     Title: Vice President

                                     Consented to by:

                                     AGENT BANK:

                                     WACHOVIA CAPITAL INVESTMENTS, INC.

                                     By: /s/ J. Andrew Phelps
                                        ---------------------------------------
                                     Name:  /s/ J. Andrew Phelps
                                     Title: Vice President

                       [LEASE AMENDMENT NO. 1 - WACHOVIA]

<PAGE>

                                     LC ISSUER:

                                     BTM CAPITAL CORPORATION

                                     By: /s/ Paul F. Nolan
                                       ----------------------------------------
                                     Name:  Paul F. Nolan
                                     Title: Senior Vice President




                       [LEASE AMENDMENT NO. 1 - WACHOVIA]



</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-10.4
<SEQUENCE>6
<FILENAME>a2079805zex-10_4.txt
<DESCRIPTION>EXHIBIT 10.4
<TEXT>
<PAGE>
                                                                  EXHIBIT 10.4

                           AMENDMENT NO. 4 TO GUARANTY

     AMENDMENT NO. 4 TO UNCONDITIONAL GUARANTY dated as of March 20, 2001
between IRON MOUNTAIN INCORPORATED, a Pennsylvania corporation (Guarantor),
formerly known as Pierce Leahy Corp. as survivor by merger with Iron Mountain
Incorporated, a Delaware corporation (IM Delaware), and IRON MOUNTAIN STATUTORY
TRUST - 1999, a Connecticut statutory trust (Owner), and consented to by each of
the Lenders and Agent Bank listed on the signature pages hereto.

     Guarantor and Owner are parties to a certain Unconditional Guaranty dated
as of July 1, 1999, as amended by Amendment No. 1 and Consent to Guaranty dated
as of October 22, 1999, Amendment No. 2 and Consent to Guaranty dated as of
January 31, 2000 and Amendment No. 3 and Consent to Guaranty dated as of August
16, 2000 (the Guaranty) pursuant to which Guarantor has guaranteed to Owner and
the Indemnified Parties the Guaranteed Obligations, including, without
limitation, certain obligations of Iron Mountain Records Management, Inc.
(Lessee/Agent) under (i) a Lease Agreement from Owner to Lessee/Agent dated as
of July 1, 1999 (the Lease), and (ii) an Agency Agreement between Lessee/Agent
and Owner dated as of July 1, 1999 (the Agency Agreement). Each of the Lease and
the Agency Agreement have been assigned to the Agent Bank pursuant to an
Assignment of Lease and Agency Agreement from Owner to Agent Bank and consented
to by Lessee/Agent dated as of July 1, 1999.

     Guarantor has requested that the Section 10(a)(iv)(ii) of the Guaranty be
amended as set forth below. Accordingly, the parties hereto agree as follows:

     SECTION 1. DEFINITIONS. Except as otherwise defined in this Agreement,
terms defined in the Guaranty are used herein as defined therein.

     SECTION 2. AMENDMENTS. Subject to the terms and conditions contained
herein, the Guaranty is hereby amended as follows:

          (a)   SUBORDINATED INDEBTEDNESS. Section 10(a)(iv)(ii) of the Guaranty
is hereby deleted in its entirety and replaced with the following:

               "(ii) any other purchase, redemption or retirement of
          Subordinated Indebtedness, so long as (i) no Default has occurred and
          is continuing and (ii) either (A) unless such other purchase,
          redemption or retirement is in connection with a refinancing of such
          Subordinated Indebtedness with the proceeds of, or in connection with
          an exchange of such Subordinated Indebtedness for a new series of,
          Senior Subordinated Debt issued within 60 days of the substantial
          completion of such purchase, redemption or retirement, or (B) after
          giving effect to such purchase, redemption or retirement, the ratio of
          Senior Debt on the last day of the most recently completed fiscal
          quarter of the Guarantor to EBITDA for the four quarters then ended on
          a PRO FORMA basis, after giving effect to such purchase, redemption or
          retirement and any Stock Repurchase consummated on or prior to

<PAGE>

          the date hereof, and to any borrowings to finance the same, as at the
          last day of the latest fiscal quarter is less than or equal to 1.5 to
          1."

     SECTION 3. CONDITIONS OF EFFECTIVENESS. This Agreement shall become
effective as of the date hereof when, and only when, the Owner, the Lenders and
the Agent Bank shall have received a counterpart of this Agreement duly executed
by the parties hereto.

     SECTION 4. REPRESENTATIONS AND WARRANTIES. As of the date hereof, Guarantor
hereby represents and warrants to Owner, Agent Bank, the Lenders and their
respective counsel that:

          (a)   the representations and warranties made by Guarantor in each
Operative Document to which it is a party are correct on and as of the date
hereof, as though made on and as of such date (or, if any such representation or
warranty is expressly stated to have been made as of a specific date, as of such
specific date); and

          (b)   no event has occurred and is continuing under any Operative
Document that constitutes a Default or an Event of Default.

     SECTION 5. MISCELLANEOUS. Except as herein provided, the Guaranty and each
of the other Operative Documents shall remain unchanged and in full force and
effect. Upon the effectiveness of this Agreement, on and after the date hereof,
each reference in any Operative Document to the Guaranty shall mean and be a
reference to the Guaranty as amended hereby. This Agreement may be executed in
any number of counterparts, all of which taken together shall constitute one and
the same instrument and any of the parties hereto may execute this Agreement by
signing any such counterpart. This Agreement shall be governed by, and construed
in accordance with, the law of the Commonwealth of Massachusetts.

                  [Remainder of Page Intentionally Left Blank]

                                      -2-
<PAGE>
     IN WITNESS WHEREOF, the parties hereunto have caused this Agreement to be
executed by their respective officers thereunto duly authorized, as of the date
first above written.

                                              GUARANTOR:

                                              IRON MOUNTAIN INCORPORATED

                                              By: /s/ J.P. Lawrence
                                                 ------------------------------
                                              Name: J.P.Lawrence
                                              Title: VP & Treasurer

                                              LENDERS:

                                              WACHOVIA CAPITAL INVESTMENTS,
                                              INC., as Agent Bank and as a
                                              Lender

                                              By: /s/ Charles J. O'Connor, Jr.
                                                 ------------------------------
                                              Name:  Charles J. O'Connor, Jr.
                                              Title: Senior Vice President

                           [GUARANTY AMENDMENT NO.4]

<PAGE>

                                              PNC COMMERCIAL, LLC

                                              By: /s/ John McEnery
                                                 ------------------------------
                                              Name: John McEnery
                                              Title: Vice President

                                              CITIZENS BANK OF MASSACHUSETTS AS
                                              SUCCESSOR-IN-INTEREST TO
                                              USTRUST

                                              By: /s/ Edward C. Thaute
                                                 ------------------------------
                                              Name:  Edward C. Thaute
                                              Title: Vice President

                                              NATIONAL CITY BANK

                                              By: /s/ Melissa Lindsy
                                                 ------------------------------
                                              Name:  Melissa Lindsy
                                              Title: Vice President

                                              DIAMOND LEASE (U.S.A.) INC.

                                              By: /s/ Jeffrey H. Fishman
                                                 ------------------------------
                                              Name:  JEFFREY H. FISHMAN
                                              Title: VP, Credit Administration

                                              BANK OF NEW YORK

                                              By: /s/ Kenneth P. Sneider, Jr.
                                                 ------------------------------
                                              Name:  Kenneth P. Sneider, Jr.
                                              Title: Vice President

                           [GUARANTY AMENDMENT NO.4]

<Page>

                                              OWNER:

                                              IRON MOUNTAIN STATUTORY TRUST -
                                              1999

                                              By: First Union National Bank,
                                                  not in its individual
                                                  capacity, but solely as
                                                  trustee

                                              By: /s/ W. Jeffrey Kramer
                                                 ------------------------------
                                              Name:  W. JEFFREY KRAMER
                                              Title: VICE PRESIDENT

                           [GUARANTY AMENDMENT NO.4]



</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-10.5
<SEQUENCE>7
<FILENAME>a2079805zex-10_5.txt
<DESCRIPTION>EXHIBIT 10.5
<TEXT>
<PAGE>

                                                               EXHIBIT 10.5

                     AMENDMENT NO. 5 AND CONSENT TO GUARANTY

     AMENDMENT NO. 5 AND CONSENT TO UNCONDITIONAL GUARANTY dated as of
March 15, 2002 between IRON MOUNTAIN INCORPORATED, a Pennsylvania corporation
("GUARANTOR") and IRON MOUNTAIN STATUTORY TRUST - 1999, a Connecticut
statutory trust ("OWNER"), and consented to by each of the Lenders and Agent
Bank listed on the signature pages hereto.

     Guarantor and Owner are parties to a certain Unconditional Guaranty dated
as of July 1, 1999 as amended by Amendment No. 1 and Consent to Guaranty dated
as of October 22, 1999, Amendment No. 2 and Consent to Guaranty dated as of
January 31, 2000, Amendment No. 3 and Consent to Guaranty dated as of August 16,
2000 and Amendment No. 4 and Consent to Guaranty dated as of March 20, 2001
(collectively, the "GUARANTY") pursuant to which the Guarantor guarantees to
Owner and the Indemnified Parties the Guaranteed Obligations, including, without
limitation, certain obligations of Iron Mountain Information Management, Inc.
(f/k/a "Iron Mountain Records Management, Inc.") ("LESSEE/AGENT") under (i) a
Lease Agreement from Owner to Lessee/Agent dated as of July 1, 1999 (as amended
or supplemented from time to time, the "LEASE"), and (ii) an Agency Agreement
between Lessee/Agent and Owner dated as of July 1, 1999 (the "AGENCY
AGREEMENT"). Each of the Lease and the Agency Agreement have been assigned to
the Agent Bank pursuant to an Assignment of Lease and Agency Agreement from
Owner to Agent Bank and consented to by Lessee/Agent dated as of July 1, 1999.
Guarantor has requested that Owner, Agent Bank and the Lenders amend the
Guaranty with respect to certain covenants and related definitions; and
Guarantor has requested that the Lenders and Agent Bank consent to such changes.
Accordingly, the parties hereto agree as follows:

     Section 1. DEFINITIONS. Except as otherwise defined in this Agreement,
terms defined in the Guaranty are used herein as defined therein.

     Section 2. AMENDMENTS. Subject to the terms and conditions contained
herein, the Guaranty is hereby  amended as follows:

     A. SECTION 9. Section 9 of the Guaranty is hereby by amended by adding a
new last paragraph thereto to read as follows:

     "Any financial statement or other document required to be delivered
pursuant to this Section 9 shall be deemed to have been delivered on the date on
which the Guarantor posts such financial statement or such document on the
Intralinks website on the Internet at www.intralinks.com; provided that the
Guarantor shall give notice of any such posting (together with access
instructions therefor) to the Agent Bank (and the Agent Bank shall then give
notice of any such posting with such access instructions to the Lenders).
Notwithstanding the foregoing, the Guarantor shall deliver paper copies of any
financial statement or other document referred to in this Section 9 to the Agent
Bank if the Agent Bank or any Lender requests the

<PAGE>

Guarantor to deliver such paper copies until written notice to cease delivering
such paper copies is given by the Agent Bank."

     B. SECTION 10(a)(v). Section 10(a)(v) (LIENS) of the Guaranty is hereby
amended by deleting in clause (iv)(B) thereof the amount "$3,000,000" and
replacing it with the amount "$10,000,000".

     C. SECTION 10(c). The defined term "Credit Agreement" set forth in Section
10(c) of the Guaranty is hereby amended and restated as follows:

     "CREDIT AGREEMENT shall mean the Fifth Amended and Restated Credit
Agreement dated as of March 15, 2002 among Guarantor and the other parties
thereto as amended, amended and restated, modified, extended, refinanced or
supplemented from time to time, except to the extent that the Operative
Documents refer to it as in effect on the date hereof."

     D. PERMITTED TRANSACTIONS. Section 10(d)(x) of the Guaranty is hereby
amended by adding the following after the last sentence thereof:

     "Nothing in this Guaranty or any Operative Document shall, or shall be
deemed to, prohibit or restrict the merger of the Guarantor with or into another
corporation for the sole purpose of changing the Guarantor's domicile from
Pennsylvania to Delaware, so long as the surviving corporation of such merger,
if such surviving corporation is not the Guarantor, shall expressly assume in
writing the obligations of the Guarantor under this Agreement and the other
Operative Documents to which Guarantor is a party and expressly agree in writing
to be bound by all other provisions applicable to the Guarantor under this
Guaranty and such Operative Documents in a manner reasonably satisfactory to the
Agent Bank."

     Section 3. CONDITIONS OF EFFECTIVENESS. This Agreement shall become
effective as of the date hereof when, and only when, the Owner, the Lenders and
the Agent Bank shall have received a counterpart of this Agreement duly executed
by the parties hereto.

     Section 4. REPRESENTATIONS AND WARRANTIES. As of the date hereof, Guarantor
hereby represents and warrants to Owner, Agent Bank, the Lenders and their
respective counsel that:

     A. the representations and warranties made by Guarantor in each Operative
Document to which it is a party and the Guarantor Certificate dated and
delivered to the Lenders as of February 1, 2000 are true and correct in all
material respects on and as of the date hereof, as though made on and as of such
date (or, if any such representation or warranty is expressly stated to have
been made as of a specific date, as of such specific date); and

     B. no event has occurred and is continuing under any Operative Document
that constitutes a Default or an Event of Default.

     Section 5. MISCELLANEOUS. Except as herein provided, the Guaranty and each
of the other Operative Documents shall remain unchanged and in full force and
effect. Upon the effectiveness of this Agreement, on and after the date hereof,
each reference in any Operative Document to the Guaranty shall mean and be a
reference to the Guaranty as amended hereby. This Agreement may be executed in
any number of counterparts, all of which taken together

                                       -2-
<PAGE>

shall constitute one and the same instrument and any of the parties hereto may
execute this Agreement by signing any such counterpart. This Agreement shall be
governed by, and construed in accordance with, the law of the Commonwealth of
Massachusetts.

                                       -3-
<PAGE>

     IN WITNESS WHEREOF, the parties hereunto have caused this Agreement to be
executed by their respective officers thereunto duly authorized, as of the date
first above written.

                                              GUARANTOR:

                                              IRON MOUNTAIN INCORPORATED

                                              By: /s/ J.P. Lawrence
                                                 ------------------------------
                                              Name: J.P. Lawrence
                                              Title: Vice President and
                                                     Treasurer

                                              OWNER:

                                              IRON MOUNTAIN STATUTORY TRUST --
                                              1999

                                              By: First Union National Bank, not
                                                  in its individual capacity,
                                                  but solely as trustee

                                              By: /s/ Timothy A. Donmoyer
                                                 ------------------------------
                                              Name:  /s/ Timothy A. Donmoyer
                                              Title: Vice President

                                              Consented to by:

                                              LENDERS:

                                              WACHOVIA CAPITAL INVESTMENTS,
                                              INC., as Agent Bank and
                                              as a Lender

                                              By: /s/ J. Andrew Phelps
                                                 ------------------------------
                                              Name: J. Andrew Phelps
                                              Title: Vice President

                           [GUARANTY AMENDMENT NO. 5]

<PAGE>

                                              PNC COMMERCIAL LLC

                                              By: /s/ John F. McEnery
                                                 ------------------------------
                                              Name: John F. McEnery
                                              Title: Vice President

                                              CITIZENS BANK OF MASSACHUSETTS
                                              f/k/a USTRUST

                                              By: /s/ Edward C. Thaute
                                                 ------------------------------
                                              Name: Edward C. Thaute
                                              Title: Vice President

                                              NATIONAL CITY BANK

                                              By: /s/ Tara M. Handforth
                                                 ------------------------------
                                              Name: Tara M. Handforth
                                              Title: Assistant Vice President

                                              DIAMOND LEASE (U.S.A.) INC.

                                              By: /s/ Jeffrey H. Fishman
                                                 ------------------------------
                                              Name: Jeffrey H. Fishman
                                              Title: Vice President, Credit
                                                     Administration

                                              BANK OF NEW YORK

                                              By: /s/ Kenneth Sneider
                                                 ------------------------------
                                              Name: Kenneth Sneider
                                              Title: Vice President

                            [GUARANTY AMENDMENT NO. 5]






</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-10.6
<SEQUENCE>8
<FILENAME>a2079805zex-10_6.txt
<DESCRIPTION>EXHIBIT 10.6
<TEXT>
<PAGE>

                                                                EXHIBIT 10.6


  AMENDMENT TO MASTER LEASE AND SECURITY AGREEMENT AND UNCONDITIONAL GUARANTY

      THIS AMENDMENT (this "AMENDMENT"), dated as of March 15, 2002, is entered
into among IRON MOUNTAIN STATUTORY TRUST - 2001, a Connecticut statutory trust
(the "LESSOR"), IRON MOUNTAIN INFORMATION MANAGEMENT, INC. (f/k/a Iron Mountain
Records Management, Inc.), a Delaware corporation (the "LESSEE") and IRON
MOUNTAIN INCORPORATED, a Pennsylvania corporation (the "GUARANTOR").

                               W I T N E S S E T H :

      WHEREAS, the Lessor and the Lessee have heretofore entered into a Master
Lease and Security Agreement, dated as of May 22, 2001, as amended by Amendment
No. 1 dated as of November 1, 2001 (the "LEASE"); and

      WHEREAS, the Guarantor has executed and delivered an Unconditional
Guaranty dated as of May 22, 2001 (the "GUARANTY") in favor of the Lessor; and

      WHEREAS, the Lessee and the Guarantor have requested that the Lease and
the Guaranty be amended in certain respects, and the Lessor has indicated its
willingness to consent to such amendments;

      NOW, THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties hereto hereby agree as
follows:

      1. DEFINITIONS. Capitalized terms used but not otherwise defined in
this Amendment have the meanings specified in Appendix 1 to the Lease; and
the rules of interpretation set forth in Appendix 1 shall apply to this
Amendment.

      2. AMENDMENT TO LEASE. The definition of "Iron Mountain Credit Agreement"
in Appendix 1 of the Lease is hereby amended in full to read as follows:

            "IRON MOUNTAIN CREDIT AGREEMENT" means the Fifth Amended and
      Restated Credit Agreement dated as of March 15, 2002, among the Guarantor,
      Iron Mountain Canada Corporation, the lenders from time to time parties
      thereto, The Chase Manhattan Bank of Canada, as Canadian Administrative
      Agent, and The Chase Manhattan Bank, as Administrative Agent, as amended,
      amended and restated, modified, extended, refinanced or supplemented from
      time to time (except as otherwise specified in any Operative Document).

      3. AMENDMENTS TO GUARANTY. The Guaranty is hereby amended as follows:

            (a) Section 10 of the Guaranty is amended by adding a new last
paragraph thereto to read as follows:

<PAGE>

            Any financial statement required to be delivered pursuant to this
      Section 10 shall be deemed to have been delivered on the date on which the
      Guarantor posts such financial statement on the Intralinks website on the
      Internet at WWW.INTRALINKS.COM; provided that the Guarantor shall give
      notice of any such posting (together with access instructions therefor) to
      the Lessor, each Equity Participant and the Administrative Agent (and the
      Administrative Agent shall then give notice of any such posting (with such
      access instructions) to the Lenders). Notwithstanding the foregoing, the
      Guarantor shall deliver paper copies of any financial statement referred
      to in this Section 10 to the Administrative Agent if the Administrative
      Agent or any Lender requests the Guarantor to deliver such paper copies
      until written notice to cease delivering such paper copies is given by the
      Administrative Agent.

            (b) The Leverage Ratio grid set forth in Section 11(a)(i) of the
Guaranty is amended in full to read as follows:

      ------------------------------------------------------------------
      PERIOD                                             LEVERAGE RATIO
      ------------------------------------------------------------------
      From July 1, 2001 through March 31, 2002             5.50 to 1
      ------------------------------------------------------------------
      From April 1, 2002 through December 31, 2002         5.65 to 1
      ------------------------------------------------------------------
      From January 1, 2003 through March 31, 2003          5.55 to 1
      ------------------------------------------------------------------
      From April 1, 2003 through June 30, 2003             5.45 to 1
      ------------------------------------------------------------------
      From July 1, 2003 through September 30, 2003         5.35 to 1
      ------------------------------------------------------------------
      From October 1, 2003 through December 31, 2003       5.25 to 1
      ------------------------------------------------------------------
      From January 1, 2004 and at all times thereafter     5.00 to 1
      ------------------------------------------------------------------


            (c) The Interest Coverage Ratio grid set forth in Section 11(a)(ii)
of the Guaranty is amended in full to read as follows:

      ------------------------------------------------------------------
      PERIOD                                         INTEREST COVERAGE
                                                            RATIO
      ------------------------------------------------------------------
      From July 1, 2001 through June 30, 2003               2.00
      ------------------------------------------------------------------
      From July 1, 2003 through September 30, 2003          2.10
      ------------------------------------------------------------------
      From October 1, 2003 through December 31,             2.15
      2003
      ------------------------------------------------------------------
      From January 1, 2004 through June 30, 2004            2.25
      ------------------------------------------------------------------
      From July 1, 2004 through September 30, 2004          2.35
      ------------------------------------------------------------------
      From October 1, 2004 and at all times                 2.50
      thereafter
      ------------------------------------------------------------------

            (d) Section 11(a)(iv)(iv)(B) of the Guaranty is amended by replacing
the amount "$3,000,000" set forth therein with the amount "$10,000,000".

            (e)   Section 13(a)(i) of the Guaranty is amended in full to read
as follows:

      "(i) is a corporation duly organized, validly existing and in good
      standing under the laws of the jurisdiction of its organization, and"


                                      -2-
<PAGE>

      4. CONSENT TO REINCORPORATION. Nothing in any Operative Document shall, or
shall be deemed to, prohibit or restrict the merger of the Guarantor with or
into another corporation for the sole purpose of changing the Guarantor's
domicile from Pennsylvania to Delaware, so long as the surviving corporation of
such merger, if such surviving corporation is not the Guarantor, shall expressly
assume, in writing, the obligations of the Guarantor under the Guaranty and any
other Operative Documents to which it is a party, and expressly agree in writing
to be bound by all other provisions applicable to the Guarantor under the
Guaranty and such other Operative Documents in a manner reasonably satisfactory
to the Administrative Agent.

      5. CONDITION TO EFFECTIVENESS. This Amendment shall become effective as of
the date hereof when the Administrative Agent shall have received counterparts
of this Amendment executed by the Lessor, the Lessee, the Guarantor, and the
Collateral Agent.

      6. REPRESENTATIONS AND WARRANTIES. As of the date hereof, each of the
Lessee and the Guarantor hereby represents and warrants to Lessor, the
Administrative Agent and the Lenders that:

            (a) the representations and warranties made by it in each Operative
Document to which it is a party are true and correct in all material respects on
and as of the date hereof as though made on and as of such date, except to the
extent such representations and warranties relate solely to an earlier date, in
which case such representations and warranties shall be true and correct on and
as of such earlier date; and

            (b) no event has occurred and is continuing under any Operative
Document that constitutes a Default or an Event of Default.

      7. COUNTERPARTS. This Amendment may be executed in several counterparts
and by the different parties hereto on separate counterparts, all of which taken
together shall constitute but one and the same Amendment. Delivery of an
executed counterpart of a signature page of this Amendment by telecopy shall be
effective as delivery of a manually executed counterpart of this Amendment.

      8. GOVERNING LAW. THIS AMENDMENT SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.

      9. OPERATIVE DOCUMENTS REMAIN IN EFFECT. Except as provided herein, all
provisions, terms and conditions of the Operative Documents shall remain in full
force and effect. As amended hereby, the Operative Documents are ratified and
confirmed in all respects.


                                      -3-
<PAGE>

      IN WITNESS WHEREOF, the parties have caused this Amendment to be duly
executed and delivered as of the date first above written.

                              IRON MOUNTAIN STATUTORY TRUST - 2001,
                              as Lessor
                              By:   First Union National Bank,
                                    not in its individual capacity, except as
                                    expressly provided herein, but solely as
                                    trustee

                              By: /s/ Evangelos Ntavos
                                  --------------------------------------
                                  Evangelos Ntavos
                                  Trust officer

                              IRON MOUNTAIN INFORMATION
                              MANAGEMENT, INC. (f/k/a Iron Mountain Records
                              Management, Inc.), as Lessee

                              By: /s/ JP Lawrence
                                  --------------------------------------
                                  JP Lawrence
                                  VP and Treasurer


                              IRON MOUNTAIN INCORPORATED,
                              as Guarantor

                              By: /s/ JP Lawrence
                                  --------------------------------------
                                  JP Lawrence
                                  VP and Treasurer


      Consented to and Agreed:


      THE BANK OF NOVA SCOTIA,
      as Collateral Agent


      By: /s/ T.M. Pitcher
          -------------------------------
          T.M. Pitcher
          Authorized Signatory


                                      -4-



</TEXT>
</DOCUMENT>
</SUBMISSION>
