CERTIFICATION PURSUANT TO
18 U.S.C. Section 1350, as adopted pursuant to
Section 906 of the Sarbanes-Oxley Act of 2002
In connection with the filing of the Quarterly Report on Form 10-Q for the quarter ended September 30, 2007 (the "Report") by Iron Mountain Incorporated (the "Company"), the undersigned, as the Chief Financial Officer of the Company, hereby certifies pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:
| Date: November 9, 2007 | |
/s/ BRIAN P. MCKEON Brian P. McKeon Chief Financial Officer |