<SUBMISSION>
<ACCESSION-NUMBER>0001181431-06-050696
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20060829
<FILING-DATE>20060831
<DATE-OF-FILING-DATE-CHANGE>20060831
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>Trout James
<CIK>0001371569
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-32336
<FILM-NUMBER>061069740
</FILING-VALUES>
<BUSINESS-ADDRESS>
<PHONE>415-738-6500
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>560 MISSION STREET, SUITE 2900
<CITY>SAN FRANCISCO
<STATE>CA
<ZIP>94105
</MAIL-ADDRESS>
</REPORTING-OWNER>
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>Digital Realty Trust, Inc.
<CIK>0001297996
<ASSIGNED-SIC>6798
<IRS-NUMBER>000000000
<STATE-OF-INCORPORATION>MD
<FISCAL-YEAR-END>0726
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>560 MISSION STREET
<STREET2>SUITE 2900
<CITY>SAN FRANCISCO
<STATE>CA
<ZIP>94105
<PHONE>(415)738-6500
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>560 MISSION STREET
<STREET2>SUITE 2900
<CITY>SAN FRANCISCO
<STATE>CA
<ZIP>94105
</MAIL-ADDRESS>
</ISSUER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rrd127007.xml
<DESCRIPTION>FORM 4 FOR JAMES TROUT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2006-08-29</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001297996</issuerCik>
        <issuerName>Digital Realty Trust, Inc.</issuerName>
        <issuerTradingSymbol>DLR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001371569</rptOwnerCik>
            <rptOwnerName>Trout James</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>560 MISSION STREET, SUITE 2900</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94105</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Sr. VP, Portfolio &amp; Tech Ops</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Class C Profits Interest Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2006-08-29</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>16667</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>16667</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>66667</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Class C profits interest units (&quot;Class C Units&quot;) are membership interests in Digital Realty Trust, L.P., a Maryland limited partnership of which the issuer is the general partner.  A number of Class C Units, up to 60%, will vest on September 30, 2008, and thereafter a number of Class C Units, up to a maximum of 1-2/3% will vest monthly, except that up to 100% of the Class C Units will vest upon a change in control of the issuer, provided in each case that (i) the cumulative return to the issuer's common stockholders as measured from October 1, 2005 meets certain targets and (ii) the reporting person remains employed by the issuer for a certain period. Partial vesting is possible based on the cumulative return to the Issuer's common stockholders, the period of time the reporting person remains employed by the issuer and the issuer's stock price for the 5 consecutive trading days ending on the measurement date.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/Barbara Polster, attorney-in-fact</signatureName>
        <signatureDate>2006-08-31</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
