SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person* Mills Joshua Ananda (Last) (First) (Middle) 560 MISSION STREET SUITE 2900 (Street) SAN FRANCISCO CA 94105 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 08/24/2010	3. Issuer Name and Ticker or Trading Symbol Digital Realty Trust, L.P. [ NONE ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) General Counsel	5. If Amendment, Date of Original Filed (Month/Day/Year)
			6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Long-Term Incentive Units(1)	(2)	(3)	Common OP Units	96(2)	0	D
Long-Term Incentive Units(1)	(4)	(3)	Common OP Units	2,397(4)	0	D
Long-Term Incentive Units(1)	(5)	(3)	Common OP Units	13,447(5)	0	D
Long-Term Incentive Units(1)	(6)	(3)	Common OP Units	1,753(6)	0	D
Long-Term Incentive Units(1)	(7)	(3)	Common OP Units	1,403(7)	0	D
Long-Term Incentive Units(1)	(8)	(3)	Common OP Units	3,709(8)	0	D
Long-Term Incentive Units(1)	(9)	(3)	Common OP Units	2,968(9)	0	D
Long-Term Incentive Units(1)	(10)	(3)	Common OP Units	2,962(10)	0	D
Long-Term Incentive Units(1)	(11)	(3)	Common OP Units	3,467(11)	0	D

Explanation of Responses:

1. Long-term incentive units are membership interests in Digital Realty Trust, L.P., a Maryland limited partnership (the "Issuer"). Long-term incentive units receive the same quarterly distributions as common limited partnership units of the Issuer ("Common OP Units"). Long-term incentive units may initially not have full parity with Common OP Units with respect to liquidating distributions; however, upon the occurrence of specified events, long-term incentive units may achieve full parity with Common OP Units for all purposes, and thereafter vested long-term incentive units may be converted into an equal number of Common OP Units on a one-for-one basis at any time. Common OP Units will be redeemable for cash based on the fair market value of an equivalent number of shares of the common stock of Digital Realty Trust, Inc., (the "General Partner") or, at the election of the General Partner, for an equal number of shares of the General Partner's common stock.

2. Represents the unvested portion of a long-term incentive unit award on December 28, 2005. These long-term incentive units vest at a rate of approximately 97 units per month until fully vested.

3. N/A

4. Represents the unvested portion of a long-term incentive unit award on May 2, 2007. These long-term incentive units vest at a rate of approximately 120 units per month until fully vested.

5. Represents the unvested portion of a long-term incentive unit award on May 2, 2007. These long-term incentive units vest at a rate of approximately 672 units per month until fully vested.

6. Represents the unvested portion of a long-term incentive unit award on February 25, 2008. 50% of these long-term incentive units will vest on February 25, 2011 and 50% of these long-term incentive units will vest on February 25, 2012.

7. Represents the unvested portion of a long-term incentive unit award on February 25, 2008. 50% of these long-term incentive units will vest on February 25, 2011 and 50% of these long-term incentive units will vest on February 25, 2012.

8. Represents the unvested portion of a long-term incentive unit award on March 2, 2009. 927 of these long-term incentive units will vest on March 2, 2011, 1,391 of these long-term incentive units will vest on March 2, 2012 and the remaining long-term incentive units will vest on March 2, 2013.

9. Represents the unvested portion of a long-term incentive unit award on March 2, 2009. 742 of these long-term incentive units will vest on March 2, 2011, 1,113 of these long-term incentive units will vest on March 2, 2012 and the remaining long-term incentive units will vest on March 2, 2013.

10. Represents the unvested portion of a long-term incentive unit award on February 23, 2010. 20% of these long-term incentive units will vest on February 23, 2011, 20% of these long-term incentive units will vest on February 23, 2012, 30% of these long-term incentive units will vest on February 23, 2013 and 30% of these long-term incentive units will vest on February 23, 2014.

11. Represents fully-vested long-term incentive units.

Remarks:

This initial statement of beneficial ownership of securities is being filed to report the holdings of the reporting person in connection with Digital Realty Trust, L.P. (the "Issuer") becoming a reporting company. The securities reported herein have been previously reported by the reporting person on reports filed for Digital Realty Trust, Inc., the Issuer's general partner, and do not reflect new transactions in such securities. Exhibit 24: Power of Attorney

	/s/ Barbara Polster, attorney-in-fact	09/08/2010
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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POWER OF ATTORNEY

	KNOW ALL PERSONS BY THESE PRESENTS that each person whose
signature appears below does hereby make, constitute and appoint each of A. William
Stein and Barbara Polster as a true and lawful attorney-in-fact of the undersigned with
full powers of substitution and revocation, for and in the name, place and stead of the
undersigned (both in the undersigned's individual capacity and as an officer or member
of the  board of directors) to execute and deliver such forms as may be required to be
filed from time to time with the Securities and Exchange Commission with respect to any
investments of Digital Realty Trust Inc. (including any amendments or supplements to
any reports from schedules previously filed by such persons or entities) including any
joint filing agreements or joint filer information statements in connection therewith, with
respect to any subsidiary of Digital Realty Trust, Inc.: (i) pursuant to Sections 13(d) and
16(a) of the Securities Exchange Act of 1934, as amended, including without limitation
Schedules 13D and 13G, statements on Form 3, Form 4 and Form 5 and (ii) in connection
with any applications for EDGAR access codes, including without limitation the Form
ID.

	SIGNATURE				TITLE				DATE

/s/Joshua A. Mills		General Counsel		December 28, 2005