Digital Realty announces closing of common stock offering

SYDNEY, July 4, 2012. Digital Realty Trust, Inc. (the ‘Company’ or ‘Digital Realty’) (NYSE: DLR) today announced the closing of a public offering of 11,500,000 shares of its common stock, including 1,500,000 shares issued upon exercise of the underwriters' option to purchase additional shares, which was exercised in full, at a price of $US72.25 per share, for net proceeds of approximately $US796.8 million after deducting underwriting discounts and commissions and estimated offering expenses.

All of the shares were offered by Digital Realty and were issued under Digital Realty's currently effective shelf registration statement filed with the Securities and Exchange Commission.

Digital Realty intends to contribute the net proceeds from the offering to its operating partnership, Digital Realty Trust, L.P., which intends to use the net proceeds from the offering to fund a portion of the purchase price for the acquisition of a three-property data centre portfolio located in the greater London area, referred to as the Sentrum Portfolio, or to temporarily repay borrowings under its global revolving credit facility, to acquire additional properties, to fund development and redevelopment opportunities, for general working capital purposes, including potentially for the repurchase, redemption or retirement of outstanding debt or preferred securities, or a combination of the foregoing.

BofA Merrill Lynch, Citigroup, Credit Suisse, Deutsche Bank Securities, Goldman, Sachs & Co., J.P. Morgan and Morgan Stanley served as joint book-running managers for the offering. A final prospectus supplement related to the public offering has been filed with the Securities and Exchange Commission. Copies of the final prospectus supplement may be obtained from BofA Merrill Lynch, 222 Broadway, 7th Floor, New York, NY 10038, Attn: Prospectus Department (email: dg.prospectus_requests@baml.com); or Citigroup, Brooklyn Army Terminal, 140 58th Street, 8th floor, Brooklyn, NY 11220 (telephone: 1-800-831-9146 or email: batprospectusdept@citi.com).

About Digital Realty

Digital Realty Trust, Inc. focuses on delivering customer driven data centre solutions by providing secure, reliable and cost effective facilities that meet each customer's unique data centre needs. Digital Realty's customers include domestic and international companies across multiple industry verticals ranging from information technology and Internet enterprises, to manufacturing and financial services. Digital Realty's 105 properties, excluding three properties held as investments in unconsolidated joint ventures, comprise approximately 20.0 million square feet as of June 22, 2012, including 2.3 million square feet of space held for redevelopment. Digital Realty's portfolio is located in 31 markets throughout Europe, North America, Singapore and Australia.

For Additional Information

A. William Stein Chief Financial Officer Digital Realty Trust, Inc. +1 (415) 738-6500

Pamela M. Garibaldi Vice President, Investor Relations, and Chief Investment Officer Corporate Marketing Digital Realty Trust, Inc. +1 (415) 738-6500