Digital Realty Trust, Inc. Receives a Baa2 Issuer Rating From Moody's Investors Service

SAN FRANCISCO, Oct. 29 /PRNewswire-FirstCall/ -- Digital Realty Trust, Inc. (NYSE: DLR), the leading owner and manager of corporate and Internet gateway datacenter facilities, today announced that the Company was assigned a Baa2 issuer rating by Moody's Investors Service.

According to the Moody's press release, the Baa2 issuer rating reflects Digital Realty Trust's well-leased portfolio with consistently high occupancy in the mid-90% range (excluding space held for redevelopment), laddered lease rollover, and solid historical same-store NOI growth. In addition, the rating agency stated that the stable rating outlook was based on Digital's good franchise, steady historical earnings and sound capital structure, as well as its solid management team. It also reflects Moody's expectation that Digital Realty will maintain its profitability in the near-to-medium term, and that its debt protection measures will at least remain at current levels.

A. William Stein, CFO and Chief Investment Officer, commented, "As we await ratings from the other agencies, this Baa2 rating from Moody's is an important first step for Digital Realty Trust towards accessing the investment grade unsecured debt market, an important component of our future funding strategy that we believe will further differentiate us from our competitors."

More information regarding Digital Realty Trust's rating assignment can be found in the Moody's Investors Service press release dated October 29, 2009 on its website at www.moodys.com.

About Digital Realty Trust, Inc.
Digital Realty Trust, Inc. owns, acquires, redevelops, develops and manages technology-related real estate. The Company is focused on providing Turn-Key Datacenter® and Powered Base Building® datacenter solutions for domestic and international tenants across a variety of industry verticals ranging from information technology and Internet enterprises, to manufacturing and financial services. Digital Realty Trust's 78 properties, excluding one property held as an investment in an unconsolidated joint venture, contain applications and operations critical to the day-to-day operations of technology industry tenants and corporate enterprise datacenter tenants. Comprising approximately 13.8 million rentable square feet as of September 30, 2009, including 1.9 million square feet of space held for redevelopment, Digital Realty Trust's portfolio is located in 27 markets throughout North America and Europe. For additional information, please visit Digital Realty Trust's website at http://www.digitalrealtytrust.com.

Safe Harbor Statement
This press release contains forward-looking statements which are based on current expectations, forecasts and assumptions that involve risks and uncertainties that could cause actual outcomes and results to differ materially. Such forward looking statements include statements related to the Company's occupancy and tenant rollover rates, lease expirations at the Company's properties, the ability of the Company to maintain its profitability and maintenance of the Company's debt protection measures. These risks and uncertainties include the impact of the current deterioration in global economic and market conditions; adverse economic or real estate developments in our markets or the industry sectors that we sell to; decreases in information technology spending; our dependence upon significant tenants; bankruptcy or insolvency of a major tenant or a significant number of smaller tenants; downturn of local economic conditions in our geographic markets; our inability to comply with the rules and regulations applicable to public companies or to manage our growth effectively; difficulty acquiring or operating properties in foreign jurisdictions; defaults on or non-renewal of leases by tenants; increased interest rates and operating costs; our failure to obtain necessary outside financing; restrictions on our ability to engage in certain business activities; risks related to joint venture investments; decreased rental rates or increased vacancy rates; inability to successfully develop and lease new properties and space held for redevelopment; difficulties in identifying properties to acquire and completing acquisitions; increased competition or available supply of data center space; our failure to successfully operate acquired properties; our inability to acquire off-market properties; delays or unexpected costs in development or redevelopment of properties; our failure to maintain our status as a REIT; possible adverse changes to tax laws; environmental uncertainties and risks related to natural disasters; financial market fluctuations; changes in foreign currency exchange rates; changes in foreign laws and regulations, including those related to taxation and real estate ownership and operation; and changes in real estate and zoning laws and increases in real property tax rates. For a further list and description of such risks and uncertainties, see the reports and other filings by the Company with the United States Securities and Exchange Commission, including the Company's annual report on Form 10-K for the year ended December 31, 2008 and subsequent reports on Form 10-Q and Form 8-K. The Company disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

    For Additional Information:

    A. William Stein                Pamela Matthews
    Chief Financial Officer and     Director of Investor Relations
      Chief Investment Officer      Digital Realty Trust, Inc.
    Digital Realty Trust, Inc.      +1 (415) 738-6532
    +1 (415) 738-6520