ServeCentric Expands Turn-Key Datacentre(R) Lease With Digital Realty Trust

Managed Services Provider ServeCentric Increases Footprint in Digital Realty Trust Property

DUBLIN, December 1 - Digital Realty Trust, Inc. (NYSE: DLR), the world's largest wholesale
datacentre provider, has completed a new Turn-Key Datacentre(R) lease
agreement with Ireland's leading managed services and data centre operator,
ServeCentric (www.servecentric.com). ServeCentric has experienced increased
demand for managed datacentre services, prompting the company to expand its
footprint within the Digital Realty Trust facility in Dublin.

"We are pleased to be able to provide ServeCentric with the additional
space and flexibility it required to respond to market trends and meet the
increasing demands from its customers," said Brent Behrman, Vice President of
Global Sales of Digital Realty Trust. "This lease agreement is further proof
that Digital Realty Trust is a datacentre infrastructure partner that
companies can rely on for the long term."

"Digital Realty Trust's Turn-Key Datacentre facilities provide us with
state-of-the-art environments for supporting mission critical infrastructure.
As important, we have been able to extend our footprint as and when we have
needed," comments Aidan Donnelly, CEO at ServeCentric. "Leasing space allows
us to move forward without prohibitive capital investment, and the time
required to bring a new data centre online is significantly reduced. As a
result we have been able to react to the market on our terms, and have
simultaneously guaranteed delivery of the best service to our customers."

About Digital Realty Trust, Inc.

Digital Realty Trust owns, acquires, redevelops, develops and manages
technology-related real estate. The Company is focused on providing Turn-Key
Datacentre(R) and Powered Base Building(R) datacentre 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 79 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 datacentre tenants.
Comprising approximately 1.3 million square metres (14.0 million square feet)
as of November 3, 2009, including 177,000 square metres (1.9 million square
feet) of space held for redevelopment, Digital Realty Trust's portfolio is
located in 27 markets throughout Europe and North America. For additional
information, please visit Digital Realty Trust's website at
www.digitalrealtytrust.com.

About ServeCentric

ServeCentric is a wholly owned, private funded, Irish organisation. It
was established in August 2002 and has its headquarters in Blanchardstown
Corporate Park in Dublin. It is currently Ireland's leading managed services
and data centre operator and provides high-quality, scaleable solutions from
single cabinet collocation services to full-scale provision of managed
services.

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. These risks and uncertainties include the impact of the current
deterioration in the global economy, including the turmoil in the financial
and credit markets; the downturn of local economic conditions in our
geographic markets; decreases in information technology spending, including
as a result of economic slowdowns or recession; adverse economic or real
estate developments in our industry or the industry sectors that we sell to;
decreases in real estate valuations and resulting impairment charges; our
dependence upon significant tenants; bankruptcy or insolvency of one or more
major tenants or a significant number of smaller tenants; defaults on or
non-renewal of leases by tenants; our failure to obtain necessary debt and
equity financing for refinancing current debt obligations, undertaking or
completing redevelopment, completing acquisitions or other purposes;
increased interest rates and operating costs; our failure to repay debt when
due or our breach of covenants or other terms contained in our loan
documents; financial market fluctuations; changes in foreign currency
exchange rates; our ability to manage our growth effectively; difficulty
acquiring or operating properties in foreign jurisdictions; our failure to
successfully operate acquired or redeveloped properties; risks related to
joint venture investments, including as a result of our lack of control of
certain of these investments; delays or unexpected costs in development or
redevelopment of properties; decreased rental rates or increased vacancy
rates; increased competition or available supply of data center space;
inability to successfully redevelop and lease new properties and space held
for redevelopment; difficulties in identifying properties to acquire and
completing acquisitions; our inability to acquire off-market properties; our
inability to comply with the rules and regulations applicable to public
companies; our failure to maintain our status as a REIT; possible adverse
changes to tax laws; restrictions on our ability to engage in certain
business activities; environmental uncertainties and risks related to natural
disasters; changes in foreign laws and regulations, including those related
to taxation and real estate ownership and operation; 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 the Company's quarterly reports on Form 10-Q for
the quarters ended March 31, 2009, June 30, 2009 and September 30, 2009. 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 A. Matthews
    Chief Financial Officer and       Director of Investor Relations
    Chief Investment Officer          Digital Realty Trust, Inc.
    Digital Realty Trust, Inc.        +1-415-738-6500
    +1-415-738-6500

    Bernard Geoghegan
    SVP, International Operations
    Digital Realty Trust, Inc.
    +353-1-245-0650

A. William Stein, Chief Financial Officer and Chief Investment Officer, +1-415-738-6500, Pamela A. Matthews, Director of Investor Relations, +1-415-738-6500, or Bernard Geoghegan, SVP, International Operations, +353-1-245-0650, all of Digital Realty Trust, Inc.