Digital Realty Trust Signs Lease Agreement with Terremark for New Build-to-Suit Facility in Amsterdam

New Digital Realty Trust Build-to-Suit Facility to Serve as Terremark's Flagship Datacenter in Europe

SAN FRANCISCO and LONDON, June 21, 2010 - Digital Realty Trust, Inc. (NYSE: DLR), the world's largest wholesale
datacenter provider, has signed a new 15-year lease agreement with an
affiliate of Terremark Worldwide, Inc. (Nasdaq: TMRK) to house Terremark's
Network Access Point (NAP) of Amsterdam in a new build-to-suit project to be
developed by Digital Realty Trust. Digital Realty Trust also announced that
it has entered into a definitive purchase and sale agreement to acquire the
site where the new facility is to be constructed.

"We are pleased to expand our relationship with Terremark to support its
global growth initiatives with this build-to-suit project in Amsterdam,"
commented Michael Foust, Chief Executive Officer of Digital Realty Trust.
"Our ability to provide top tier datacenter facilities in major markets
throughout both North America and Europe makes us the ideal partner for
customers such as Terremark. Collaborating with Digital Realty Trust to
provide the real estate solution allows Terremark to focus on expanding its
managed IT infrastructure services business in Europe."

Through the NAP of Amsterdam, Terremark, a leading global provider of
managed IT infrastructure services, will provide customers with connectivity
from the Amsterdam Internet Exchange (AMS-IX), one of the world's largest
internet exchanges. Terremark's NAP, which is scheduled to be completed in
early 2011, will serve as its flagship European facility and allow Terremark
to offer its full suite of industry-leading services, including cloud
computing and managed hosting, from a new, state-of-the-art facility.

"Once completed, the NAP of Amsterdam will provide our company a highly
sophisticated, top-tier datacenter facility from which to deliver our
acclaimed and highly sought-after suite of services. Our ability to
consistently provide European customers with reliable, world-class IT
infrastructure solutions continues to be a key differentiator for Terremark
and this expertise has proven to be a major factor in our continued success
in the region," said Manuel D. Medina, Terremark's Chairman and CEO. "We're
excited to continue growing our relationship with Digital Realty Trust as we
expand our presence in this key market for our European operations."

For more information about Terremark's NAP of Amsterdam, visit
www.terremark.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(R) and Powered Base Building(R) 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 86 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 15.2 million rentable square feet as of May
25, 2010, including 2.0 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 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, including statements related to the acquisition of the site for
the new facility and the scheduled completion of the new facility. These
risks and uncertainties include, among others, the following: the impact of
the recent deterioration in global economic, credit and market conditions;
current 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 (including risks relating to decreasing
real estate valuations and impairment charges); our dependence upon
significant tenants; bankruptcy or insolvency of a major tenant 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;
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
facilities and agreements; 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 such 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; our
inability to successfully develop 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; potential 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; 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 U.S. Securities and Exchange
Commission, including the Company's Annual Report on Form 10-K for the year
ended December 31, 2009 and the Company's Quarterly Report on Form 10-Q for
the quarter ended March 31, 2010. 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.

Turn-Key Datacenter, Powered Base Building and POD Architecture are
registered trademarks of Digital Realty Trust.

    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

A. William Stein, Chief Financial Officer and Chief Investment Officer, or Pamela A. Matthews, Director of Investor Relations, both of Digital Realty Trust, Inc., +1-415-738-6500