Digital Realty Trust Launches Two New Customer Service Initiatives

Customer Portal Provides Customers with Real-Time Operational Data and Other Facility Management Information via Web-Based Interface

DUBLIN, December 15 - Digital Realty Trust, Inc. (NYSE: DLR), the world's largest wholesale
data centre provider, has launched two new customer service initiatives. The
first, a new customer service web portal called Digital Realty Trust
Connection, provides customers with critical, real-time operational
information about their data centres as well as enhanced access to 24/7
support services from Digital Realty Trust.

The new portal provides secure access to operational data such as
standardised forms, customer documentation, and the latest operational
notices for Digital Realty Trust facilities. The portal also enables
customers to access our Critical Facilities Management system from any
computer as well as produce a variety of customisable reports about their
data centres. Through the portal, customers can also submit customer service
requests directly to Digital Realty Trust 24/7 and track the status of
service requests as they progress through the system. Access to the Digital
Realty Trust Connection portal is free to all Digital Realty Trust customers.
Digital Realty Trust's Customer Service organisation is in the process of
deploying the system to all existing customer and facilities portfolio-wide.
It is anticipated that the application will be fully deployed before the end
of the year.

"This free portal gives our customers the ability to proactively manage
their data centre operations using a secure, easy-to-use web interface that
puts a wealth of information at their fingertips. This will be a valuable
tool for all of our customers, and particularly for those that have more than
one data centre with us across different buildings or cities," said Dave
Caron, Senior Vice President at Digital Realty Trust. "We are always seeking
new ways of improving service to our customers and providing them with more
tools and data for managing their data centres. This new portal is a key part
of that commitment. We expect it to become a centerpiece of our customers'
data centre management process."

The second initiative is Digital Realty Trust's new Customer Support
Centre (CSC), which provides 24/7 customer support. Digital Realty Trust's
team of Service Support Technicians at the CSC route all incoming inquiries
to the appropriate internal contacts. In addition, the CSC will monitor the
queue of the new "Digital Realty Trust Connection" customer web portal to
assure new requests are directed to the correct sites in a timely manner.

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 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 14.0 million rentable square feet as of
November 3, 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 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 expected deployment timing
for its new service offerings. 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 centre 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.

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

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

A. William Stein, Chief Financial Officer and Chief Investment Officer, +1-415-738-6500, or 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.