Data Domain Joins SNIA Europe

Market Wire, May, 2008

Data Domain (NASDAQ: DDUP), the leading provider of deduplication storage systems, today announced that it has joined the Storage Networking Industry Association (SNIA) Europe. As part of the association Data Domain will work with SNIA Europe and its members to help develop best practices and educate the market about all aspects of data deduplication technologies. Data Domain will be also participating in SNIA Europe events, including today's SNIA Europe Academy in London.

"The European IT market is important to Data Domain's continued growth," said Beth White, Vice President of Marketing for Data Domain. "Joining SNIA Europe will provide Data Domain additional exposure to the local end users and resellers. It is important that vendors, resellers and end users collaborate to exchange knowledge and share experience around new technologies. Data Domain looks forward to continuing to educate the European market about data deduplication and how to select and deploy storage products most suitable to end user data protection requirements."

With an expanding team and a growing list of customers in Europe, Data Domain is already involved with SNIA in the creation of whitepapers on data deduplication technology and is supporting SNIA Europe events with educational presentations based on data protection.

"Data deduplication is one of the hottest technologies around and I am pleased to welcome Data Domain to SNIA Europe," said Juergen Arnold, SNIA Europe's Chairman. "Since the beginning of this year our Academy events have been featuring sessions on data deduplication because there is a great demand for unbiased education about this technology. I am confident this partnership will be beneficial to the association, to Data Domain and to the industry overall."

ABOUT DATA DOMAIN

Data Domain® is the leading provider of deduplication storage systems. Over 1800 companies worldwide have purchased Data Domain systems to reduce storage costs and simplify data management. Data Domain delivers the performance, reliability and scalability to address the data protection and nearline storage needs of enterprises of all sizes. Data Domain products integrate into existing customer infrastructures and are compatible with leading enterprise backup and archive software products. To find out more about Data Domain, visit www.datadomain.com . Data Domain is headquartered at 2421 Mission College Blvd., Santa Clara, CA 95054 and can be contacted by phone at 1-866-933-3873 or by e-mail at sales@datadomain.com .

Data Domain, the Data Domain logo and Global Compression are trademarks or registered trademarks of Data Domain, Inc. All other trademarks used or mentioned herein belong to their respective owners.

Contact: Federica Monsone A3 Communications 44 (0) 1252 875 203 fred.monsone@a3communications.co.uk Ed Luboja Data Domain, Inc. 1.914.698.1346 edward.luboja@datadomain.com