“Our DataDomain unit has significantly reduced our backup and restore burden. Tape usage, which previously required weekly manual intervention, is now reduced to an occasional rotation for off-site storage. Even with our wide variety of data, including everything from e-mail to already compressed data sets, we are seeing an aggregate 10x compression ratio. The increased capacity and flexibility our DataDomain unit provides allows us more backup options for our departmental users and has made backups and restores an order of magnitude faster.” — Scott Karlin
Manager, Computing Facilities, Department of Computer Science, Princeton University

Press Release

Data Domain Ranked Both Highest In-Use and Highest In-Plan Deduplication Vendor at Fortune 1000 Enterprises

New TheInfoProT Storage Wave 10 End User Study Points to Increased F1000 Spending on Data Deduplication

SANTA CLARA, Calif. — November 27, 2007 —Data Domain, a leading provider of Deduplication Storage systems, today announced results from the TheInfoPro's new Wave 10 Storage End User Study that cited Data Domain as both the top in-use and top in-plan Data Deduplication vendor at Fortune 1000 Enterprises. In addition, the new study also revealed that Data Deduplication technology has retained the top spot on the TheInfoPro's Fortune 1000 Storage Networking Technology Heat Index®, which gauges immediacy of user needs and planned spending for each technology.

TheInfoPro (TIP) is an independent research network and leading supplier of market intelligence for the Information Technology (IT) industry. TIP's Storage Study details technology adoption trends and timeframes, management techniques, and vendor performance data for the Storage industry.

Robert Stevenson, Managing Director of Storage Research for TheInfoPro, said "After first rising to the top of our Technology Heat Index in our Spring 2007 Wave 9 Storage Study, Data Deduplication is still leading the pack in terms of immediacy of need and planned spending in Fortune 1000 enterprises. In the previous Wave 9 study, Data Domain was the in-use leader. Our new Wave 10 study shows that, in addition to remaining the lead in-use deduplication vendor, Data Domain is now also the lead in-plan vendor. This reflects building momentum for both data deduplication technology and for Data Domain with these users."

Additional results from TheInfoPro's new Wave 10 Storage End User Study include:

  • 75% of Fortune 1000 enterprises interviewed are either using, piloting, or have data deduplication in near or long-term spending plans.

  • At a company level, Data Domain was the only vendor to receive the highest possible rating for Delivery as Promised, Technical Innovation and Strategic Vision, and it scored the highest of all rated vendors in Value for Money.

  • Data Domain was the only technology vendor in the study that received the highest possible rating across all 5 product rating categories: Interoperability, Features/Functions, Product Quality, Product Performance and Product Reliability.

  • 0% of those interviewed indicated that they "would definitely consider switching from Data Domain." Data Domain was the only vendor to sustain this loyalty.
"TheInfoPro's new Wave 10 Storage Study shows both Data Deduplication's segment momentum in the storage market, and Data Domain's leadership position," said Brian Biles, Vice President of Product Management for Data Domain. "There's a big gap between many vendors' intentions in deduplication storage and the customer satisfaction they deliver. As TheInfoPro shows, Data Domain is providing leadership where it counts-in deployment."

For more information about Data Domain's Deduplication Storage systems, please visit www.datadomain.com.

ABOUT THEINFOPRO
TheInfoPro (TIP) is an independent research network for the Information Technology (IT) industry. Through a peer network of over 1600 of the world's largest buyers and users of IT, including Citigroup, FedEx, McGraw-Hill, MasterCard, Pfizer, Vodafone, PepsiCo, JPMorgan Chase, and Harvard University, TIP delivers detailed budget, vendor performance and technology roadmap data without spin or bias. Known as the "voice of the customer," TIP helps IT professionals, technology providers, and institutional investors make sound decisions on technologies, vendor relationships and investments. Founded in 2002 by alumni of Gartner, Giga, EMC, and Bell Labs, TIP is headquartered in New York City, with offices in San Francisco, Chicago, and Boston. To learn more, visit www.theinfopro.net or call 1-212-672-0010.

ABOUT DATA DOMAIN
Data Domain® is a leading provider of Deduplication Storage systems for a broad range of nearline storage applications including disk backup, archiving and network-based disaster recovery. Over 1,200 companies worldwide have purchased Data Domain's storage systems to reduce costs and simplify data management. Data Domain delivers the performance, reliability and scalability to address the data protection needs of enterprises of all sizes. Data Domain's products integrate into existing customer infrastructures and are compatible with leading enterprise backup 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.

FORWARD-LOOKING STATEMENTS
This press release contains forward-looking statements that involve risks and uncertainties, as well as assumptions that, if they do not fully materialize or if they prove incorrect, could cause our results to differ materially from those expressed or implied by such forward-looking statements. Such forward-looking statements include statements regarding our expectations, beliefs, intentions or strategies regarding the future, such as statements regarding planned spending of Fortune 1000 enterprises on deduplication storage systems and in-plan spending on Data Domain products, our products' ability to reduce the amount of stored back-up data and associated storage costs and to provide faster access to data and advanced levels of data protection; and other statements that can be identified by forward-looking words such as "anticipated," "believed," "could," "estimate," "expect," "intend," "may," "should," "will" and "would" or similar words. The risks and uncertainties that could cause our results to differ materially from those expressed or implied by such forward-looking statements include our ability to react to trends and challenges in our business and the markets in which we operate; our ability to anticipate market needs or develop new or enhanced products to meet those needs; market acceptance of our products; our ability to scale our distribution channels; our ability to compete in our industry; our ability to maintain and expand relationships with technology partners; our ability to recruit and retain qualified personnel and manage our growth; our ability to maintain effective internal controls; our dependence on a single product line; our ability to protect our intellectual property; claims by others that we may infringe their intellectual property; our dependence on sole or limited source suppliers; the ability of our contract manufacturer to perform as we expect; general political, economic and market conditions and events; and other risks and uncertainties described more fully in our documents filed with or furnished to the Securities and Exchange Commission. All forward-looking statements in this press release are based on information available to us as of the date hereof, and we assume no obligation to update these forward-looking statements.

Note: 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 Information

Data Domain

Edward Luboja
914-698-1346
press@datadomain.com

Lois Paul and Partners

Christen Rice
781-782-5869
christen_rice@lpp.com