NEW YORK, NY--(Marketwire - June 17, 2009) - Levi & Korsinsky announces that a class action lawsuit has been filed in the Court of the Chancery of the State of Delaware challenging the proposed acquisition of Data Domain, Inc. (“Data Domain” or the “Company”) (NASDAQ: DDUP).

The Complaint arises out of the announcement by Data Domain stating that it had entered into a definitive merger agreement with NetApp, Inc. Under the terms of the proposal, Data Domain's shareholders would receive $30.00 to be paid in a combination of cash and NetApp stock. In addition, NetApp offered positions on its board to certain Data Domain officers and there are rumors that the Data Domain CEO Slootman could be the next CEO of NetApp. This raises questions as to whether the sales process conducted by the Board was fair and open. If you own common stock in Data Domain and wish to obtain additional information, please contact us at the number listed below or visit www.zlk.com/ddup1.html

Levi & Korsinsky has expertise in prosecuting investor securities litigation and extensive experience in actions involving financial fraud and represents investors throughout the nation, concentrating its practice in securities and shareholder litigation.

Contact Information: CONTACT: Levi & Korsinsky, LLP Eduard Korsinsky, Esq. Juan E. Monteverde, Esq. 30 Broad Street -15th Floor New York, NY 10004 Tel: (212) 363-7500 Fax: (212) 363-7171 www.zlk.com