BOULDER, Colo. – April 8, 2008 – A recently released IDC Market Analysis report entitled, "Worldwide Removable Hard Disk Drive 2008-2012 Forecast and Analysis: The Quest for a Viable Tape Replacement," reports that removable disk storage solutions, including ProStor Systems' RDX®-based storage systems, are gaining appreciable momentum as tape replacement at small- and medium-sized businesses (SMBs) worldwide. The report estimates that revenue from removable disk solutions will grow 1,400 percent between 2007 and 2012 to more than $500 million.

IDC categorizes R-HDDs in two major segments: commercial and consumer. In the report, IDC aggregates both commercial and consumer segments for the purposes of market sizing, forecast, and analysis. ProStor Systems' RDX technology is an example of commercial-grade R-HDD, according to the research.

RDX technology is produced under licensing agreements with leading storage developers Tandberg Data and Imation, which allow them to manufacture, market and sell RDX docks and cartridges to OEMs and into end user channels under their own brands. More than 65,000 end users worldwide have deployed 180,000 RDX cartridges to backup their servers and protect their data for the long term.

"Current R-HDD solutions, including RDX technology, are increasingly based on standardized products that allow for data sharing and interchange," said Robert Amatruda, research director, Storage and Enabling Technologies at IDC. "ProStor's approach of driving a de facto industry standard with multiple sources has helped RDX technology gain significant OEM adoption."

From the beginning, RDX technology was designed by ProStor Systems to replace tape technology in backup and archive applications. It uses a rugged, reliable disk cartridge that backs up like a tape drive and features the performance advantages of a disk-to-disk system. Because the RDX cartridge uses industry standard 2.5-inch hard disk drives, capacities increase at the same historical rate of hard disk technology. Using application-based data compression, the capacity of RDX cartridges can double.

"We are pleased that IDC has studied the removable disk drive market with indepth and quality research and that its findings show tremendous growth in the industry," said Steve Georgis, CEO and president of ProStor Systems. "RDX technology has received overwhelmingly positive support from OEM partners, storage software vendors and the general public. We will continue to offer our tape replacement to customers worldwide by providing enterprise-class data protection and performance at an affordable price."

RDX technology provides forward and backward compatibility – allowing users to upgrade to higher capacity cartridges without having to buy a new dock – resulting in a higher return on investment for SMB users. RDX removable disk technology has been certified with most popular SMB backup software and provides traditional drag-and-drop functionality. RDX removable disk technology has been proven to provide long-term preservation of digital data with an archive life of at least 30 years.

Additionally, RDX removable disk technology provides the backbone for ProStor's InfiniVault™ the world's first removable disk archive system that combines the performance and rapid retrieval of conventional hard disk drives with the unlimited capacity, scalability and archive protection of removable media. InfiniVault provides users with a digital archive solution that reduces storage costs by combining long-term data retention, regulatory compliance, automated data archiving and e-discovery protection in a single, simple-to-deploy and easy-to-use appliance.

About ProStor Systems
ProStor Systems is the leader in enterprise-class removable disk storage for data backup and long-term archive. Designed to replace tape, RDX removable disk products provide the performance and reliability of disk while preserving the removability and archival benefits of tape. ProStor has introduced InfiniVault, the world's first removable disk archive system. Targeted at small and mid-sized enterprises with limited budgets, InfiniVault provides low-cost, long-term data preservation in an intelligent regulatorycompliant appliance based on RDX technology. InfiniVault recently won a bronze award as product of the year in the backup and disaster recovery category by Searchstorage.com.

For more information about ProStor Systems or the new InfiniVault, visit http://www.prostorsystems.com or contact the company at info@prostorsystems.com or 303-565-3100. IDC report #210169 was referenced in this press release.