The disk storage system market continues to thrive, influenced by expanding markets, desires to improve efficiencies, and moves to enhance the economics of data storage. In 2005, worldwide disk storage system revenue increased 10.5% over 2004 and is expected to continue to expand as terabyte shipments grow more than 50% annually through 2010, IDC forecasts. Worldwide disk storage system revenue will reach $29.8 bln in 2010. Roughly two-thirds of all storage terabytes shipped in 2010 will be based on capacity-oriented disk drives. iSCSI SAN revenue will top $5.1 bln by 2010.