The Smart Array 6400 high-performance Ultra 320, PCI-X array controller provides maximum performance, flexibility, & reliable data protection for HP Pro Liant servers, through its unique modular design & support for Advanced Data Guarding (RAID ADG). This new generation performance Smart Array controller again raises the standards of performance, introducing Double Data Rate (DDR) battery-backed write cache architecture & a new RAID engine. Designed & tested with industry standard Pro Liant Servers for greater reliability, this controller is ideal for workgroup & departmental servers. & like other Smart Array controllers, the SA-6402 features complete data compatibility with previous generations Smart Array controllers for easy data migration from server to server & for controller upgradeability.