•Bundled with RR622 RAID controller card for over 250MB/s of RAID 5 performance. •Supports RAID 0, 1, 10, 5, 5+ spare, spanning and JBOD. •Backward compatible with PCIe 1.0. •Supports online expansion to expand capacity without the need to recreate the RAID volume and erase the existing data. •Built-in real time hard drive health monitoring and e-mail notification for critical events. •Supports PC, Linux and MAC OS; including Windows 7 and Snow Leopard. •Accesses eight hard drives using only two cables. •Host interface: eSATA with Port Multiplier. •Drive interface: 8 x 3.5" SATA I / SATA II.