3ware"s advanced switched RAID architecture - StorSwitch unleashes the power of Serial ATA (SATA) delivering the highest hardware RAID performance in its class. The Escalade 9500S hardware RAID controllers deliver in excess of 400 Mbytes per second (MB/sec) sustained RAID 5 reads and over 100 MB/sec RAID 5 sequential writes with less than 3% CPU utilization (Tested using Intel"s Iometer benchmark program on a dual processor Intel Xeon (2.4GHz) system with PhoenixBIOS 512MBytes system RAM Microsoft Windows 2000 Advanced Server the Escalade 9500S-8 66MHz SATA RAID controller and Maxtor 7Y250MQ 250GB 7200 RPM drives).Primary InformationDevice Type : Storage controller (RAID) Form Factor : plug-in card Interface Type : PCI 64 / 66 MHz Supported Device : Disk array (RAID) Max Storage Devices Qty : 4 Controller Interface Type : Serial ATA-150? Data Transfer Rate : 150 MBps PC Compatibility : PC the Escalade 9500S-8 66MHz SATA RAID controller and Maxtor 7Y250MQ 250GB 7200 RPM drives). Dimensions&MiscellaneousWidth : 7.5 Inch Depth : 2.3 Inch SoftwareSystem Requirements / OS Required : FreeBSD Red Hat Linux SuSe Linux Microsoft Windows 2000 / XP Microsoft Windows Server 2003 Service&SupportService & Support Type : 3 years warranty UNSPSC CodeUNSPSC Code : 43201500 Product IDUPC: 693494950045Manufacturer Part: 9500S-4LP