HP 291966-B21 PCI-X / 133 MHz Ultra320 SCSI Smart Array 641 - Storage controller Internal Connectors: 1 x storage - Ultra320 SCSI LVD Transfer Rate: 320 MBps RAID: RAID 0/1/5/10 Cache Memory: 64 MB (installed) / 128 MB (max) Operating Systems Supported: Microsoft Windows NT 4.0, Microsoft Windows 2000 Server, Microsoft Windows 2000 Advanced Server, Novell NetWare 5.x, UnixWare 7.1.1, SCO OpenServer 5.0.5, IBM OS/2 Warp Server, SuSE Linux 7.0, Novell NetWare 6, Red Hat Linux 7.3, Red Hat Linux 8.0, Red Hat Linux Advanced Server 2.1, SCO OpenServer 5.0.7, Microsoft Windows Server 2003, UnixWare 7.1.3 Package Contents: Software Included: Compaq Insight Manager, Compaq Array configuration utility, Compaq Array Configuration Utility XE Parts: 1 year limited Labor: 1 year limited