HP Dc7800 AHCI and RAID on HP Compaq dc7800 - Page 12
Purpose, Minimal HDD Required - drivers xp
UPC - 883585764365
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Hardware and firmware support is present to take advantage of the future Microsoft Vista operating system. Intel Matrix Storage Technology RAID software support for Microsoft Vista will be available at a later date. HP Compaq dc7800 Business PCs are based on the Intel Q35/ICH9-DO RAID chipset, which is a combined hardware and software RAID solution. The Intel ICH9-DO SATA mass storage controller allows all drives to operate in IDE or RAID SATA modes. Each mode of the controller means a different PCI controller, with different device ID, class code, and driver support. NOTE: HP recommends and only supports Microsoft's IDE driver stack based on the ATAPI.SYS driver for HP Compaq Business PC products including all supported RAID configurations. WARNING: The PCI Device ID of the mass storage controller changes after changing IDE mode. Changing the BIOS from IDE mode to RAID mode is the equivalent of connecting the hard drives to a new addon RAID storage controller. The installed operating system on the hard drive is unaware of this new mass storage controller. If the operating system does not have the RAID drivers enumerated and PnP for the RAID controller, the operating system will fail to boot (blue screens) when Microsoft XP or Microsoft Vista attempts to boot. Table 5 RAID Drives Mode Purpose Minimal HDD Required RAID 0 Striped for Performance. 2 RAID 1 Mirrored for Protection. 2 RAID 5 Parity for Accuracy. 3 RAID 0 + 1 Mirrored and Striped. 4* Intel's Matrix Technology 4 logical drives on 2 physical disks, 2 to emulate RAID 0 and 1. * Not supported on HP Compaq dc7800 Business PCs. 12