7
Figure 3 Reliability: RAID 1 - Mirroring
Configurations
Recommended configurations
HP recommends factory configurations of the preinstalled RAID offerings for the HP Compaq dc5750
Business PCs.
The preinstalled RAID offering is a RAID 1 volume of two identical SATA hard drives, and either two SATA
80GB/8MB cache, two SATA 160GB/8MB cache, or two SATA 250GB/8MB cache drives.
NOTE: When the HP Compaq dc5750 Business PC products launch, the only supported operating system
is Microsoft Windows XP Professional Service Pack 2 (SP2). RAID Configurations are only supported with
this operating system. Hardware support is present to take advantage of the future Microsoft Vista operat-
ing system.
HP Compaq dc5750 Business PCs are based on the ATI Radeon Xpress 1150 chipset, which is a com-
bined hardware and software RAID solution. The Radeon mass storage controller allows all drives to oper-
ate 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 ATAPI.SYS and ATI driv-
ers for HP Compaq Business PC products, including all supported RAID configurations.
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