4-36 Upgrading Your SystemDisk Array Configuration of Internal Hard Disk DrivesObserve the following notes on configuring a disk array:! The server must contain more than one SCSI hard disk drive having thesame capacity and the same rotational speed. (The minimum number ofrequired disks depends on the configuration of RAID (Redundant Arraysof Independent Disks).)! Select/set a RAID level "RAID0", "RAID1", "RAID5", or "RAID0+1" ofdisk array configuration.When installing an operating system on an internal hard disk, you shoulduse "Express Setup" to perform all the procedures for RAIDconfiguration, OS installation, and then OS setup.Use Express Setup even when not installing an operating system. StartExpress Setup, select [OS Selection] → [Others]. The installerautomatically performs all the procedures for RAID configuration,maintenance partition setting, and then maintenance utility installation.When manually setting up the server, use the RAID configuration utilityof the array controller. You can start the utility during execution of POSTthat automatically starts immediately after you turn on the server powerswitch. For details, see the online document in the EXPRESSBUILDERCD-ROM provided with the server. (The utility varies depending on thedisk array controller board.) For details on the data transfer rate, RAID,and array configuration, see the manual provided with the disk arraycontroller board as well as the online document.
