7-44 Upgrading Your System
! Disk array configuration of internal hard disk drives
Observe the following notes on configuring a disk array:
– The server must contain more than one SCSI hard disk drive having the same capacity
and the same rotational speed. (The minimum number of required disks depends on the
configuration of RAID (Redundant Arrays of Inexpensive [Independent] Disks).)
– Select/set a RAID level "RAID0", "RA ID1", "RAID5", or "RAID0+1" of disk ar ray
configuration.
When installing a system in an internal hard disk, you should use "Express Setup" to
perform all the procedures for RAID configuration, OS installation, and then OS setup.
Use Express Setup even when not installing a system. Start Express Setup, select [OS
Selection] → [Others]. The installer automatically performs all the procedures for RAID
configuration, maintenance partition setting, and then maintenance utility installation.
When making the setup in manual mode, use the RAID configuration utility in the chip
on the board. You can start the utility during execution of POST that automatically starts
immediately after you turn on the server power switch. For details, see the online
document in the EXPRESSBUILDER CD-ROM provided with the server. (The utility
varies depending on the disk array controller board.) For details on the data transfer rate,
RAID, and array configuration, see the manual provided with the disk array controller
board as well as the online document.