4-32 Upgrading Your SystemDisk Array Controller BoardThe disk array controller board is an optional PCI board provided to improvedata reliability.Installing the disk array controller board allows you to use hard disks in thedevice bays of the server and those in the optional expansion disk cabinet in thedisk array configuration.IMPORTANT:! The disk array controller board is extremely sensitive to static electricity.Make sure to touch the metal frame of the Server to discharge static electricityfrom your body before handling the disk array controller board. Do not touchthe disk array controller board terminals or on-board parts by a bare hand orplace the disk array controller board directly on the desk. For static notes, seethe section "Anti-static Measures" described earlier.! Installing the disk array controller or changing the RAID level initialization ofthe hard disk drives. If the hard disk to be configured in the array has yourvaluable data stored, make sure to make a backup copy of the data beforeinstalling the disk array controller board and configuring the array.! The disk array configuration requires at least two hard disks.! Use hard disks of the same capacity and performance (e.g., RPMs) for eachpack in the array.NOTES:! Before installing a disk array controller board, start the SETUP utility, select[Advanced] → [PCI Configuration], and confirm that [Enabled] is set for theparameter [PCI Slot xx ROM] (xx: PCI slot number).! A disk array configuration of RAID1, RAID5, or RAID0+1 increases diskreliability. However, the available capacity becomes smaller.
