NEC Express5800/120Lj, User Manual

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9-26 Upgrading Your Server
Disk Expansion Unit
A disk expansion unit is an exclusive device that can install up to 14 hard disk drives. (The number
of hard disk drives depends on the model.) The server containing a Disk Array Controller (N8103-
90) can connect one or two of these devices. For details on the number of devices connected, see the
manuals provided with the Disk Array Controller and disk expansion unit.
IMPORTANT:
A disk expansion unit is provided with no hard disk
drives. You need to purchase hard disk drives separately.
An optional cable may be required to connect with a disk expansion unit. Refer to the manual
coming with the disk expansion unit for details.
After connecting the disk expansion unit, use WebBIOS or Universal RAID Utility to set the disk
expansion unit in a RAID System (RAID0, RAID1, or RAID5). For details on settings and the
setting methods, refer to the manual provided with the board.
While a disk expansion unit is set in a RAID System, you can use the "Auto Rebuild" feature of the
N8103-90 Disk Array Controller to restore data if one of the hard disk drives installed in the disk
expansion unit fails. (Replace the failing hard disk drive while the power is on. (Hot swapping))
IMPORTANT:
When the Disk Array Controller (N8103-90) is
installed, do not let the system enter hibernation or standby mode.