Disk Array Controller Board - NEC Express5800/120Rh-2 User Manual
Nec servers user's guide
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Also See for Express5800/120Rh-2:
- User manual (406 pages) ,
- Release note (6 pages) ,
- Datasheet (2 pages)
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Disk Array Controller Board
The disk array controller board is an optional PCI board provided to improve data reliability.
Installing the disk array controller board allows you to use hard disks in the device bays of the
server and those in the optional expansion disk cabinet in the disk 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 electricity from your body before handling the disk
array controller board. Do not touch the disk array controller board
terminals or on-board parts by a bare hand or place the disk array
controller board directly on the desk. For static notes, see the section
"Anti-static Measures" described earlier.
Making hard disks in the disk array configuration or changing the
RAID level initializes hard disks. If the hard disk to be configured
in the array has your valuable data stored, make sure to make a
backup copy of the data before installing 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.,
revolution) for each pack to configure them 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 the parameter [PCI Slot xx ROM] (xx: PCI slot
number).
A disk array configuration of RAID1 or RAID5 increases disk
reliability. However, the actually available capacity becomes smaller
than the total hard disk capacity in the disk array configuration.
Installation
See "PCI Board" for the installation of a disk array controller.
Removal
Remove a disk array controller board in reverse order of the installation steps.
Upgrading Your Server
9-37
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