NEC EXPRESS 320Lb-R - Manual (Page 74)

3-2 Linux Setup and Operation
HARD DISK CONFIGURATIONS THAT CAN BE BUILT
ON THE NEC Express5800/ft series
In the NEC Express5800/ft series, all built-in disks need RAID configuration. Configure
RAID 1 using software for the NEC Express5800/ft series.
The hard disks on the same slot location of the PCI module configure RAID. In the
following figure, disks in Slot 1, Slot 2 and Slot 3 of Group 1 are paired with disks in Slot
1, Slot 2 and Slot 3 of Group 2 respectively to configure RAID.
Slots used for mirroring process
Slot 1 Slot 3 Slot 2
Group 2
Group 1
The following indicates the device names of built-in SCSI disks for each SCSI disk slot.
Use these device names for all operations of each built-in SCSI disk.
Slot No of PCI
module
Device name
Slot 1 for Group 1 sda
Slot 2 for Group 1 sdb
Slot 3 for Group 1 sdc
Slot 1 for Group 2 sdd
Slot 2 for Group 2 sde
Slot 3 for Group 2 sdf
IMPORTANT:
When adding disks or reconfiguring RAID, the status of each disk becomes
“RESYNCING” or “RECOVERY”. Do not insert/remove disks, turn off the power, or
restart the system during this status. Wait until the status of “RESYNCING” or
“RECOVERY” is finished. You can check the status of RAID using ftdiskadm
described later. For details, see the separate volume of User’s Guide (Setup).
The SD device, described previously is used to configure RAID 1.
IMPORTANT: Two hard disk drives which configure RAID 1 must have the same
disk capacity. Also, two hard disk drives must have the same logical structure.