NEC Disk Array Controller N8103-89 - Manual (Page 104)

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1-2. Notes on Creation of Logical Drive
„
Setting hot-spare disk
FastBuild Utility cannot set hot-spare disks. To set hot-spare disks, use the disk
array controller management utility WebPAM after OS is installed.
For free HDDs unassigned to any logical drives, standby rebuild can be done but
media patrol cannot. It is recommended to specify such free HDDs as spare disks
by using WebPAM.
„
Logical drive configuration using split function
The disk array controller can make various logical drive configurations under the
support of the split function. However, note that some configurations may cause
faults to occur. Examples of recommended and unsupported configurations of
logical drives are described below. See the examples before creating logical
drives.
(1) Recommended split configuration
(1-1) Configuration of logical drives in the same RAID level by HDDs having the
same capacity
LD2-3
40GB
LD2-2
40GB
Disk 1
(120GB)
Disk 2
(120GB)
Disk 3
(120GB)
Disk array controller
LD2-1
40GB
LD1-1
80GB
LD1-2
80GB
LD1-3
80GB
RAID5
LD size: 160GB
RAID5
LD size: 80GB