APPENDIX
151
matically take its place and he data previously located on the
failed drive is reconstructed on the Global Hot Spare.
For this feature to work properly, the global hot spare must have
at least the same capacity as the drive it replaces. Global Hot
Spares only work with RAID level 1, 10(1E), 3, 5, and 6 volume
set. You can configure up to three global hot spares with RAID
subsystem.
The “Create Hot Spare” option gives you the ability to define
a global hot spare disk drive. To effectively use the global hot
spare feature, you must always maintain at least one drive that is
marked as a global spare.
Important
:
The hot spare must have at least the same capacity as the
drive it replaces.
•
Hot-Swap Disk Drive Support
The RAID subsystem chip includes a protection circuit that sup-
ports the replacement of SATA hard disk drives without having to
shut down or reboot the system. A removable hard drive tray can
deliver “hot swappable” fault-tolerant RAID solutions. This feature
provides advanced fault tolerant RAID protection and “online”
drive replacement.
•
Auto Declare Hot-Spare
If a disk drive is brought online into a system operating in de-
graded mode, the RAID subsystems will automatically declare the
new disk as a spare and begin rebuilding the degraded volume.
The Auto Declare Hot-Spare function requires that the smallest
drive contained within the volume set in which the failure oc-
curred.
In the normal status, the newly installed drive will be reconfig
-
ured an online free disk. But, the newly-installed drive is auto-
matically assigned as a hot spare if any hot spare disk was used
to rebuild and without new installed drive replaced it. In this
