Areca ARC-1882LP Uživatelský manuál stáhnout pdf (Strana 185)

185

APPENDIX

located on the failed drive is reconstructed on the hot spare.

Dedicated hot spare is assigned to serve one specied RAID set.

Global hot spare is assigned to serve all RAID set on the RAID

controller. Dedicated hot spare has higher priority than the global

hot spare. For this feature to work properly, the hot spare must

have at least the same capacity as the drive it replaces. The host

spare function only works with RAID level 1, 1E, 3, 5, 6, 10, 30,

50, or 60 volume set.

The “Create Hot Spare” option gives you the ability to dene a

global/dedicated hot spare disk drive. To effectively use the hot

spare feature, you must always maintain at least one drive that is

marked as a global hot spare.

Important:

The hot spare must have at least the same capacity as the

drive it replaces.

• Hot-Swap Disk Drive Support

The RAID controller chip includes a protection circuit that sup-

ports the replacement of SAS/SATA hard disk drives without hav-

ing 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 controllers 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 recong-

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

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Areca ARC-1882LP Uživatelský manuál Strana 185