SmartStor NAS User Manual
A more serious but far less common problem is an Incomplete Array. An
incomplete disk array results from a physical drive that fails or becomes
missing during:
− RAID level migration
− Physical drive transport
3.4.4 Spare Drive Management
If you have an unassigned disk drive, you can assign it as a spare drive. A
spare is a disk drive that has been designated to replace a failed disk drive in
a RAID Volume. In the event of the failure of a disk drive within a RAID 1 or
three drive RAID 5 Volume, the spare drive is activated as a member of the
RAID Volume to replace a disk drive that has failed.
A spare drive cannot replace the failed drive in a RAID 0 Volume because of
the way in which data is written to the disk drives under RAID 0. A spare drive
is not available for a RAID 10 Volume because RAID 10 requires all four disk
drives in the SmartStor enclosure. However, when you replace the failed disk
drive, the SmartStor will automatically rebuild the RAID Volume using the new
disk drive.
To assign a spare drive:
1. Click Storage tab > Spare Drive. The list of spare drives appears.
2. Move your mouse over the spare drive you want to display the options of
the spare drive, including:
− ID
− Status – Green, yellow or red icon.
− Capacity – Data capacity of the spare drive.
− Physical Drive ID
− Revertible
− Type
− Dedicated to Array
3. When done, click the Confirm button.
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