Overland Storage SnapServer Administrator's Manual page 125

SnapServer 7.0 Administrator's Guide
NOTE: Disk drives that have been previously configured can be added; they are indicated in the
If there are no errors, after the new disk is incorporated any LEDs are turned off and
statuses are updated.
Traditional RAID Mode
If a disk drive fails, the Administration page displays a Disk Failure message and an icon
with a link to the Disks page.
This section describes how to remove and replace drives in a RAID set of a SnapServer
configured in Traditional RAID mode.
When removing a working disk drive, note the following:
• RAID 0 (nonredundant) set – Removing a disk drive from a RAID 0 set causes the
RAID set to fail. This action renders any data residing on its drives inaccessible and
is not recommended. If a RAID 0 disk drive is inadvertently removed, reinserting it
should restore file access.
• RAID 1, 5, 6, or 10 (redundant) set – Removing a disk drive from a RAID 1, 5, 6, or
10 set places the RAID set into degraded mode. While operating in degraded mode,
users can access or even update data. However, the array loses its redundant
characteristics until all drives of the array are available and operating properly
(except for RAID 6 set, which can tolerate a two-drive failure before it loses
redundancy).
NOTE: If you configure a RAID 1, 5, 6, or 10 set with a spare, the array automatically starts
If a disk drive fails, the Traditional RAID Administration page changes to show the Disk
storage as Degraded and provides a link to the RAID Sets page. Both the RAID Sets and
RAID Sets Properties pages show the degraded status.
NOTE: If a working disk is removed, the same changes occur as when a disk fails.
After a fresh drive is inserted, you must use the Web Management Interface to add it to a
RAID set:
1. Go to Storage > RAID Sets and click the RAID Set name.
2. Click the Repair RAID button.
3. Select a drive from the list shown, and click Repair RAID again to incorporate it into
the RAID as a replacement for a failed member drive.
10400317-001 10/2011
Storage > Disks
list by the
been used in a different system. If you want to use the drive, add it to the RAID as you
would any other drive.
rebuilding with the spare when one of the disk drives fails or is removed.
©2010-11 Overland Storage, Inc.
icon and a message stating that the disk has previously
6 – Other Storage Options
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