Smartstor Responds To A Critical Raid Volume; Responding To An Invalid Raid Volume - Promise Technology SmartStor NS4300N Product Manual

SmartStor NS4300N Product Manual
Figure 2. PASM reports a Critical RAID Volume

SmartStor Responds to a Critical RAID Volume

How the SmartStor responds to a Critical RAID Volume depends on the RAID
level of your Volume and whether you have a spare drive available:
• For a RAID 1 Volume or a three-drive RAID 5 Volume, if a spare drive is
available, the RAID Volume begins rebuilding itself automatically.
• For RAID 1, 5, and 10 Volumes, when no spare drive is available, you must
replace the failed disk drive. The RAID Volume will begin rebuilding itself
when you install the new disk drive. See "Replacing a Failed Disk Drive" on
page 117.
• RAID 0 Volumes go offline after a disk drive failure. A RAID 0 Volume cannot
be rebuilt. All data on the Volume is lost.
Additional Details about Rebuilds
• The Rebuild takes several minutes, depending on the size of your disk
drives.
• During a rebuild, you can access your folders on the SmartStor.
• When you replace the failed disk drive with a new disk drive, the new disk
drive becomes a Free Drive.

Responding to an Invalid RAID Volume

The SmartStor considers a RAID Volume invalid when the RAID Volume was
created by a different SmartStor. However, the RAID Volume itself remains
functional and the data on it is safe.
This condition could happen when you:
• Move the disk drives from one SmartStor to a different SmartStor.
• Remove the disk drives in order to send your SmartStor for service.
RAID Critical icon
118
Rebuild in
progress