User manual

Chapter 8: Troubleshooting
191
Rebuilding a Logical Drive
The remedial action for a Critical logical drive is to rebuild it, meaning the data
from the failed physical drive is rebuilt onto a spare or replacement physical
drive.
Spare Drive Available
The SuperTrak Controller will rebuild a Critical logical drive automatically using a
spare drive, providing:
• A spare drive is available
• The spare drive is the same size or larger than the failed drive
If the above conditions are met, the SuperTrak controller automatically rebuilds
the logical drive with the hot spare. This function is always enabled.
After the rebuild is done, you must replace the failed drive with a new physical
drive.
See “Creating a Spare Drive” on page 78 or page 137. Also see “Hot Spare
Drives” on page 176.
No Spare Drive Available
If a spare drive is not available, you must replace the failed drive. Then the
SuperTrak controller will automatically rebuild the logical drive using the new
physical drive, providing:
• You replace the failed drive with a new drive of the same size or larger
• The Auto Rebuild setting is enabled in WebPAM PRO. Enabled is the default
setting. See “Making Background Activity Settings” on page 107.
Manual Rebuild: SuperBuild Utility
In some cases, you must start the Rebuild manually. After replacing the failed
drive with a new drive of equal or larger size, take the following actions:
1. In the Main Menu, highlight Disk Array Management and press Enter.
The Disk Array Management screen displays.
2. Highlight the Disk Array with the failed drive and press Enter.
The Disk Array Info and Setting screen displays.
3. Highlight Physical Drives in the Array and press Enter.
Note the ID numbers of the physical drives that are still functional
4. Highlight Start Manual Rebuild and press Enter.
The Manual Rebuild screen displays.