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MegaRAID Storage Manager Online Help System |
Rebuilding a Drive
If a single drive in a fault tolerant system fails, the system is protected from data loss by the parity data (in RAID 5, RAID 6, and RAID 50) or by data redundancy (RAID 1, RAID 10). The failed drive must be replaced, and the drive’s data must be rebuilt on a new drive to restore the system to fault tolerance. (Or the data can be rebuilt on the failed drive, if the drive is still operational.) If dedicated or global hot spare disks are available, the failed drive is rebuilt automatically without any user intervention.
If a drive has failed, a red circle appears to the right of the disk drive icon:
. A small yellow circle appears to the right of the icon of the virtual disk that uses this physical disk:
. This indicates that the virtual disk is in a degraded state; the data is still safe, but data could be lost if another drive fails.
Follow these steps if you need to rebuild a physical drive:
- Right click the icon of the failed drive and select Rebuild.
- Click Yes when the warning message appears. If the drive is still good, a rebuild will start.
You can monitor the progress of the rebuild in the Group Show Progress window by selecting Group Operations >> Show Progress. If the drive cannot be rebuilt, an error message appears, and you must replace the drive before a rebuild can occur. Continue with the next step.- Click the icon of the failed drive in the left panel and select the Operations tab in the right panel.
- Select Prepare for Removal and click Go.
- Physically remove the failed drive and replace it with a new drive of equal or greater capacity.
When the new drive spins up, the drive icon should change to green, and the rebuild should begin automatically. You can monitor the progress of the rebuild in the Group Show Progress window by selecting Group Operations >> Show Progress.
If for some reason you want to force a disk drive into Fail status in order to trigger a rebuild, right-click the drive icon, and select Make Drive Offline.
DB09-000202-00 July 2007 Copyright© 2007 by LSI Corporation. All rights reserved. You can find a list of the LSI U.S. distributors, international distributors, sales offices, and design resource centers on the LSI web site at: http://www.lsi.com/cm/ContactSearch.do |