If a drive in a mirrored virtual drive (RAID 1 or RAID 1E) fails, MegaRAID Storage Manager software automatically rebuilds the data on a hot spare drive to prevent data loss.
The rebuild is a fully automatic process, so it is not necessary to issue a Rebuild command. You can monitor the progress of drive rebuilds in the Group Show Progress window. To open this window, select
Group Operations>>Show Progress.
A failed drive must be replaced, and the data on the drive must be rebuilt on a new drive to restore the system to fault tolerance. (You can choose to rebuild the data on the failed drive if the drive is still operational.) If hot spare drives are available, the failed drive is rebuilt automatically without any user intervention.
A red circle to the right of the drive icon
indicates that a drive has failed. A yellow circle appears next to the icon of the virtual drive that uses this drive. This indicates that the virtual drive is in a degraded state; the data is still safe, but data could be lost if another drive fails.
You can monitor the progress of the rebuild in the Group Show Progress window by selecting Manage>>Show Progress. If the drive cannot be rebuilt, an error message appears. Continue with the next step.
When the new drive spins up, the drive icon changes back to normal status, and the rebuild process begins automatically. You can monitor the progress of the rebuild in the Group Show Progress window by selecting
Manage>>Show Progress.
If you want to force a drive into Fail status in order to trigger a rebuild, right-click the drive icon, and select Make Drive Offline. A red circle appears next to the drive icon. Right-click the icon and select
Rebuild from the pop-up menu. A drive rebuild cannot be aborted.