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Follow these steps to scan for a foreign configuration:
1. Select a controller icon in the left panel of the MegaRAID Storage Manager window.
2. Select Go To->Controller->Scan for Foreign Configuration.
If the MegaRAID Storage Manager software detects any new drives, it displays a list of them
on the screen. If not, it notifies you that no foreign configuration is found.
3. Follow the instructions on the screen to complete the drive detection.
Rebuilding a Drive
If a drive in a redundant virtual drive (RAID 1, 5, 6, 10, 50, or 60) fails, the 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.
If a single drive in a RAID 1, RAID 5, RAID 10, or RAID 50 virtual drive fails, the system is
protected from data loss. A RAID 6 virtual drive can survive two failed drives. A RAID 60 virtual
drive can survive two failed drives in each span in the drive group. Data loss is prevented by using
parity data in RAID 5, RAID 6, RAID 50, and RAID 60, and data redundancy in RAID 1 and
RAID 10.
The 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. (Or the data can be rebuilt on the failed drive, if the drive is
still operational.) If dedicated hot spares or global hot spare disks are available, the failed drive is
rebuilt automatically without any user intervention.
A red circle to the right of the drive icon
appears to the right of the icon of the virtual drive that uses this drive which indicates that the
virtual drive is in a degraded state; the data is still safe, but data could be lost if another drive fails.
Follow these steps to rebuild a drive:
1. Right-click the icon of the failed drive and select Rebuild.
2. 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
Manage->Show Progress. If the drive cannot be rebuilt, an error message appears. Continue
with step 3.
3. Shut down the system, disconnect the power cord, and open the computer case.
4. Replace the failed drive with a new drive of equal capacity.
5. Close the computer case, reconnect the power cord, and restart the computer.
6. Restart the MegaRAID Storage Manager software.
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 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.
Maintaining and Managing Storage Configurations
DB09-000202-05 37857-02
Rev. F - May 2011
Copyright © 2011 by LSI Corporation. All rights reserved.
indicates that a drive has failed. A yellow circle
Page 95
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