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You can change RAID levels without degrading the RAID subsystem. For example, you can
convert a degraded RAID 1, RAID 3, or RAID 5 logical drive to an Optimal RAID 0 logical
drive. After you select the degraded logical drive to be optimized, the software reconstructs
the RAID subsystem without halting the system.
NOTE
You can also convert a RAID 3 logical drive to a RAID 5 logical drive or vice versa.
The following table lists the RAID level change paths.
If RAID system is...
You can change to...
When You...
RAID 3 or RAID 5 Optimal
RAID 3 or RAID 5 Optimal
Add drives.
RAID 3 or RAID 5 Optimal
RAID 0
Stop parity.
RAID 3 or RAID 5 Optimal
RAID 0
Delete a drive, or add drives.
RAID 3 or RAID 5
RAID 0 Optimal
If a drive fails, you can
configure an Optimal RAID
0 system.
RAID 1 Optimal
RAID 3 or RAID 5 Optimal
Add drives.
RAID 1 Optimal
RAID 0
Add drives or delete a drive.
RAID 1 Degraded
RAID 0
If a drive fails, you can
configure an Optimal RAID
0 system.
RAID 0
RAID 3 or RAID 5 Optimal
Add drives.
RAID 0
RAID 1 Optimal
Add a drive.
RAID 0
RAID 0
Add drives.
CAUTION
Once you start an operation, no other operation can be started until the present operation
completes.
To change a RAID level:
1. From MegaRAID Power Console, place the cursor on the logical drive for which you
want to change the RAID level, and click the right mouse button.
2. Select Advanced Menu from the Logical Drive menu.
3. Select Change Config
.
The following dialog displays:
Summary of Contents for InterRAID-12
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