You can change the RAID level of an existing logical device. You might want to do this to increase the capacity or performance of a logical device, add redundancy to a logical device, or to make disk drive space available for other uses.
Changing the RAID level normally requires one or more disk drives to be added or removed from the logical device. Adaptec Storage Manager will not allow you to continue unless you have the right number of disk drives available.
When you change the RAID level of an existing logical device, stored data is migrated across existing and new disk drives.
Supported RAID-Level Migrations
From RAID Level |
To RAID Level |
Simple Volume |
RAID 1 |
RAID 0 |
RAID 5 or RAID 10 |
RAID 1 |
Simple Volume, RAID 5, or RAID 10 |
RAID 5 |
RAID 0, RAID 5EE, RAID 10, or RAID 6 |
RAID 6 |
RAID 5 |
RAID 10 |
RAID 0 or RAID 5 |
You can also migrate from RAID 1 or RAID 5 to RAID 0. If the logical device has a spare drive associated with it, the RAID 0 logical device retains the spare drive.
Note! Migrations that do not involve a change in RAID level are also supported in RAID 0, RAID 1, RAID 5, and RAID 6.
To Change the RAID Level of a Logical Device:
In the Logical Devices View, select the logical device you want.
In the Actions menu, click Expand or change logical device.
The wizard opens to the Choose RAID Level window.
Select a new RAID level. (Only supported RAID levels are listed.)
Click Next.
The Modify Logical Device window opens.
If prompted, select additional disk drives to support the new RAID level.
If you want to remove a specific disk drive or segment and replace it with another one (for instance, replace a smaller disk drive with a larger one), click on the disk drive you want to remove.
An X indicates that the selected disk drive will be removed from the logical device, and you are prompted to select another disk drive (of greater or equal size) to replace it.
(optional) Adjust the Advanced Settings, as needed.
Click Next, then review the logical device settings.
To update your logical device immediately, click Apply, then click Yes.
To schedule the changes for later, click Schedule, set the date and time, then click Apply.