# Things to consider when changing the RAID level

If you have a... | And you want... | Then... | And in the ServeRAID Manager...
RAID level-0 array with two or more drives | RAID level-5 | Add one and only one drive | Use the Configuration wizard to define the physical drive that you are adding to the array.
RAID level-1 array with two and only two drives | RAID level-5 | Add one and only one drive | Use the Configuration wizard to define the physical drive that you are adding to the array.
RAID level-5 array | RAID level-0 | The ServeRAID Manager removes the last drive in the array | Review the configuration summary pane to apply the RAID level change. The ServeRAID Manager automatically removes the last physical drive from the array.
RAID level-5 Enhanced | RAID level-5 | The ServeRAID Manager does not add or remove a drive | Use the summary pane to confirm the RAID level change.

## More information

- Changing the RAID level (action)
- Understanding logical-drive migration

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