Things to consider when changing the RAID level

 ServeRAID SCSI controllers

If you have a... And you want... Then...
RAID level-0 array with two or more drives RAID level-5 Add one and only one drive

RAID level-1 array with two and only two drives

RAID level-5 Add one and only one drive

RAID level-5 array

RAID level-0 The ServeRAID Manager removes the last drive in the array

RAID level-5 Enhanced array

RAID level-5 The ServeRAID Manager does not add or remove a drive

  ServeRAID SATA and SAS controllers

Note: Not all RAID level migrations are supported by all ServeRAID controllers.

If you have a... And you want... Then...
RAID level-0 logical drive with two or more drives RAID level-5 Add at least one drive

RAID level-5 logical drive

RAID level-0 Optionally, remove one drive

RAID level-0 logical drive

RAID level-10 Double (at least) the drive count
RAID level-6 logical drive RAID level-5 Optionally, remove one drive
RAID level-5 logical drive RAID level-5EE Add at least one drive
RAID level-5 logical drive RAID level-6 Add one or two drives (second drive may be necessary to support N data + 2 parity drives)
RAID level-5EE logical drive RAID level-5 Optionally, remove one drive
RAID level-5 logical drive RAID level-10 Make sure you have (source-1)*2 drives total

RAID level-1 logical drive

RAID level-5 Add at least one drive   only

RAID level-1 logical drive

RAID level-10 Add at least two drives   only

 ServeRAID Enclosures (external RAID storage)

If you have a... And you want... Then...
RAID level-0 logical drive with two or more drives RAID level-5 Add at least one drive

RAID level-1 logical drive

RAID level-5 Add at least one drive

RAID level-1 logical drive

RAID level-10 Add at least two drives in multiples of two

More information


Glossary | Contents

 

x-1013-SRM-00-20-EN