Promise Technology Pegasus R6 - Page 93

Chapter 4: Technology Background
85
RAID 0
A RAID 0 source logical drive can migrate to the following target logical drives:
See “Migrating a Logical Drive” on page 65.
RAID 1
A RAID 1 Source logical drive can migrate to the following Target logical drives:
See “Migrating a Logical Drive” on page 65.
Target Requirements
RAID 0 Add physical drives.
RAID 1 2 physical drives only.
Only a single-drive RAID 0 can migrate to RAID 1 by adding 1
physical drive.
RAID 1E 3 or more physical drives.
If existing physical drives have no unused space, add 1 or
more physical drives.
RAID 5 3 physical drives minimum, maximum 4 (R4) or 6 (R6).
RAID 0 must have less than 4 (R4) or 6 (R6) physical drives.
If existing physical drives have no unused space, add 1 or
more physical drives.
RAID 6 4 physical drives minimum, 4 (R4) or 6 (R6).
If existing physical drives have no unused space, add 1 or
more physical drives.
RAID 10 4 physical drives minimum. Even number of physical drives.
If existing physical drives have no unused space, add 1 or
more physical drives.
Target Requirements
RAID 0 None.
RAID 1E 3 or more physical drives.
Add 1 or more physical drives.
RAID 5 3 physical drives minimum, 4 (R4) or 6 (R6).
RAID 1 must have less than 4 (R4) or 6 (R6) physical drives.
Add 1 or more physical drives.
RAID 10 4 physical drives minimum. Even number of physical drives.
Add 2 or more physical drives.