Promise Technology Pegasus3 R4 - Page 186

173
Technology BackgroundPegasus3 Product Manual
RAID 1
A RAID 1 Source logical drive can migrate to the following Target logical drives:
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), 6 (R6) or 8 (R8).
RAID 0 must have less than 4 (R4), 6 (R6) or 8 (R8) physical drives. If existing
physical drives have no unused space, add 1 or more physical drives.
RAID6
4 physical drives minimum, 4 (R4), 6 (R6) or 8 (R8).
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.
RAID50
6 physical drives minimum.
RAID60
8 physical drives minimum.
See “Migrating a Logical Drive” on page 144.
RAID 0
A RAID 0 source logical drive can migrate to the following target logical 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, maximum 4 (R4), 6 (R6) or 8 (R8).
RAID 1 must have less than 4 (R4), 6 (R6) or 8 (R8) 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.
RAID50
6 physical drives minimum.
See “Migrating a Logical Drive” on page 144.