Product manual

Galaxy G3G12 / G3G16 - Installation and Hardware Reference Manual
239 Section 7 Technology Background
RAID 0
• • •
RAID 50
•
RAID 10
•
RAID 5
•
RAID 1E
RAID 0
• •
RAID 50
• •
RAID 10
•
RAID 5
• •
RAID 1E
•
RAID 1
RAID 0
• • •
RAID 50
• •
RAID 10
• •
RAID 5
•
RAID 1E
• •
RAID 0
RAID 1
•
* Decreases the existing redundancy
Important
• The Target disk array may require more disk drives than the Source disk array.
• If the Target disk array requires an EVEN number of disk drives but the Source disk
array has an ODD number, ADD a disk drive as part of the migration process.
• You cannot reduce the number of disk drives in your disk array, even if the Target
disk array requires fewer disk drives than the Source disk array.
• RAID 1 (mirroring) works with two drives only. Only a single-drive RAID 0 disk array
or a single-drive JBOD can migrate to RAID 1. Other RAID Levels use too many
drives to migrate.
• You cannot migrate a disk array when it is Critical or performing activities such as
Synchronizing, Rebuilding, and PDM.
• You cannot migrate to RAID 6 or RAID 60. You cannot migrate from RAID 60 to
another RAID level. You must create a new disk array and move your data to it.