Product manual

Galaxy G3G12 / G3G16 - Installation and Hardware Reference Manual
238 Section 7 Technology Background
7.11 RAID Level Migration
To migrate a disk array is to do one or both:
• Change its RAID level
• Increase the number of disk drives (sometimes called Expansion)
Migration takes place on an existing Functional disk array without disturbing the existing data. While the disk
array is migrating, you can access the data as before. When migration is complete, your disk array will have
a different RAID level and/or a larger capacity.
Different types of disk arrays use different organizational models and have varying benefits. The following
outline breaks down the properties for each type of RAID supported by the Galaxy3G.
Increase Redundancy
From To
Capacity Performance Add Lose
RAID 10
•
RAID 5
•*
RAID 1E
•
RAID 50
RAID 0
• • •
RAID 50
•
RAID 5
•
RAID 1E
•
RAID 10
RAID 0
• • •
RAID 50
• • •*
RAID 10
• • •*
RAID 5
• • •*
RAID 1E
• • •*
RAID 6
RAID 0
• • •
RAID 50
•
RAID 10
• •
RAID 5
RAID 1E
•