2
2-18
EMCFib re Channel Storage-System Configuration Planning
RAID Types and Tradeoffs
Use a RAID0 Group (nonredundant individual access array) for
applications where
•High availability is not important
•Overall performance is very important
Use an individual unit for applications where
•High availability is not important
•Speed of write access is somewhat important
Use a hot spare where
•In any RAID 5, RAID 3, RAID 1/0 or RAID 1 Group, high
availability is so important that you want to regain data
redundancy quickly without human intervention if any disk in
the Group fails
•Minimizing the degraded performance caused by disk failure in a
RAID 5 or RAID 3 Group is important