Selecting a RAID level and performance tuning

When selecting a RAID level for your system, consider the following.

  Data redundancy Hard-disk- drive capacity utilization Read performance Write performance Built-in spare drive
RAID level-0

No

100% Excellent Excellent No
RAID level-1 Yes 50% Very good Very good No
RAID level 1-Enhanced Yes 50% Very good Very good No
RAID level-5 Yes 67% to 94% * Excellent Good No
RAID level 5-Enhanced Yes 50% to 88% * Excellent Good Yes

* Depending on the number of hard disk drives in the array.