Selecting a RAID level and performance tuning

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

RAID level 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-1E Yes 50% Very good Very good No
RAID level-5 Yes 67% to 94% Excellent Good No
RAID level-5E Yes 50% to 88% Excellent Good Yes
RAID level-00 No 100% Excellent Excellent No
RAID level-10 Yes 50% Very good Very good No
RAID level-1E0 Yes 50% Very good Very good No
RAID level-50 Yes 67% to 94% Excellent Good No

* Disk utilization, read, and write performance depend on the number of drives in the array. Generally, the more drives in the array, the better your performance.