Selecting RAID for fault tolerance
If your IT environment requires a high level of fault tolerance, select a RAID level that is optimized for fault tolerance.
This chart shows the relationship between the RAID level fault tolerance and the size of the storage array. The chart includes RAID 0, 1, 5, 50, 10, 6, 60, RAID 1 Triple, and RAID 10 Triple. It also shows the percent reliability in increments between 1 and one billion and the storage array drive increments between 0 and 96.
This chart assumes that two parity groups are used for RAID 50 and RAID 60.
RAID 10 is 30,000 times more reliable than RAID 0.
RAID 10 Triple is 450,000,000 times more reliable than RAID 0.
The fault tolerance of RAID 5, 50, 6, and 60 decreases as the array size increases.