Archive for July 6th, 2009
RAID5 backup, why bother?
July 6th, 2009 | Author: Mark
RAID 5 combines capacity and performance with fault-tolerance, a disk can fail and the RAID will keep on going, so does this mean that there is no need for backup? Is RAID 5 data recovery never going to be a requirement?
Some people seem to think so, but have been dangerously mis-informed. The error correction used in a RAID5 array is there to provide a level of protection for what will often be business critical data, but can still only survive the loss of a single hard drive from the array. Even RAID 6 with double error correction can only cope with a failure of two drives.
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