RAID (redundant array of independent disks) is a performance enhancing method of spreading or duplicating data across multiple drives. It is a method of using several tape drives that are grouped together to provide fault-tolerance in the event that one or more drives or media fail.
Because multiple tape drives increase the mean time between failures (MTBF), storing data redundantly increases fault-tolerance and, in some scenarios, achieves faster data throughput.
Note: Throughput increases will be recognized only in environments where the bottleneck is the performance capabilities of the tape drive. If the drives are causing Arcserve Backup to wait, RAID Striping can help to minimize this condition and increase throughput.
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