Term: REDUNDANT ARRAY OF INEXPENSIVE DISKS (RAID)
A way of creating a fault-tolerant storage system. There are 6 levels. Level 0 uses byte-level striping. Level 1 uses mirroring. Level 2 uses bit-level striping. Level 3 stores error-correcting information (such as parity) on a separate disk and uses data striping on the remaining drives. Level 4 is level 3 with block level striping. Level 5 uses block level and parity data striping.
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