disk redundancy


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disk redundancy

Writing to two or more disks at the same time. Having the same data stored on separate disks enables the data to be recovered in the event of a disk failure without resorting to expensive data recovery techniques. RAID 1 and RAID 5 are common approaches to disk redundancy. See RAID, data redundancy and data recovery.
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RAID 0/ 1/ 5/ 6/ 5+spare disk redundancy, Online RAID Capacity Expansion, Online RAID Level Migration, HDD S.
With RAIDn the user just needs to decide how much capacity they want and how much security through disk redundancy they need.
For instance, server disk redundancy using redundant array of inexpensive disk (RAID) technology is included.