Redundant array of independent disks

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In computing, a redundant array of inexpensive disks (more commonly known as a RAID) is a system of using multiple hard drives for sharing or replicating data among the drives. Depending on the version chosen the benefit of RAID is a one or more of increased data integrity, fault-tolerance, throughput or capacity compared to single drives.

Standard RAID levels[edit]

Main Wikipedia article: Standard RAID levels

Nested RAID levels[edit]

Main Wikipedia article: Nested RAID levels

Non-RAID drive architectures[edit]

Main Wikipedia article: Non-RAID drive architectures