RAID

From Saferpedia

RAID - Redundant Array of Inexpensive Disks is an acronym defined for the first time in 1978 by David A. Patterson, Garth A. Gibson and Randy Katz from Berkeley University California to describe a redundant matrix of risks. This technology allowed computer users to achieve higher levels of reliability in storage using computer hard disks at lower costs.

RAID is used as generic term for computer software and data storage able to divide and reproduce data between several hard disk units.

Different architectures are nowadays called RAID followed by a number like RAID 0, RAID, 1, etc. The diversity of RAID architecture implies two main objectives: increase data reliability and / or increase performances of input / output. When several hard disks are connected in a RAID it says they are in a RAID matrix. This matrix distributes data in several hard disks but the matrix is seen by computer's user and OS as a single disk. RAID can be configured for different purposes.

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