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RAID

Redundant Array of Independent Disks (RAID) is a technology which makes use of multiple disk drive components to boost redundancy and improvise performance. The term RAID was first introduced by Garth A. Gibson, David Patterson, and Randy Katz in the year 1987 at the University of California, Berkeley. The data is disseminated across the drives, depending on the RAID levels. The RAID term is also used for computer data storage schemes that can replicate and divide the data among various logically attached physical hard drives.

RAID is one of the examples of storage virtualization, and the different levels are allocated followed by a number, such as RAIDO, and RAID 1. Each of the RAID level offers availability, performance, capacity, and reliability. Apart from this, except RAID 0, RAID 1, RAID 2, RAID 3, RAID4, RAID5, and RAID 6 offers protection against disk failure, and read errors.

Most of the RAID levels are integrated parity – an error protection scheme to provide fault tolerance in a specified set of data. Moreover, all the versions of RAID with an exception safeguards from catastrophic data loss caused by either physical damage on a single drive within the array.

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