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Describe raid

Describe raid and what are all raids obtainable even in software and hardware?

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Raid is stand for Redundant Array of Independent Disks/Device. This is technology to develop Disk read & write Performance and Fault Tolerance. Through adding up new disk one can recover data if one of disk goes down / fails. Parity is a technique to rebuild data through the disk fails.

Levels in Raid:

0 - stripping

1 - Mirroring

3 - Striping with Parity

5 - Striping with Parity with more fault tolerant widely utilized.

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