RAID 4:

Uses block-level striping with a dedicated parity disk. This allows each member of the set to act independently when only a single block is requested. If the disk controller allows it, a RAID 4 set can service multiple read requests simultaneously.

Generally, RAID 4 is implemented with hardware support for parity calculations, and a minimum of three disks is required for a complete RAID 4 configuration.

RAID 4 Recovery – Servers

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