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TekSpek Hard Drives
RAID

RAID


Date issued:
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RAID 2: Bit-level striping with Hamming code ECC
RAID 2 is no longer used in modern systems and never caught on commercially as it was cripplingly expensive, interesting only in that it did not fully subscribe to standards for other RAID types, another reason perhaps for its demise.

RAID 3: Byte level Striping with Dedicated Parity Drive
Used very rarely, data is striped on the drives at the byte level rather than the block level. Generally used for applications where speed is paramount but where fault tolerance must be maintained, now superseded by RAID 5.

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