RAID-4: Dedicated parity disk

RAID-4: Dedicated parity disk

If your answer was RAID-4, you are correct!

Dedicated parity disk. In this array, there is a set of data disks, plus one extra disk that is dedicated to managing the parity for the data on the other disks. Since all writes must go through the parity disk, that disk becomes a performance bottleneck slowing down all write activity to the entire array.

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This was last published in April 2005

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