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JetStor III


RAID Level:
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RAID 53: High I/O Rates and Data Transfer Performance


RAID Level 53 requires a minimum of 5 drives to implement





Characteristics/Advantages

RAID 53 should really be called "RAID 03" because it is implemented as a striped (RAID level 0) array whose segments are RAID 3 arrays

RAID 53 has the same fault tolerance as RAID 3 as well as the same fault tolerance overhead

High data transfer rates are achieved thanks to its RAID 3 array segments

High I/O rates for small requests are achieved thanks to its RAID 0 striping

Maybe a good solution for sites who would have otherwise gone with RAID 3 but need some additional performance boost

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Disadvantages

Very expensive to implement

All disk spindles must be synchronized, which limits the choice of drives

Byte striping results in poor utilization of formatted capacity





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