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The Effects Of Limited Rebuild Buffer And Track Buffers On Rebuild Time In Raid5, Chintan Shah
The Effects Of Limited Rebuild Buffer And Track Buffers On Rebuild Time In Raid5, Chintan Shah
Theses
Redundant Arrays of Independent Disks (RAID) are very popular for creating large, reliable storage systems. A RAID array consists of multiple independent disks that achieve fault tolerance by parity coding. The contents on a failed disk can be reconstructed on demand by reading and exciusive-ORing the corresponding blocks on surviving disks. Upon disk failure, the array enters rebuild mode when it begins to systematically reconstruct the data of the failed disk on a spare disk, provided one is available. The fundamental element of rebuild is the Rebuild Unit (RU).
Surviving disks engaged in rebuild, process user requests at a higher …