Chapter 5: Redundant Arrays of Independent Disks - RAID


Variation of RAID with emphasis on RAID(4+k),1k3Image, which use k check disks to protect against as many disk failures. Operation in normal, degraded, and rebuild modes and their performance analysis. Clustered RAID5 uses parity group size G smaller than the number of disks to reduce disk overload when a disk fails. Balanced Incomplete Block Designs - BIBD and Nearly Random Permutations - NRP are two methods to place parity blocks to balance disk loads. Data layouts are used to reduce disk load increase when a disk fails. Various methods for rebuild processing including the Vacationing ...

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