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This paper presents an adaptive erasure correction coding with lossless data compression to reduce the data read/write amount required to recover from single-and double-disk failures in disk arrays. The proposed method utilizes two types of redundancies to reduce the recovery cost, that is, data redundancy, meaning that data block may be compressed to a smaller size, and storage space redundancy,...
Erasure correction coding is an effective technique to improve the dependability of distributed storage systems and disk arrays, in which codeword symbols are distributed over multiple storage elements (SEs), e.g., storage nodes and disk drives. One of the major drawbacks of such storage systems is increased data update cost, that is, data update in one SE induces simultaneous multiple update accesses...
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