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arXiv 1702.01241cs.ITmath.IT
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分布式存储系统中的广义捎带码

Generalized piggybacking codes for distributed storage systems

Shuai Yuan, Qin Huang, Zulin Wang

摘要:

本文通过考虑各种保护实例和捎带实例,对分布式存储系统的捎带结构进行了推广。分析表明,受保护实例的比例决定了系统节点的平均修复带宽。通过优化保护实例的比例,当奇偶检验节点数趋于无穷大时,广义捎带码的修复率由50%趋近于0.此外,广义捎带码修复单个系统节点代价的计算复杂性小于现有的捎带设计。

英文摘要:

This paper generalizes the piggybacking constructions for distributed storage systems by considering various protected instances and piggybacked instances. Analysis demonstrates that the proportion of protected instances determines the average repair bandwidth for a systematic node. By optimizing the proportion of protected instances, the repair ratio of generalized piggybacking codes approaches zero instead of 50% as the number of parity check nodes tends to infinity. Furthermore, the computational complexity for repairing a single systematic node cost by generalized piggybacking codes is less than that of the existing piggybacking designs.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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