广域分布式存储系统编码方案可靠性研究

2011 19th International Euromicro Conference on Parallel, Distributed and Network-Based Processing Pub Date : 2011-02-09 DOI:10.1109/PDP.2011.70

K. Peter

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引用次数: 3

摘要

分布式存储系统由分布在多个数据中心的大量商用硬件组成。即使存在故障(永久故障)，系统也应该提供可靠的存储。虽然复制具有简单的优点，但也存在一些编码技术，可以同时提供具有最佳冗余比的适应性可靠性，例如MDS(最大距离可分离)擦除码。编码和分配方案影响着预期存储的可靠性。本文提出了擦除编码和复制技术的可靠性模型，特别是它们在广域存储系统中的应用。此外，我们利用这些模型来量化具体数据存储场景的可靠性属性。

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Reliability Study of Coding Schemes for Wide-Area Distributed Storage Systems

Distributed storage systems comprise a large number of commodity hardware distributed across several data centers. Even in the presence of failures (permanent failures) the system should provide reliable storage. While replication has advantages because of its simplicity there exist coding techniques that provide adaptable reliability properties with an optimal redundancy ratio at the same time e.g. MDS (maximum distance separable) erasure codes. The coding and distribution scheme influences the prospective storage reliability. In this paper we present reliability models for erasure coding and replication techniques especially for their application in wide-area storage systems. Furthermore we utilize these models to quantify the reliability properties of concrete data storage scenarios.

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2011 19th International Euromicro Conference on Parallel, Distributed and Network-Based Processing

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