Storage and repair bandwidth tradeoff for distributed storage systems with clusters and separate nodes
Storage and repair bandwidth tradeoff for distributed storage systems with clusters and separate nodes
复制标题
具有集群和独立节点的分布式存储系统的存储和修复带宽权衡
DOI:
10.1007/s11432-018-9499-0
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发表时间:
2018-03
期刊:
影响因子:
--
通讯作者:
Luo Yuan
中科院分区:
文献类型:
--
作者:
Wang Jingzhao;Wang Tinghan;Luo Yuan
The optimal tradeoff between node storage and repair bandwidth is an important issue for distributed storage systems (DSSs). For realistic DSSs with clusters, while repairing a failed node, downloading more data from intra-cluster nodes than from cross-cluster nodes is effective. Therefore, differentiating the repair bandwidth from intra-cluster and cross-cluster is useful. For cluster DSSs, the tradeoff is considered with special repair assumptions where all alive nodes are used for repairing a failed node. In this paper, we investigate the optimal tradeoff for the cluster DSSs under more general storage/repair parameters. Furthermore, we propose a regenerating code construction strategy that achieves the points in the optimal tradeoff curve for the cluster DSSs with specific parameters as a numerical example. Moreover, we consider the influence of separate nodes for the tradeoff for the DSSs with clusters and separated nodes.
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DOI:
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发表时间:
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2013-07
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2013 IEEE International Symposium on Information Theory
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