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
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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:
Science China Information Sciences
影响因子:
--
通讯作者:
Luo Yuan
Luo Yuan
中科院分区:
其他
文献类型:
--
作者:
Wang Jingzhao;Wang Tinghan;Luo Yuan

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节点存储和修复带宽之间的最佳折衷是分布式存储系统(DSS)的一个重要问题。对于具有集群的实际DSS,在修复故障节点时,从集群内节点下载比从跨集群节点下载更多的数据是有效的。因此,区分集群内和跨集群的修复带宽是有用的。对于集群DSS,权衡考虑了特殊的修复假设,其中所有活动节点都用于修复故障节点。在本文中,我们调查的最佳权衡下的集群DSS更一般的存储/修复参数。此外,我们提出了一个再生代码的建设战略,实现了集群DSS的最佳权衡曲线与特定参数的点作为一个数值例子。此外,我们考虑了独立节点的影响,为集群和分离节点的DSS的折衷。
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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