一种云存储的自适应容错策略
一种云存储的自适应容错策略
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一种云存储的自适应容错策略
DOI：
10.3837/tiis.2016.11.005
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发表时间：
2016
影响因子：
1.5
通讯作者：
Yang Jinmin
中科院分区：
文献类型：
--
作者：
Yan Xiai;Zhang Dafang;Yang Jinmin
随着海量数据的增长，云存储节点的失效概率越来越大。单一的容错策略，如复制、纠删码等，存在着不可避免的缺点，已经不能满足当今容错的需要。因此，根据文件访问频率和文件大小，提出了一种自适应混合冗余容错策略，该策略在整个生命周期内可以在复制方案和纠删码方案之间动态变化。实验结果表明，该方案不仅节省了存储空间（与复制相比减少了32%），而且保证了节点故障的快速恢复（与纠删码相比增加了42%）。
With the growth of the massive amount of data, the failure probability of the cloud storage node is becoming more and more big. A single fault tolerance strategy , such as replication and erasure codes, has some unavoidable disadvantages, which can not meet the needs of the today's fault tolerance. Therefore, according to the file access frequency and size, an adaptive hybrid redundant fault tolerance strategy is proposed, which can dynamically change between the replication scheme and erasure codes scheme throughout the lifecycle. The experimental results show that the proposed scheme can not only save the storage space(reduced by 32% compared with replication), but also ensure the fast recovery of the node failures(increased by 42% compared with erasure codes).