An Improvement of Migration Efficiency in a Distributed Storage System with Dynamic Tiering

An Improvement of Migration Efficiency in a Distributed Storage System with Dynamic Tiering
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动态分层提高分布式存储系统迁移效率

DOI:
10.1109/snpd.2019.8935656
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发表时间:
2019
期刊:
Proceedings of the 20th International Conference on Software Engineering, Artificial Intelligence, Networking and Parallel/Distributed Computing (SNPD 2019)
影响因子:
--
通讯作者:
A.Nunome and H.Hirata
A.Nunome and H.Hirata
中科院分区:
--
文献类型:
--
作者:
Kentarou Wada;Takeshi Kurosawa;A.Nunome and H.Hirata

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我们提出了一个分布式存储系统,自主迁移到一个合适的存储节点的数据块。在我们的存储系统中,频繁访问的数据块将被自主迁移到更高性能的存储节点(即,较高的存储层),而很少访问的数据块将被迁移到较低性能的存储节点(即,较低的存储层)。我们的调查表明,它可能需要几个迁移,以找到一个数据块到最合适的存储节点时,目标存储层有很多的存储节点。在本文中,我们提出了一种方法来提高数据迁移效率,以提高整个系统的I/O性能。我们的模拟结果表明,所提出的方法可以大大减少I/O执行时间比以前的一个。在具有数百个规模节点的系统中,执行时间最多减少约五分之一。
We have proposed a distributed storage system which autonomously migrates a data block into a suitable storage node. In our storage system, heavily accessing data blocks will be migrated autonomously to a higher performance storage node (i.e. an upper storage tier), and rarely accessed data blocks will be migrated to a lower performance storage node (i.e. a lower storage tier). Our investigation shows that it may need several migrations in order to locate a data block onto the most suitable storage node when the destination storage tier has a lot of storage nodes. In this paper, we propose a method to enhance data migration efficiency to improve I/O performance of the whole system. Our simulation results show that the proposed method can greatly reduce I/O execution time than the previous one. The execution time was reduced about one-fifth at the maximum in a system with several hundred scale nodes.
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