文章基本信息

标题：Rack Aware Data Placement for Network Consumption in Erasure-Coded Clustered Storage Systems
本地全文：下载
作者：Bilin Shao ; Dan Song ; Genqing Bian 等
期刊名称：Information
电子版ISSN：2078-2489
出版年度：2018
卷号：9
期号：7
页码：150
DOI：10.3390/info9070150
语种：English
出版社：MDPI Publishing
摘要：The amount of encoded data replication in an erasure-coded clustered storage system has a great impact on the bandwidth consumption and network latency, mostly during data reconstruction. Aimed at the reasons that lead to the excess data transmission between racks, a rack aware data block placement method is proposed. In order to ensure rack-level fault tolerance and reduce the frequency and amount of the cross-rack data transmission during data reconstruction, the method deploys partial data block concentration to store the data blocks of a file in fewer racks. Theoretical analysis and simulation results show that our proposed strategy greatly reduces the frequency and data volume of the cross-rack transmission during data reconstruction. At the same time, it has better performance than the typical random distribution method in terms of network usage and data reconstruction efficiency.
关键词：data placement; rack aware; erasure codes; network consumption; clustered storage systems data placement ; rack aware ; erasure codes ; network consumption ; clustered storage systems