Journal of South China University of Technology (Natural Science Edition) ›› 2013, Vol. 41 ›› Issue (1): 70-76.doi: 10.3969/j.issn.1000-565X.2013.01.011

• Computer Science & Technology • Previous Articles     Next Articles

Static File Layout Strategy for Large-Scale Storage System

Long Sai-qin1 Zhao Yue-long1 Xie Xiao-ling1 Chen Wei1 Zeng Wen-ying1,2   

  1. 1. School of Computer Science and Engineering, South China University of Technology, Guangzhou 510006, Guangdong, China;2. School of Computer Engineering and Technology, Guangdong Institute of Science and Technology, Zhuhai 519090, Guangdong, China
  • Received:2012-07-05 Revised:2012-09-16 Online:2013-01-25 Published:2012-12-03
  • Contact: 龙赛琴(1986-),女,博士生,主要从事计算机存储系统研究. E-mail:longsaiqin@163.com
  • About author:龙赛琴(1986-),女,博士生,主要从事计算机存储系统研究.
  • Supported by:

    广东省科技计划项目(2010B060100056);广州市科技计划项目(2010Y0-C681)

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Abstract:

Proposed in this paper is a static file layout strategy (SFLS) in improving the access performance oflarge-scale storage systems. In SFLS, first, the disk is divided into two groups that are respectively used to store hotfiles and large files. Then, the files sorted according to the service time are assigned to the two groups of disks inthe ways of Round-robin or Greedy. The disk group that should be accessed is selected according to the size andheat of files, which speeds up the I/ O access of files and improves the access performance of the storage system.Experimental results show that SFLS dynamically adapts to the increase of system scale, costs less response timeand possesses better load balancing performance, as compared with the static layout strategies SP and SOR and withthe dynamic layout strategy HP.

Key words: large-scale storage system, file layout strategy, static layout, load balancing, mean response time

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