J4 ›› 2009, Vol. 36 ›› Issue (3): 480-485.

• 研究论文 • 上一篇    下一篇

分布式存储系统的可靠性研究

张薇1,2;马建峰2;杨晓元1
  

  1. (1. 武警工程学院 电子技术系,陕西 西安  710086;
    2. 西安电子科技大学 计算机网络与信息安全教育部重点实验室,陕西 西安  710071)
  • 收稿日期:2008-02-28 修回日期:2008-10-15 出版日期:2009-06-20 发布日期:2009-07-04
  • 通讯作者: 张薇
  • 基金资助:

    国家自然科学基金资助(60503012,60842006,60743005)

Reliability of distributed storage systems

ZHANG Wei1,2;MA Jian-feng2;YANG Xiao-yuan1   

  1. (1. Engineering Institute of the Armed Police, Xi'an  710086, China;
    2. Ministry of Education Key Lab. of Computer Network and Information Security, Xidian Univ., Xi'an  710071, China)
  • Received:2008-02-28 Revised:2008-10-15 Online:2009-06-20 Published:2009-07-04
  • Contact: ZHANG Wei

摘要:

通过对分布式存储系统体系结构的研究,认为数据服务的可靠性由时间、节点失效概率密度函数、数据分离算法及存储策略这4个因素影响.在此基础上,结合可靠性理论,用概率方法构造了存储系统的可靠性模型,根据模型可以对给定系统的可靠性进行预测,并据此制定存储策略,从而将可靠性问题在系统设计阶段解决,并使数据服务的可靠性保持在较高水平.

关键词: 存取结构, 失效概率, 存储策略

Abstract:

Based on invalid probability of storage nodes, a model is provided to evaluate the reliability of a given distributed information storage system. In this model, the reliability of a storage system is affected by 4 factors: time, invalidate probability of storage nodes, data distribution algorithm and storage policy. Such a model could partly solve the reliability problem in the system designing phase, and make data service more reliable.

Key words: access structure, failure probability, distributed storage

中图分类号: 

  • TP309