华中科技大学学报（自然科学版）2015，Vol.43Issue(10)：53-57,5.DOI:10.13245/j.hust.151011
云计算环境下的动态数据副本管理策略
Dynamic data replica management strategy in cloud computing environment
摘要
Abstract
Focusing on the frequent single point of failure in cloud computer system ,a dynamic data replica management strategy was proposed in cloud computer environment .The replica placement de-cision of the proposed replica management strategy was made by specifically analyzing the state param-eters of target node ,including the current load condition ,the size of the current available storage ca-pacity ,the communication bandwidth ,the historical access record and its historical failure record . And at the same time ,a higher priority was provided to the bigger file replica in the decision-making of replica replacement .Experimental results illustrate that the proposed dynamic replica management strategy is stable in the criterion of average data access distance ,and w hich outperforms other several classic replica strategy in the measurements of the system load balance level and the average task exe-cution time .关键词
云计算/数据副本/文件热度/副本放置/副本置换Key words
cloud computing/data replica/file popularity/replica placement/replica replacement分类
信息技术与安全科学引用本文复制引用
邓见光,赵跃龙,袁华强..云计算环境下的动态数据副本管理策略[J].华中科技大学学报（自然科学版）,2015,43(10):53-57,5.基金项目
国家自然科学基金资助项目(61402106) （61402106）
广东省自然科学基金资助项目(2014A030313632). （2014A030313632）
