云存储环境下基于QoS的动态副本策略研究  

Research on the Dynamic Replica Strategy in Cloud Storage Environment Based on Qo S

作　　者：林清滢[1] 陆锡聪[1] 冯健文[1] 

机构地区：[1]韩山师范学院计算机科学与工程系,潮州521041

出　　处：《现代计算机（中旬刊）》2015年第1期6-9,共4页Modern Computer

基　　金：广东省科技计划项目(No.2012B010100036);韩山师范学院科研团队项目(No.LT201102;LT201101)

摘　　要：为了解决静态副本策略中易造成负载不均衡、用户服务质量需求得不到满足等问题,提出一种动态副本生成算法和动态副本调整算法;在Cloud Sim平台上仿真实验,结果表明,与默认副本策略相比,该策略能够根据用户的访问需求动态为数据文件增删副本,大大地减少用户访问时间,满足用户的服务质量需求。The load balancing may be destroyed and the user QoS requirement is not satisfied due to the static replica strategy in the existing default replica strategy. In order to solve these problems, proposes a dynamic replica generation algorithm and a dynamic replica adjust algorithm. Simulates the experiment using CloudSim toolkit, the results show that the proposed strategy is superior to the default replica strategy because it dynamically adds and deletes replicas according to the user＇s access requirements, which will reduce response time and satisfy user＇s QoS requirement.

关 键 词：云存储 副本策略 动态副本 服务质量 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]