中文摘要：

根据教育领域中资源访问的聚集性等特征，以教育资源云存储系统架构为基础，设计了副本热度表征副本访问聚集性程度，实现了基于时空特征的副本相关数值计算；同时运用服务集概念和Hadoop分布式文件系统（HDFS）的存储机制提出了三方面的副本管理策略；最后在已开发的教育云存储系统ERS—cloud上进行了一系列实验，结果表明该策略能有效提升教育云存储系统应用效率．

英文摘要：

According to access characteristics in the field of education, a hot degree is introduced to characterize the extent of locality based on the educational cloud storage system architecture, and the re- lated calculations based on the spatial and temporal characteristics are implemented. The replica manage- ment strategies are designed by applying the concept of service set and Hadoop distributed file system （HDFS）. Experiment is conducted on the cloud storage system oriented to education resource： ERS- cloud. It is indicated that the replica management mechanism can effectively improve the efficiency of cloud storage system.