Abstract: Data replication is considered a major technique for reducing network latency and bandwidth consumption in data grid. Whereas hardly no dynamic replication strategies has the excellent scalability which is emphasized for large-scale high-latency network, this paper gives highly scalable dynamic replication strategy based on the HMLT. Then, it shows how to realize the strategy in resource management of Chinese remote education.

Key words: Data grid, Dynamic replication, Replica placement, Remote education

摘要： 数据网格资源的增加、地域分布的扩大，引起了网络性能的下降及传输的延迟，这些问题使得动态复制算法的可扩展性变得尤为重要。而目前数据网格中的动态复制算法均不具备良好的可扩展性，为此该文提出了基于分层管理的拓扑HMLT上的动态复制选址策略，并将其应用于远程教育的资源管理中。

关键词: 数据网格, 动态复制, 复制选址, 远程教育

CLC Number: 

• TP338