一种基于网格的数据容灾中间件  

Middleware for Data Disaster Tolerance Based on Grid

作　　者：何俊[1] 孙虎 戴浩 赵梅[4] 谢永强 

机构地区：[1]解放军理工大学指挥自动化学院研究生1队 [2]南京军区73656部队 [3]中国电子设备系统工程公司研究所 [4]解放军通信指挥学院二系

出　　处：《军事通信技术》2007年第3期37-41,共5页Journal of Military Communications Technology

基　　金：国家自然科学基金资助项目(90304015)

摘　　要：提出了使用网格技术进行数据容灾的思想,设计了一种基于网格的数据容灾中间件,阐述了这种容灾中间件实现的关键技术。数据分片技术增强了核心数据的可生存能力;副本一致性管理保证了灾难恢复时数据的可用性;失效检测实现了灾难发生时应用的及时切换。这种容灾中间件实现了容灾备份数据在物理上分布存储而逻辑上集中,对应用完全透明,要求业务系统改造小,具有较强的通用性。An idea of data disaster tolerance based on grid was put forward. A data disaster tolerant middleware based on grid was designed and its key technologies were analyzed. Data fragment can improve key datum survivability. Replica consistency management ensures that applications can correctly use the replica when disasters occur. Failure detection makes,applications migrate rapidly when disasters occur. The disaster tolerance middleware realized distribution in storage and concentration in logic of the replica. It was transparent to the application and required less change of the applications. It had more generality than other disaster tolerance products.

关 键 词：网格 容灾 数据分片 副本一致性 失效检测 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]