异地备份系统数据一致性检测方法  

Data consistency checking method in remote backup system

作　　者：刘仕一[1] 李涛[1] 刘哲哿[1] 李峰[1] 

机构地区：[1]四川大学计算机学院,四川成都610065

出　　处：《计算机工程与设计》2010年第17期3766-3768,3777,共4页Computer Engineering and Design

基　　金：国家高技术产业示范工程基金项目([2006]1780);信息产业部电子发展基金项目([2007]292)

摘　　要：针对异地备份系统中数据持续变化的情况,设计并实现了一种基于累积摘要值的一致性检测方法。该方法解决了传统一致性检测需要中断备份任务的问题,保证了备份任务的连续性,并且能够迅速检测本地服务器和远程备份中心数据的一致性,提高了一致性检测的效率。测试结果表明,该方法准确性与中断备份任务对本地服务器上的原始数据和远程备份中心的备份数据进行一致性检测相同。Aimed at the fact that the original data of the remote backup system changes continuously,a data consistency checking method based on summation digest is proposed.This method can not only solve the problem that the traditional consistency checking requires the interruption of the backup task,but also ensure the continuity of the backup task,speedy check the data consistency of the local server and remote backup center,improve the efficiency of the consistency checking.The experiment proved that the accuracy is the same as that of interrupting the backup task to check the consistency of the original data on the local server and the backup data on the remote backup center.

关 键 词：一致性检测 数据备份 数据摘要值 变更数据 累积摘要值 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]