基于差量备份的文件级持续数据保护  

File-Level Continuous Data Protection Based on Differential Backup

作　　者：丁宏[1] 郭玉东[1] 董卫宇[1] 王立新[1] 

机构地区：[1]信息工程大学信息工程学院,河南郑州450002

出　　处：《信息工程大学学报》2010年第6期692-695,共4页Journal of Information Engineering University

摘　　要：分析了传统文件级持续数据保护方案的不足,提出并实现了一种基于差量备份与恢复的文件级持续数据保护方法。在备份服务器端保存每次修改操作的文件差量,提高了存储空间利用率,实现了正反两个方向的文件恢复方法,有效提高了恢复时间目标。比传统文件级持续数据保护系统更加实用。This paper analyzes the disadvantages of traditional projects of file-level continuous data protection,then presents one system of file-level continuous data protection based on differential backup and recovery.The system saves the differential file content between the two file versions,so the storage space utilization is raised.The system can recover file by two ways,backward and forward,which improves recovery time objective efficiently.The system is more practical than before.

关 键 词：持续数据保护 文件差量 恢复时间目标 恢复点目标 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]