摘要
连续数据保护技术在备份连续变化的历史数据时有增量数据和原数据2种选择。提出一种连续数据保护系统,采用将原数据持续备份到存储体中的备份方式,并在此基础上实现一种基于位表优化的数据恢复机制来实现任意时间点的快速恢复。同时给出2种数据恢复策略来最大程度保证恢复数据的可用性。原型实验表明,该数据恢复机制可以将被保护磁盘快速恢复到正确的状态。
Continuous Data Protection（CDP） technology can choose backup the incremental data or original data as the continuous changed history data. This paper presents a Continuous Data Protection System（CDPS）. It adopts backup the original data to storage device continuously. In order to achieve any point in time of rapid recovery, it also implements an optimized data recovery mechanism based on Bit-Table. Meanwhile it also gives two strategies to assure the availability of recovered data at utmost. It is proved by prototype experiments that the protected disk can be recovery to the right state quickly.
出处
《计算机工程》
CAS
CSCD
北大核心
2010年第12期61-63,共3页
Computer Engineering
基金
国家自然科学基金资助项目(60720106001)
关键词
连续数据保护
原数据
任意时间点
快速恢复
Continuous Data Protection（CDP）
original data
any point in time
rapid recovery
