摘要
提出了一种在块级持续数据容灾系统中建立备份位表和恢复位表的方法,有效消除数据恢复过程中冗余读写操作,提高了数据恢复的效率。实验证明,采用位表的块级持续数据容灾系统可以快速地将被保护数据卷恢复到之前任意时刻的正确状态。
This paper presents a method of building backup bit-table and restore bit-table in block level continuous data tolerance system,improves the efficiency of data restore by eliminating redundant I/O operations during its procedure.It is proved by experiments that block level continuous data tolerance system adopted on bit-table can quickly restore protected data volume to any point in time accurately.
出处
《计算机工程与应用》
CSCD
北大核心
2010年第32期119-122,共4页
Computer Engineering and Applications
基金
国家自然科学基金(No.60720106001)~~
关键词
位表
块级
持续数据容灾
冗余读写操作
任意时刻
bit-table； block level； continuous data tolerance； redundant I/O operations； any point in time；
