采用位表的块级持续数据容灾系统研究  

Research on block level continuous data tolerance system adopted on bit-table

作　　者：余承龙[1] 李战怀[1] 黄英[1] 胡娜[1] 

机构地区：[1]西北工业大学计算机学院,西安710129

出　　处：《计算机工程与应用》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)~~

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.

关 键 词：位表 块级 持续数据容灾 冗余读写操作 任意时刻 

分 类 号：TP334.5[自动化与计算机技术—计算机系统结构]