基于内核驱动的实时备份技术的研究

A Research of Real-Time Backup Technology Based on Kernel Driver

实时备份技术是当前灾备系统的一项关键技术。运用实时备份技术,灾备系统突破了传统的定时备份方法,从而可以完成任何时间点的故障恢复,从根本上解决传统备份中低恢复能力和非精细时间策略的先天弱点,极大地提高了数据保护的能力。实现实时备份有多种方法,本文阐述了一种基于文件系统内核过滤驱动的实时备份技术,这种技术可以实时监控备份对象的访问操作,实现了针对文件改写、删除、创建等事件触发的备份,当关键数据变化时,自动实现关键数据的备份,从而保证被保护数据可以恢复到过去的任意时间点。

The real-time backup technology is one of the most significant parts of the disaster data backup system.The traditional regularly backup method is broken by the system powered by the real-time backup technology.The system can recovery the file to any time point which removes away the inherent weaknesses of traditional backup methods such as weak recovery capability and rough time strategy.So the system dramatically enhances the ability of data protection.This thesis introduces one implementation based on the file system filter kernel driver technology.With the technology,the backup system can monitor the operation of backup-object real-timely;backup a file automatically,intellectually with the rewriting,deleting,creating,and other operations of the file and recovery the protected data to any time point.