Design and implementation of disaster tolerant system guaranteeing service continuity
一种保证服务连续性的容灾系统的设计和实现*

This paper presented a disaster tolerant system for supporting service continuity.It monitored writing requests on device driver level in real-time,and backuped them in several remote tolerant centers at the same time through Internet.Several recovery strategies had been used to support rapid data recovery.An automatic service switch mechanism was achieved to guarantee that the remote servers could provide continuous service instead of local servers during the disaster.Moreover,this system supports various operating systems and databases,and provides a Web-based system configuration.