Design and implementation of service disaster tolerant system
一种服务容灾系统的设计与实现*

This paper presented a service disaster tolerance system. This system could offer real-time off-site backup for local server application data, for IP-based application, could achieve service disaster tolerance. The system monitorsed the local server disk volumes in real-time, and replayed the data changes, which were monitored, on remote disaster recovery center to ensure the application data security. This system provided several disaster recovery strategy to restore application data quickly. The same time, it could timely detect the failure of local server by offering failure detection, and switched the service from local server to remote standby server in a relatively short period of time once the local server failure was be detected, ensuring the service continuity.