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中文摘要：
设计并实现了一种能够保证服务连续性的容灾系统。系统在设备驱动层使用实时监控写操作的方法，通过Internet将数据备份到多个远程容灾中心；采用多种数据恢复策略，实现数据的快速恢复；提供了服务自动切换机制，保证系统能够对外提供不间断服务。此外，该系统支持多种操作系统和数据库，并提供了基于Web的配置管理方式。
英文摘要：
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.
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