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中文摘要：
为了解决容灾系统中单个备份服务器带来的性能瓶颈，本文提出了一种多点网络异地数据备份恢复方法MRDBR．该方法实时监控逻辑卷的数据变化，将监控到的数据变化记录通过海量缓存发送至多个备份服务器进行写重放，完成对本地数据的多点备份．在灾难发生后，根据备份服务器的负载情况，从各备份服务器对任务的差异数据进行并发恢复，并动态调整各备份源的恢复任务，最后在本地进行数据拼合，完成快速恢复．实验证明，该方法具有多点备份、性能稳定、恢复速度快等优点．
英文摘要：
In order to solve the performance bottleneck of the d single data backup sever, a multi-point remote data backup and isaster recovery system which only has a recovery （MRDBR） method is proposed Data changes of the logical volume will be monitored in real-time, and sent the changes to multiple back up servers, then replayed on every remote backup server. When disasters happened, the differences of the recovery task, will be distributed to different parts, and recover from multiple backup servers, by their loads. Then these parts will be united locally, and the fast disaster recovery of the data was a chieved. The experiments show that the proposed method has the features of multi point backup,steady performance and high- speed recovery.
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