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中文摘要：
远程数据复制技术是容灾系统中最关键的技术，在实现灾难恢复中起着重要的作用。出于通用性和扩展性的考虑，提出了一种基于windows操作系统的数据复制系统，阐述了系统的基本结构和工作流程。在保证主端视图一致性和从端数据一致性的基础上，提出了提高主端IO效率的并行IO策略和减少数据传输过程中网络带宽占用的请求合并策略。实验分析表明，所提出的方案具有较高的有效性和实用性。
英文摘要：
Remote data replication is the key technology in the disaster - tolerance system. It plays a important part in implementing disaster recovery. Considering generality and expansibility, this paper presents a data - replicator system based on windows operation system. Its architecture and work flow are described in this paper. As well as ensureg primary data view consistency and secondary data consistency, we design and implement parallel I0 strategy to improve the efficiency of the Primary and request combination strategy to reduce bandwidth during transmitting datas. The experimental analyses show that the two strategys are effective and efficient.
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