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中文摘要：
远程镜像核心数据对于依赖于数字信息的企事业单位越来越重要．平衡数据可用性、存取性能以及构建和维护成本是设计远程镜像系统必须仔细考虑的．本文介绍了一种基于iSCSI的远程镜像系统整体结构，重点描述镜像日志和缓存的结构，在提高了性能的同时保证数据的可用性．最后测试了在不同网络环境下，远程镜像系统所能承担的最大负载情况.
英文摘要：
Remote mirroring has become increasingly important as organizations and businesses depend more and more on digital information. Balancing the data availability, access performance and the cost of building and maintaining is essential goal for designing remote mirroring system. This paper presents a novel architecture of remote mirroring based on iSCSI and describes the structure of mirroring log and buffer which can improve performance and keep availability of date synchronously. Our measurement results show the most workload of remote mirroring in different network environment.
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