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基于iSCSI的级联远程复制系统实现与优化
引用本文:冯正圆,冯红伟. 基于iSCSI的级联远程复制系统实现与优化[J]. 计算机应用与软件, 2009, 26(4)
作者姓名:冯正圆  冯红伟
作者单位:复旦大学软件学院,上海,201203
摘    要:
提出基于iSCSI的级联远程复制系统结构及其实现方法.对传统实现进行优化,一方面引入带双阈值的传输控制队列和引用计数模块,提高本地子系统的性能;另一方面通过添加元数据记录传输和数据一致性恢复功能,解决了两级子系统在网络环境差异较大时协同性差的问题.调节iSCSI参数,进一步优化系统性能.性能测试表明,优化的级联远程复制系统具有高可用性和良好的性能.

关 键 词:级联远程复制系统  传输控制队列  数据一致性

IMPLEMENTATION AND OPTIMIZATION OF AN ISCSI-BASED CASCADING REMOTE COPY SYSTEM
Feng Zhengyuan,Feng Hongwei. IMPLEMENTATION AND OPTIMIZATION OF AN ISCSI-BASED CASCADING REMOTE COPY SYSTEM[J]. Computer Applications and Software, 2009, 26(4)
Authors:Feng Zhengyuan  Feng Hongwei
Affiliation:School of Software;Fudan University;Shanghai 201203;China
Abstract:
The architecture and implementation of an iSCSI-based Cascading Remote Copy System are proposed.A transmission-controlling queue with two thresholds and a reference counting module are used to enhance the efficiency of local subsystem;metadata recording and transmitting modules and recovery function of data consistency are added to remote subsystem to solve the problem of poor cooperation of two-level subsystems in situations of big different networks,therefore the traditional implementation way is optimise...
Keywords:iSCSI
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