iSCSI协议性能分析与优化  

Analysis and optimization on performance of iSCSI protocol

作　　者：石永革[1] 谢才炳[1] 石峰[2] 

机构地区：[1]南昌大学信息工程学院,江西南昌330031 [2]南昌航空工业学院,江西南昌330063

出　　处：《计算机工程与设计》2009年第4期915-917,共3页Computer Engineering and Design

基　　金：国家火炬计划基金项目(2005EB010944)

摘　　要：随着企业级的数据呈指数增长,传统的集中式存储方案已无法满足其存储需求,而基于iSCSI协议的IP存储技术在构建异构存储网络方面具有其它数据访问协议无法比拟的优势。分析了影响iSCSI协议工作效率的主要因素,通过采用并行计算技术改进其校验算法来提高校验速度,设计新的数据缓存策略以缩短命令响应时间,从而有效地提高了系统的响应速度,减少了资源消耗。With the exponential increasing of data in enterprise, the traditional centralized storage solution does not satisfy their requirement. As a new technology of network storage, the IP storage technology based on iSCSI protocol has an excellent advantage on constructing isomeric storage network incomparably to other protocols. On the key technology of iSCSI is researched. Specially the some facts that affects the efficiency of the iSCSI protocol are analyzed. For the low efficiency ofiSCSI CRC algorithm, we replace the original serial CRC with parallel CRC algorithm, and according to the characters of iSCSI, we improve the parallel CRC algorithm. A new buffer strategy is proposed to shorten response time of command, thus response time of system is improved efficiently, resource consumption is reduced.

关 键 词：网络存储 IP SAN ISCSI 并行校验 数据缓存策略 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术]