中文摘要：

iSCSI是利用TCP／IP网络进行SCSI数据传输的协议，与传统存储访问协议相比，其不受限于连接距离，连接方式和拓扑结构灵活，硬件成本和管理成本大大降低，但由于TCP／IP协议栈以及数据拷贝等开销，iSCSI数据传输性能存在一定的瓶颈。详细分析和探讨了目前优化iSCSI传输性能的几种主要方法，并探讨了iSCSI协议未来发展趋势。

英文摘要：

iSCSI protocol is a transfer for SCSI over TCP/IP network. Compared with tranditional storage access protocol, it has not limitation in the distance, and provides flexible connection method and topology, and signifcently reduces the hardware cost and management cost. However, due to the cost on TCP/IP protocol stacks and data copy, some bottlelack exists on the performance of iSCSI data transfer. This paper illustrated and discussed currently several methods to optimize the iSCSI data transfer performance,and also discussed the future trend of iSCSI.