| Design and Implementation of a Fibre Channel Target Driver Supporting SCSI |
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| 作者姓名： | 吴昊 舒继武 温冬婵 郑纬民 |
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| 作者单位： | DepartmentofComputerScienceandTechnology,TsinghuaUniversity,Beijing100084,China |
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| 基金项目： | Supported by the National High-Tech Research and Development Program (863) of China (No.2001AA111110) |
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| 摘 要： | Fibre channel storage area networks (FC-SAN) are effective solutions to address storage management problems caused by very large volumes of data. But the expense of fibre channel devices limits FC-SAN applications. The use of IP networks instead of fibre channel networks will reduce SAN cost, but will also reduce the performance. Therefore, small computer system interface (SCSI) devices were considered to replace FC disks to reduce the SAN cost. A driver for the FC network adapter and the FC target, designed and implemented to support this structure, obeys the SCSI protocol and works in target mode with 200 MB/s bandwidth. The FC target architecture and implementation were compared with the FC initiator.The SCSI command transfer process in the FC layer was described. The performance test results show that the maximum I/O throughput reachs 167 MB/s for read requests and 196 MB/s for write requests (FC bandwidth is 200 MB/s), verifying that the FC target is very efficient. The modularization, efficiency, and low cost of the FC target will enable SAN and fibre channel to be more widely used in applications.
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| 关 键 词： | 存储区网络 设计 纤维管路协议 小型计算机系统接口 SCSI 数据存储 |
| 收稿时间： | 17 June 2003 |
Design and Implementation of a Fibre Channel Target Driver Supporting SCSI |
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| Hao Wu, &#x;
, Jiwu Shu, &#x;î , Dongchan Wen, ¬
,Weimin Zheng,
ຬ .Design and Implementation of a Fibre Channel Target Driver Supporting SCSI[J].Tsinghua Science and Technology,2005,10(1):115-121. |
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| Authors: | Hao Wu &#x;
Jiwu Shu &#x;î Dongchan Wen ¬
Weimin Zheng
ຬ |
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| Institution: | Department of Computer Science and Technology, Tsinghua University, Beijing 100084, China |
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| Abstract: | Fibre channel storage area networks (FC-SAN) are effective solutions to address storage man- agement problems caused by very large volumes of data. But the expense of fibre channel devices limits FC-SAN applications. The use of IP networks instead of fibre channel networks will reduce SAN cost, but will also reduce the performance. Therefore, small computer system interface (SCSI) devices were consid- ered to replace FC disks to reduce the SAN cost. A driver for the FC network adapter and the FC target, de- signed and implemented to support this structure, obeys the SCSI protocol and works in target mode with 200 MB/s bandwidth. The FC target architecture and implementation were compared with the FC initiator. The SCSI command transfer process in the FC layer was described. The performance test results show that the maximum I/O throughput reachs 167 MB/s for read requests and 196 MB/s for write requests (FC band- width is 200 MB/s), verifying that the FC target is very efficient. The modularization, efficiency, and low cost of the FC target will enable SAN and fibre channel to be more widely used in applications. |
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| Keywords: | storage area networks (SAN) fibre channel protocol (FCP) small computer system interface (SCSI) FC target SCSI target middle level (STML) |
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