磁盘阵列已成为构建大型存储系统的关键基础设备,目标器为主机提供存储设备访问接口.本文结合RAID原型系统,分析了光纤通道磁盘阵列中目标器模块的功能及其内部体系结构,阐述了目标器对读写请求的不同处理流程,最后采用相关评测工具对光纤通道目标器模块以及RAID系统进行了性能评测,测试结果表明光纤通道目标器模块具有出色的性能,最高数据传输率可达187Mbye/s.
RATD has been the key component for constructing enterprise storage system. The target module supports host for the access interface of storage devices. This paper discusses the function of the target module based on a prototype of Fiber Channel RAID system. Further analyses the internal architecture of target module and gives an elaboration on the various workflows of the read/write access. Finally, we use some general benchmarks to evaluate the performance of this Fiber Channel target module and RAID system. Testing results reveals a moderately sucessful performance of the Fiber Channel target module.