摘要
随着应用的高速发展 ,容量大、响应快、高性能NAS正成为网络存储领域的研究热点 针对这种情况 ,设计了一种基于iSCSI协议的专用附网存储服务器 (iSCSI basedNAS ,iNAS) 在iNAS中 ,通过iSCSI软件实现模块 ,使得iNAS同时提供fileI/O和blockI/O服务 ,实现了NAS和SAN的融合 ;通过在RAID控制器和用户内存之间的直接数据传输(零拷贝 ) ,极大地提高了iNAS的I/O响应速度 通过一个多级分流的设备驱动程序 ,将多个RAID整合成单一的存储池 ,从而实现了存储虚拟化 实验结果显示 。
With the high-speed development of application, the requirement for greater capacity, higher I/O speed, and better performance NAS device have been the study hotspot of network storage. To solve the above-mentioned issues, an iSCSI-based network attached storage server (iNAS: iSCSI-bases NAS) is designed. Firstly, iNAS can provide file I/O and block I/O service by iSCSI module, implementing the merging of NAS and SAN. Secondly, iNAS greatly improves I/O speed by the direct data acess (zero copy) between the RAID controller and the user memory. Thirdly, iNAS merges multi-RAID for a single storage pool by using a multi-stage striping device driver, implementing storage virtualization. The experiment shows that iNAS has ultra-high-throughput for file I/O and block I/O.
出处
《计算机研究与发展》
EI
CSCD
北大核心
2004年第1期207-213,共7页
Journal of Computer Research and Development
基金
国家自然科学基金项目 ( 60 173 0 43 )
关键词
附网存储
ISCSI
零拷贝
多级分流
network attached storage
iSCSI
zero copy
multi-stage striping
