MT^2RAID:一种高可靠大规模磁盘阵列结构  

MT^2RAID:A High Reliable Architecture for Large Scale Disk Arrays

作　　者：王志坤[1,2] 冯丹[1,2] 

机构地区：[1]华中科技大学计算机科学与技术学院,武汉430074 [2]武汉光电国家实验室信息存储部,武汉430074

出　　处：《计算机科学》2010年第11期295-299,共5页Computer Science

基　　金：国家863计划项目(2009AA01A402);教育部创新团队(IRT0725);国家自然科学基金(60503059)资助

摘　　要：传统的磁盘阵列一般采用集中式控制结构,其连接的底层磁盘数受系统总线的制约,容易出现性能瓶颈,且不能容两个以上磁盘出错。从模块化系统的组织方法出发,提出一种采用标准模块化存储单元组成的通过胖树结构互连的大规模磁盘阵列结构MT2RAID,分别就其各种数据分布的性能和可靠性进行了分析和讨论。原型系统测试结果表明,相比集中式磁盘阵列结构,MT2RAID也具有较高的性能。Traditional disk arrays have centralized control architecture.The number of connected disks is constrained by the system bus.Centralized RAID architecture easily generates performance bottleneck and can not tolerate more than two disks faults.This paper proposed MT2 RAID,a modular tree-connected multi-tier RAID architecture for large scale disk arrays.MT2 RAID is built from a collection of commodity components.Storage units are connected through fat-tree based interconnection channels.The performance and reliability of different MT2 RAID level were also analyzed and discussed.Prototype experimental results show that MT2 RAID also has performance advantages compared with centralized RAID architecture.

关 键 词：磁盘阵列 扩展性 可靠性 模块化 

分 类 号：TP333.35[自动化与计算机技术—计算机系统结构]