摘要
廉价磁盘冗余阵列（ＲＡＩＤ）采用许多小的廉价磁盘来代替大容量昂贵的磁盘，以取得更高的性能和更低的功耗。本文介绍了ＲＡＩＤ－５级磁盘阵列中校验信息的八种不同的分布策略，即奇偶校验信息的放置策略，并从几个不同的应用情况对不同的放置策略进行了研究，结论是不同的奇偶校验信息放置策略对磁盘阵列的Ｉ／Ｏ读写性能有很大的影响。
Many small and inexpensive disks are substituted for massive disk in the reduntant array of inexpellsive disks (RAID) technology to gain higher performance and lower consume. In this paper, 8 kinds of different placement of parity of RAID level 5 are discussed.Performance evaluation of placement of parity information in different application environments is studied in detail.The conclusion is different kinds of placement of parity information can produce a great deal of effects on I/O read/write performance of RAID.
出处
《数据采集与处理》
CSCD
1994年第3期220-224,共5页
Journal of Data Acquisition and Processing
基金
国家教委博士点专项基金
关键词
奇偶校验
性能分析
磁盘阵列
校验信息
parity check
performance analysis
fault-tolerant computing
disk array
