A Case for Redundant Arrays of Inexpensive Disks (RAID)
A Case for Redundant Arrays of Inexpensive Disks (RAID)
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DOI：
10.1109/9780470544839.ch1
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
R. Buyya;Toni Cortes;Hai Jin
中科院分区：
文献类型：
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作者：
R. Buyya;Toni Cortes;Hai Jin
CPU和内存性能的提高如果不能与I/O性能的提高相匹配的话，就会被浪费掉。虽然单个大型昂贵磁盘（SLED）的容量迅速增长，但SLED的性能改进一直不大。廉价磁盘冗余阵列（RAID），基于为个人计算机开发的磁盘技术，提供了一个有吸引力的替代SLED，有望在性能，可靠性，功耗和可扩展性的数量级的改进。本文介绍了RAID的五个级别，给出了它们的相对成本/性能，并将RAID与IBM 3380和Fujitsu Super Eagle进行了比较。
Increasing performance of CPUs and memories will be squandered if not matched by a similar performance increase in I/O. While the capacity of Single Large Expensive Disk (SLED) has grown rapidly, the performance improvement of SLED has been modest. Redundant Arrays of Inexpensive Disks (RAID), based on the magnetic disk technology developed for personal computers, offers an attractive alternative to SLED, promising improvements of an order of magnitude in performance, reliability, power consumption, and scalability. This paper introduces five levels of RAIDs, giving their relative cost/performance, and compares RAIDs to an IBM 3380 and a Fujitsu Super Eagle.