| 一种RAID评价新方法 |
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| 引用本文： | 骆新国,张江陵.一种RAID评价新方法[J].华中科技大学学报(自然科学版),1994(10). |
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| 作者姓名： | 骆新国 张江陵 |
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| 作者单位： | 华中理工大学计算机科学与工程系 |
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| 基金项目： | 国家教委博士点科研基金,国家自然科学基金 |
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| 摘 要： | 引入时间冗余度对冗余磁盘阵列（ＲＡＩＤ）并行存储系统的速度特性给予直观描述，分析讨论为提高可靠性而付出的冗余时间开销程度，探索和建立一种ＲＡＩＤ评价新方法。这种方法以解析表达式给出时间冗余度与阵列结构特性参数间的关系，一方面可用作估计系统的带宽、比较不同系统的速度特性；另一方面可用以指导系统的优化设计。
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| 关 键 词： | 磁盘阵列，冗余结构，系统评价，时间冗余度 |
On a New Method for Evaluating RAID |
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| Luo Xinguo Dept.of Computer Sci.&Engin,H.U.S.T.,Wuhan ,China.,Zhang Jianglingm.On a New Method for Evaluating RAID[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,1994(10). |
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| Authors: | Luo Xinguo Deptof Computer Sci&Engin HUST Wuhan China Zhang Jianglingm |
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| Institution: | Luo Xinguo Dept.of Computer Sci.&Engin,H.U.S.T.,Wuhan 430074,China.,Zhang Jianglingm |
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| Abstract: | The redundant structure has been used to improve the system reliability of disk arrays.But this is at the expense of the performance of multiple disk systems .Thsi paper proposes the use of time redundancy as the main index for the evaluation of the speed characteristics ofRAID and discusses the redundant overhead time required for the improvement of reliability.Anew method of evaluation for RAID5 has been developed and it is shown by analysis andcalculation that a RAID constructed with 5 disks will give a time redundancy of 5.89%dueto fault-tolerance,proving the effectiveness of such a disk array. |
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| Keywords: | disk arrays redundant structure system evaluation time redundancy |
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