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| Arif Merchant, Philip S. Yu, "Analytic Modeling of Clustered RAID with Mapping Based on Nearly Random Permutation," IEEE Transactions on Computers, vol. 45, no. 3, pp. 367-373, March, 1996. | |||
| BibTex | x | ||
| @article{ 10.1109/12.485575, author = {Arif Merchant and Philip S. Yu}, title = {Analytic Modeling of Clustered RAID with Mapping Based on Nearly Random Permutation}, journal ={IEEE Transactions on Computers}, volume = {45}, number = {3}, issn = {0018-9340}, year = {1996}, pages = {367-373}, doi = {http://doi.ieeecomputersociety.org/10.1109/12.485575}, publisher = {IEEE Computer Society}, address = {Los Alamitos, CA, USA}, } | |||
| RefWorks Procite/RefMan/Endnote | x | ||
| TY - JOUR JO - IEEE Transactions on Computers TI - Analytic Modeling of Clustered RAID with Mapping Based on Nearly Random Permutation IS - 3 SN - 0018-9340 SP367 EP373 EPD - 367-373 A1 - Arif Merchant, A1 - Philip S. Yu, PY - 1996 KW - Disk arrays KW - stochastic modeling KW - recovery time KW - performance degradation. VL - 45 JA - IEEE Transactions on Computers ER - | |||
Abstract—A Redundant Array of Independent Disks (RAID) of
In this paper, we describe a fast mapping algorithm based on almost-random permutations. An analytical model is constructed, based on the queue with a permanent customer, to predict recovery time and read/write performance. The accuracy of the results derived from this model is validated by comparing with simulations. Our analysis shows that clustered RAID is significantly more tolerant of disk failure than the basic RAID scheme. Both recovery time and performance degradation during recovery are substantially reduced in clustered RAID; moreover, these gains can be achieved using fairly small
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