Dynamic information storage or retrieval – Information location or remote operator actuated control – Selective addressing of storage medium
Patent
1994-08-18
1996-09-24
Neyzari, Ali
Dynamic information storage or retrieval
Information location or remote operator actuated control
Selective addressing of storage medium
369 48, 369 58, G11B 1722
Patent
active
055597645
ABSTRACT:
A method of distributing a set of data among a plurality of disks, which provides for load balancing in the event of a disk failure. In accordance with the method the total number of the disks in an array are divided into a number of clusters. The blocks of data are then stored in each cluster such that each cluster contains a complete set of the data and such that data block placement in each cluster is a unique permutation of the data block placement in the other clusters. In the event of a disk failure, data block accesses to the failed disk are redirected to a disk in the other cluster having a copy of the data block and further access to the disks that remain operational are rebalanced.
REFERENCES:
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Keeton et al., "The Evaluation of Video Layout Strategies on a High-Bandwidth File Server" Proc. Network & Operating System Support for Digital Audio & Video, Nov. 3, 1993, pp. 228-239.
Li et al., "Combining Replication & Parity Approaches for Fault-Tolerant Disk Arrays", Proc. 6th IEEE Symposium on Parallel & Distributed Processing, Oct. 26, 1994, pp. 360-367.
Chen Ming-Syan
Hsiao Hui-I
Li Chung-Shen
Yu Philip S.
International Business Machines - Corporation
Ludwin Richard M.
Neyzari Ali
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