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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Chih-Shing Tau Tzone-I Wang |
| Copyright Year | 2003 |
| Abstract | This paper proposes two improved triple parity placement schemes, the HDD1 (horizontal and dual diagonal) and HDD2 schemes, to enhance the reliability of a RAID system. Both schemes can tolerate up to three disk failures by using three types of parity information (horizontal, diagonal, and anti-diagonal parities) in RAID disk block partitions. The HDD1 scheme can reduce the occurrences of bottlenecks because its horizontal and anti-diagonal parities are uniformly distributed over a disk array, while diagonal parities are placed in a dedicated disk. The HDD2 scheme uses one more disk than HDD1 to store the horizontal parities and an additional diagonal parity, while the anti-diagonal and the diagonal parities are placed in the same way as in the HDD1 scheme, only with a minor difference. The encoding and decoding algorithms of both schemes are simple and effective. Many of the steps of the encoding and decoding algorithms can be executed in parallel. Both schemes enable a RAID to recover rapidly from up to three disk failures, with a single algorithm applied straightforwardly. |
| Sponsorship | IEEE Comput. Soc. Nat. Natural Sci. China State Key Lab. on Integrated Service Network, China Commun. Res. Lab., Japan IEEE Xi'an Sub-section IEEE Taipei Sect. Chinese Inst. Commun. SIGDPS of IPSJ Japan |
| Starting Page | 132 |
| Ending Page | 137 |
| File Size | 312830 |
| Page Count | 6 |
| File Format | |
| ISBN | 0769519067 |
| DOI | 10.1109/AINA.2003.1192855 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2003-03-29 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Decoding Encoding Performance analysis Reliability engineering Failure analysis Redundancy Hardware |
| Content Type | Text |
| Resource Type | Article |
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