发明名称 |
System and method for tolerating multiple storage device failures in a storage system with constrained parity in-degree |
摘要 |
A fault-tolerant system for storage arrays has constraints on the number of data from which each redundancy value is computed. The fault-tolerant system has embodiments that are supported on small array sizes to arbitrarily large array sizes, and can tolerate a large number T of failures. Certain embodiments can tolerate many instances of more than T failures. The fault-tolerant system has efficient XOR-based encoding, recovery, and updating algorithms and has simple redundancy formulas. The fault-tolerant system has improved IO seek costs for certain multiple-element sequential host updates.
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申请公布号 |
US7519629(B2) |
申请公布日期 |
2009.04.14 |
申请号 |
US20040956466 |
申请日期 |
2004.09.30 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
HAFNER JAMES LEE;HARTLINE JEFFREY R.;KANUNGO TAPAS |
分类号 |
G06F17/00 |
主分类号 |
G06F17/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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