发明名称 |
Correcting multiple block data loss in a storage array using a combination of a single diagonal parity group and multiple row parity groups |
摘要 |
A method for correcting double failures in a storage array has the following steps. A storage array is organized as a plurality of concatenated sub-arrays, each sub-array including a set of data storage devices and a row parity storage device. Row parity is computed for each row of each sub-array. The row parity of a particular sub-array is stored on a row parity storage device of the particular sub-array. A diagonal parity is computed across the concatenated sub-arrays. A double storage device failure is corrected using both the sub-array row parity and the diagonal parity. |
申请公布号 |
US7437652(B2) |
申请公布日期 |
2008.10.14 |
申请号 |
US20060402539 |
申请日期 |
2006.04.12 |
申请人 |
NETWORK APPLIANCE, INC. |
发明人 |
ENGLISH ROBERT M.;CORBETT PETER F.;KLEIMAN STEVEN R. |
分类号 |
G06F3/06;G11C29/00;G06F11/10 |
主分类号 |
G06F3/06 |
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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