Method of calculating parity for surviving dual drive...

Details Method of calculating parity for surviving dual drive... Method of calculating parity for surviving dual drive...

2007-07-17

2007-07-17

Baker, Stephen M. (Department: 2133)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S770000

Reexamination Certificate

active

10927307

ABSTRACT:
A disk array utilizes a surviving relationship algorithm for generating parity terms. During a drive failure, a script corresponding to the failure mode (e.g., single storage element failure or dual storage element failure) is executed. The script reconstructs data by deriving a surviving relationship matrix from a seed matrix, sending the resulting surviving relationship matrix to parity/data generators in the storage controller, and generating P parity and Q parity symbols based on the inputs from the relationship matrix. The surviving relationship matrix is independent of symbol position (i.e., row, column, or diagonal) and further ensures that all data is reconstructable after single or dual storage element failures.

REFERENCES:
patent: 5351246 (1994-09-01), Blaum et al.
patent: 6453428 (2002-09-01), Stephenson
patent: 6675318 (2004-01-01), Lee
patent: 6694479 (2004-02-01), Murthy et al.
patent: 2003/0023809 (2003-01-01), Oldfield et al.
patent: 2003/0126522 (2003-07-01), English et al.
patent: 2003/0126523 (2003-07-01), Corbett et al.
patent: 2003/0196023 (2003-10-01), Dickson
patent: 2004/0059958 (2004-03-01), Umberger et al.
patent: 2005/0114729 (2005-05-01), Nielsen et al.
patent: 2005/0160307 (2005-07-01), Schmisseur
patent: 2006/0074995 (2006-04-01), Hafner et al.

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