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US 8,015,260 B2Granted
Encryption keys for multiple drive fault tolerance
AssigneeHewlett-Packard Development Company, L.P.
InventorPurna C. Murthy
Life of this patent
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Abstract
A system and related method for calculating parity information for disk array drive failure recovery. More specifically, using eight bit coefficients and calculating parity information using valid eight bit encryption keys to produce finite field encrypted resultant multiplication. Further disclosed is a method of determining whether a potential encryption key of a particular number of bits produces valid results for all possible multiplications in determining parity values.
Claims11
A computer system comprising:
- a processor;
- a main memory coupled to the processor;
- and
- a plurality of data drives coupled to the processor and configured to operate in a fault tolerant mode;
- said computer system configured to calculate data error recover information based on greater than four bit encryption keys and encrypted resultant multiplication;
- and
- said computer system is configured to write the data error recover information to at least one of the plurality of data drives.
4 more elements
A array controller comprising:
- a processor;
- a memory coupled to said processor;
- a bridge device coupled to said processor, said bridge device configured to couple the array controller to a processor of a host computer system;
- an interface circuit configured couple to a plurality of storage devices;
- and
- said array controller is configured to generate parity information based on encryption keys having greater than four bits.
3 more elements
Dependencies are inferred from the claim text.