G - Physics – 06 – F
Patent
G - Physics
06
F
G06F 11/08 (2006.01) G06F 11/10 (2006.01) G06F 13/14 (2006.01) G11B 20/18 (2006.01)
Patent
CA 2134016
An improved storage device, such as a disk drive, is disclosed for use in an array of drives. Each drive has logic and Exclusive Or calculation means. Data to be written is sent to the target disk drive from the host computer undera new command that instructs the target drive to generate part of the new parity, and may also identify the parity drive. The target device reads the old data from it's media, generates a parity syndrome, stores the new data and then initiates communication with the identified parity drive, instructing the paritydrive to read the old parity and generate the new parity information from the parity syndrome and the old parity. The parity drive, after generating the new parity, writes the new parity onto it's media, all without further host or host I/O action.
Barrett B.p.
International Business Machines Corporation
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