Apparatus and method to maintain write operation atomicity where a data transfer operation crosses a data storage medium track boundary

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United States of America Patent

PATENT NO 8438332
APP PUB NO 20100325376A1
SERIAL NO

12489354

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Abstract

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A method to maintain write operation atomicity where a write operation crosses a data storage medium track boundary. The method supplies a storage controller comprising a host adapter, a processor, and a NVS. The host adapter receives from a host computer a write request and data. The method determines if the write request will cross a data storage medium track boundary. If the write request will cross a data storage medium track boundary, the method indicates to the host adapter that the write request comprises a two-track transfer, and writes the data to the NVS as the data is received. If the host computer fails prior to providing all the data to the storage controller, the method discards the data written to the NVS to ensure write operation atomicity.

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Patent Owner(s)

Patent OwnerAddress
INTERNATIONAL BUSINESS MACHINES CORPORATIONNEW ORCHARD ROAD ARMONK NY 10504

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ash, Kevin John Tucson, US 29 888
Barnes, Jeffrey Michael Tucson, US 1 15
Benhase, Michael Thomas Tucson, US 90 2222
Fienblit, Shachar Haifa, IL 63 1066
Kalos, Matthew Joseph Tucson, US 69 1492
Klein, Steven Edward Tucson, US 13 200
Spear, Gail Andrea Tucson, US 63 1889

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