The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 07, 2013
Filed:
Jun. 22, 2009
Kevin John Ash, Tucson, AZ (US);
Jeffrey Michael Barnes, Tucson, AZ (US);
Michael Thomas Benhase, Tucson, AZ (US);
Shachar Fienblit, Haifa, IL;
Matthew Joseph Kalos, Tucson, AZ (US);
Steven Edward Klein, Tucson, AZ (US);
Gail Andrea Spear, Tucson, AZ (US);
Kevin John Ash, Tucson, AZ (US);
Jeffrey Michael Barnes, Tucson, AZ (US);
Michael Thomas Benhase, Tucson, AZ (US);
Shachar Fienblit, Haifa, IL;
Matthew Joseph Kalos, Tucson, AZ (US);
Steven Edward Klein, Tucson, AZ (US);
Gail Andrea Spear, Tucson, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
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.