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:
Dec. 07, 2010
Filed:
Jan. 17, 2008
Michael John Jones, Cedar Park, TX (US);
David Ray Kahler, Tucson, AZ (US);
Robert Akira Kubo, Tucson, AZ (US);
Karl Allen Nielsen, Tucson, AZ (US);
Cheng-chung Song, Tucson, AZ (US);
William Henry Travis, Tucson, AZ (US);
Michael John Jones, Cedar Park, TX (US);
David Ray Kahler, Tucson, AZ (US);
Robert Akira Kubo, Tucson, AZ (US);
Karl Allen Nielsen, Tucson, AZ (US);
Cheng-Chung Song, Tucson, AZ (US);
William Henry Travis, Tucson, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An apparatus for parity data management receives a write command and write data from a computing device. The apparatus also builds a parity control structure corresponding to updating a redundant disk array with the write data and stores the parity control structure in a persistent memory buffer of the computing device. The apparatus also updates the redundant disk array with the write data in accordance with a parity control map and restores the RAID controller parity map from the parity control structure as part of a data recovery operation if updating the redundant disk array with the write data is interrupted by a RAID controller failure resulting in a loss of the RAID controller parity map. In certain embodiments, the parity control structure is a RAID controller parity map.