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:
Jan. 07, 2014
Filed:
Oct. 12, 2006
David F. Mannenbach, Tucson, AZ (US);
Karl A. Nielsen, Tucson, AZ (US);
David F. Mannenbach, Tucson, AZ (US);
Karl A. Nielsen, Tucson, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method of managing data in a cache memory storage subsystem upon a cache write operation includes determining a first number of non-contiguously written sectors on a track in the cache and comparing the first number with a second, threshold number. If the first number exceeds the second number, a full background stage operation is issued to fill the non-contiguously written sectors with unmodified data from a storage medium. A corresponding system includes a cache manager module operating on the storage subsystem. Upon a determination that a cache write operation on a track has taken place, the cache manager module determines a first number of non-contiguously written sectors on the track, compares the first number with a second, predetermined threshold number, and issues a background stage operation to fill the non-contiguously written sectors with unmodified data from a storage medium if the first number exceeds the second number.