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.

Date of Patent:
Sep. 19, 2017

Filed:

Feb. 06, 2013
Applicant:

International Business Machines Corporation, Armonk, NY (US);

Inventors:

James M. Karp, Tucson, AZ (US);

Takashi Katagiri, Yokohama, JP;

Yuhko Mori, Kanagawa, JP;

Yutaka Oishi, Kawasaki, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 9/50 (2006.01); G06F 12/00 (2006.01); G06F 3/06 (2006.01); G11B 5/008 (2006.01);
U.S. Cl.
CPC ...
G06F 3/0608 (2013.01); G06F 3/0653 (2013.01); G06F 3/0659 (2013.01); G06F 3/0682 (2013.01); G11B 5/00813 (2013.01); G11B 5/00817 (2013.01); G06F 2003/0698 (2013.01); G11B 2220/90 (2013.01);
Abstract

In one general embodiment, a method includes receiving a request for a write operation to be performed in a tape drive, determining an expected transaction size of a next write operation, comparing the expected transaction size of the next write operation to each of a first transaction size threshold and a second transaction size threshold in response to receiving the request, determining an optimum a write procedure based at least in part on the comparison, and invoking the optimum write procedure in response to determining the optimum write procedure, wherein the first transaction size threshold is greater than the second transaction size threshold, and wherein the optimum write procedure is selected from the group consisting of: a backhitch write procedure, a same wrap backhitchless flush (SWBF) write procedure, and a recursively accumulating backhitchless flush (RABF) write procedure.


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