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:
Dec. 05, 2017

Filed:

Feb. 17, 2016
Applicant:

Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;

Inventor:

Satoshi Iwata, Yokohama, JP;

Assignee:

FUJITSU LIMITED, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/06 (2006.01);
U.S. Cl.
CPC ...
G06F 3/061 (2013.01); G06F 3/0643 (2013.01); G06F 3/0647 (2013.01); G06F 3/0683 (2013.01);
Abstract

A control unit calculates the expected number of access operations to each recorded data set, and selects one or more recorded data sets as recorded data sets to be relocated, based on the expected number of access operations. The control unit calculates the expected number of access operations to each recorded data set, based on a calculation period and the number of access operations per unit time. The calculation period differs from one recorded data set to another, depending on the next update timing. If the next update timing is earlier than the next relocation timing, the calculation period is a period from the current relocation timing to the next update timing. On the other hand, if the next update timing is later than the next relocation timing, the calculation period is a period from the current relocation timing to the next relocation timing.


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