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, 2020
Filed:
Aug. 29, 2016
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Shigeru Akiyama, Kawasaki, JP;
Yasuhiro Ogasawara, Fujisawa, JP;
Tsukasa Matsuda, Kawasaki, JP;
Hidetoshi Nishi, Nagano, JP;
Hitoshi Kosokabe, Kawasaki, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
A storage controlling apparatus includes a processor, wherein the processor: controls a first counter configured to count, among data stored in a cache memory and relating to an access request, a number of data which are not written in storage volumes of a target of the access request, for each storage volume; determines, in response to reception of a first access request, whether or not a first ratio of a counter value of the first counter to a number of data allocated already to the cache memory into a first storage volume exceeds a first threshold value, the counter value of the first counter corresponding to the first storage volume which is a target of the first access request; and performs a write back process of data from the cache memory into the first storage volume where the first ratio exceeds the first threshold value.