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:
Aug. 14, 2018
Filed:
Sep. 22, 2015
Applicant:
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Inventors:
Yoshihiro Tsuchiya, Yokohama, JP;
Takashi Watanabe, Kawasaki, JP;
Assignee:
FUJITSU LIMITED, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 3/06 (2006.01); G06F 12/1018 (2016.01); G06F 11/00 (2006.01);
U.S. Cl.
CPC ...
G06F 3/0608 (2013.01); G06F 3/0641 (2013.01); G06F 3/0673 (2013.01); G06F 3/0674 (2013.01); G06F 11/00 (2013.01); G06F 12/1018 (2013.01); G06F 2212/65 (2013.01);
Abstract
A storage control apparatus includes a plurality of MBFs for managing pieces of data stored in a storage by storage region, caches some of the MBFs on a RAM, and determines the presence or absence of redundancy on a basis of the MBFs on the RAM alone. The storage control apparatus performs redundancy elimination on the pieces of data already stored in the storage on the basis of how the MBFs are used such that the contents of a hash log for an MBF higher in frequency of use are maintained.