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:
May. 31, 2016
Filed:
Dec. 20, 2012
Fujitsu Limited, Kawasaki-shi, JP;
Toshihiro Ozawa, Yokohama, JP;
Kazutaka Ogihara, Hachioji, JP;
Yasuo Noguchi, Kawasaki, JP;
Tatsuo Kumano, Kawasaki, JP;
Masahisa Tamura, Kawasaki, JP;
Jun Kato, Kawasaki, JP;
Ken Iizawa, Yokohama, JP;
Kazuichi Oe, Yokohama, JP;
Munenori Maeda, Yokohama, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
A transfer data block is selected, and a data file including the transfer data block is selected as a transfer data file. All the data blocks of the transfer data file are added to the transfer data block. When all the data files including each transfer data block is selected as a transfer data file, the transfer data block is selected as a deletion data block. When a total data amount of the deletion data block is larger than or equal to a predetermined target deletion data amount and a ratio of a total data amount of the transfer data block to the total data amount of the deletion data block is smaller than or equal to a predetermined value, the data file is transferred from a transfer source node to a transfer destination node. Accordingly, a storage can be used efficiently.