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. 22, 2018
Filed:
Aug. 24, 2015
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Toshiaki Takeuchi, Nagano, JP;
Fumio Matsuo, Nagano, JP;
Katsuo Enohara, Kawaguchi, JP;
Takaaki Yamato, Nagano, JP;
Takashi Murayama, Nagano, JP;
Takuya Kurihara, Nagano, JP;
Akira Ban, Nagano, JP;
Nobuyuki Hirashima, Nagano, JP;
Ryota Tsukahara, Kawasaki, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
A storage device includes: a plurality of first storage devices; a second storage device; and a control device to use the plurality of first storage devices as a primary storage and the second storage device as a secondary storage, control access processing to a plurality of logical volumes each of which indicates a virtual recording medium, register a logical volume for which a mount request is made within a predetermined period of time among the plurality of logical volumes in an management information as the logical volume which belongs to the same group, and allocate a storage area of the primary storage corresponding to each of a plurality of registered logical volumes which belong to a group registered in the management information to any one of the plurality of first storage devices such that an allocation destination of the storage area is distributed among the plurality of first storage devices.