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:
Sep. 30, 2014
Filed:
Nov. 15, 2012
Fujitsu Limited, Kawasaki, JP;
Fumio Matsuo, Nagano, JP;
Katsuo Enohara, Kawaguchi, JP;
Takaaki Yamato, Nagano, JP;
Nobuyuki Hirashima, Nagano, JP;
Takashi Murayama, Nagano, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A virtual tape device includes a storage unit, an instruction unit, and a reading unit. The storage unit stores a plurality of logical volumes. The instruction unit receives a request for mounting a specified logical volume from an information processing apparatus. The instruction unit issues a mount instruction to both a physical tape device communicated to the virtual tape device and a virtual device communicated to the virtual tape device when the specified logical volume is not stored in the storage unit. The mount instruction instructs to mount the specified logical volume. The reading unit reads data of the specified logical volume to the storage unit from a device which outputs a mount completion notification first among both of the devices which have received the mount instruction.