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:
Apr. 29, 2003
Filed:
Feb. 01, 1999
Hiroshi Fujiwara, Kawasaki, JP;
Hajime Sugiura, Tama, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
Virtual tape volumes are grouped depending on their attributes, in order to improve access efficiency of the host computer. A storage apparatus includes a virtual storage area for storing a virtual tape volume, a data transfer control program for controlling the data transfer among the virtual storage area, a host computer and a real tape volume, and a virtual tape information database for storing attribute information of the virtual tape volume. The data transfer control program forms groups of the virtual tape volumes having the identical attribute, transfers and develops, to the virtual storage area from the real tape volume, all virtual tape volumes included in the group for the request from the host computer to any one of the virtual tape volumes in the group, and generates a high speed response to such request when the host computer has issued a request to such group.