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:
Jul. 20, 2010
Filed:
Jun. 07, 2007
Applicants:
Akira Fujibayashi, Sagamihara, JP;
Kazuhisa Fujimoto, Koganei, JP;
Hiroki Kanai, Odawara, JP;
Inventors:
Assignee:
Hitachi, Ltd, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 9/24 (2006.01);
U.S. Cl.
CPC ...
Abstract
When there is an access passing between unit disk controllers, the band of a mutual connecting network must be very large in order to exhibit the performance sufficiently, so that the cost is increased. In the present invention, the access number of a logical volume is monitored, the change of an access path is suggested to an upper class device, and the logical volume is moved or copied to each unit disk controller, so that the mutual connecting network is used mainly for copy of the logical volume, thereby reducing the necessary band.