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.

Date of Patent:
May. 31, 2011

Filed:

Feb. 08, 2006
Applicants:

Kensuke Amaki, Nasushiobara, JP;

Kazuhiko Watanabe, Yokohama, JP;

Inventors:

Kensuke Amaki, Nasushiobara, JP;

Kazuhiko Watanabe, Yokohama, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 9/46 (2006.01); G06F 13/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

Overload of communication lines and the drop of through-put of task processing in a center computer is prevented. The center computer executes a plurality of task processing, writes the execution result to a center storage device and remote copies the same data to a plurality of remote storage devices. At this time, the center computer acquires loads of communication lines through load measurement portions and stops the execution of a part of the task processing involved with the transmission of the copy data through the communication line when its load exceeds a predetermined threshold value. When the center storage device and the remote storage devices switch the transmission route of the copy data to other route, the center computer starts again the execution of the task processing previously stopped and starts again the remote copy.


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