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:
Aug. 05, 2008
Filed:
Nov. 23, 2005
Applicants:
Tomohiro Hanai, Yokohama, JP;
Akihiko Sakaguchi, Tachikawa, JP;
Inventors:
Tomohiro Hanai, Yokohama, JP;
Akihiko Sakaguchi, Tachikawa, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of data exchange between volumes without using any unnecessary resource in a storage system includes allocating cache areas for data exchange on a memory, determining the location of data to be exchanged, reading out data from the determined location in source and destination volumes and storing data in their respective caches, and writing data stored in the cache to thus determined location of the volume different from the one that the data was read out.