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:
Jan. 29, 2013
Filed:
Sep. 16, 2008
Kazuhide Sano, Fujinomiya, JP;
Katsuhiro Okumoto, Odawara, JP;
Shuji Kondo, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A remote copy system includes a first storage device performing data transmission/reception with a host computer, a second storage device receiving data from the first storage device, and a third storage device receiving data from the second storage device. The first storage device includes a logical volume, the second storage device includes a logical volume being a virtual volume, and the third storage device includes a logical volume. The first storage system changes the state of a first pair of the logical volumes based on the state of a second pair of the logical volumes. With such a remote copy system and a method for use therein, any data backup failure can be prevented.