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. 03, 2012
Filed:
Aug. 16, 2010
Yasuo Watanabe, Machida, JP;
Yasutomo Yamamoto, Sagamihara, JP;
Kenta Ninose, Yokohama, JP;
Yoshiaki Eguchi, Yokohama, JP;
Takashige Iwamura, Yokohama, JP;
Hisao Homma, Odawara, JP;
Yasuo Watanabe, Machida, JP;
Yasutomo Yamamoto, Sagamihara, JP;
Kenta Ninose, Yokohama, JP;
Yoshiaki Eguchi, Yokohama, JP;
Takashige Iwamura, Yokohama, JP;
Hisao Homma, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Availability of an information system including a storage apparatus and a computer is improved. First and second storage apparatuses execute remote copy of copying data written into a first primary volume from the computer to a second primary volume, at least one of the first and second storage apparatuses executes local copy of copying the data written into the first or second primary volume in a self-storage apparatus to the corresponding first or second secondary volume, and the computer switches the destination of a write request of the data from the first storage apparatus to the second storage apparatus in case of a failure occurring in the first storage apparatus.