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:
Nov. 25, 2008
Filed:
Jan. 25, 2006
Hiroshi Ohno, Kanagawa, JP;
Kouji Arai, Kanagawa, JP;
Toshio Nakano, Kanagawa, JP;
Hideo Tabuchi, Kanagawa, JP;
Akinobu Shimada, Kanagawa, JP;
Ai Satoyama, Kanagawa, JP;
Yasutomo Yamamoto, Kanagawa, JP;
Yoshiaki Eguchi, Kanagawa, JP;
Hiroshi Ohno, Kanagawa, JP;
Kouji Arai, Kanagawa, JP;
Toshio Nakano, Kanagawa, JP;
Hideo Tabuchi, Kanagawa, JP;
Akinobu Shimada, Kanagawa, JP;
Ai Satoyama, Kanagawa, JP;
Yasutomo Yamamoto, Kanagawa, JP;
Yoshiaki Eguchi, Kanagawa, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A method for controlling a storage system including a host computer, and a first and a second storage control apparatuses each receiving a data input/output request from the host computer and executing a data input/output process for a storage device in response to the request, comprises connecting a first communication path between the host computer and the first apparatus; connecting a second communication path between the first apparatus and the second apparatus; receiving by the first apparatus a first data input/output request from the host computer through the first path; when the first apparatus has judged that the first request is not for the first apparatus, transmitting by the first apparatus a second data input/output request corresponding to the first request, to the second apparatus through the second path; and by the second apparatus, receiving the second request and executing a data input/output process corresponding to the second request received.