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:
Oct. 02, 2012
Filed:
Sep. 20, 2011
Yoshiaki Eguchi, Yokohama, JP;
Yasutomo Yamamoto, Sagamihara, JP;
Ai Satoyama, Sagamihara, JP;
Akinobu Shimada, Chigasaki, JP;
Yoshiaki Eguchi, Yokohama, JP;
Yasutomo Yamamoto, Sagamihara, JP;
Ai Satoyama, Sagamihara, JP;
Akinobu Shimada, Chigasaki, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The storage system includes a first storage system and a second storage system. The first storage system, which is coupled to a computer and the second storage system, includes a first storage control device and a plurality of first storage units. The second storage system includes a plurality of second storage units. The first storage control device provides the computer with a logical unit assigned to at least one of the second storage units, receives a first access request from the computer and sends a second access request to one of plurality of the second storage units, obtains performance information relating to the second access request, and moves data stored in at least one of the plurality of second storage units to at least one of the first storage units according to the performance information.