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:
Dec. 13, 2011
Filed:
Feb. 11, 2008
Kensuke Amaki, Yokohama, JP;
Kenichi Oyamada, Yokohama, JP;
Takeyuki Imazu, Yokohama, JP;
Yoshinori Matsui, Yokohama, JP;
Kensuke Amaki, Yokohama, JP;
Kenichi Oyamada, Yokohama, JP;
Takeyuki Imazu, Yokohama, JP;
Yoshinori Matsui, Yokohama, JP;
Hitachi, Ltd, Tokyo, JP;
Abstract
A plurality of second groups respectively including one or more second volumes are configured in correspondence with each of the first groups of a remote copy source in a remote copy destination, journals are acquired from the first storage apparatus periodically and in the order the journals were created for each of the configured second groups, and the acquired journals are reflected in the corresponding second volume in the corresponding second group. In addition, the latest time stamp of each of the second groups containing the journals retained in the second volume in an unreflected state is compared, the time difference of the latest and oldest time stamps is detected, and prescribed control processing is executed for acquiring the journals regarding the second group with the oldest time stamp in preference to the journals regarding other second groups when the time difference exceeds a preset threshold value.