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:
Apr. 27, 2010
Filed:
Nov. 13, 2006
Tomonori Murayama, Yokohama, JP;
Yoichi Mizuno, Yokohama, JP;
Tomonori Murayama, Yokohama, JP;
Yoichi Mizuno, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Computer Peripherals Co., Ltd., Kanagawa-ken, JP;
Abstract
Differential management information that is information representing the difference between a logical volume and a sequential device group after a full backup is updated in response to an update of the logical volume. Partial data that are data representing the difference between the logical volume and sequential device group are specified by using the updated differential management information, information necessary for restoration that is necessary to restore the data group located in the updated logical volume by using the partial data is recorded in the sequential device group, and the partial data are backed up from the updated logical volume into the sequential device group.