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. 30, 2024
Filed:
Aug. 11, 2022
Hitachi, Ltd., Tokyo, JP;
Shunsuke Nishiyama, Tokyo, JP;
Kenichi Oyamada, Tokyo, JP;
Hiroki Mera, Tokyo, JP;
Goro Kazama, Tokyo, JP;
HITACHI, LTD., Tokyo, JP;
Abstract
The data duplication system comprises a first storage device having a first data protection area for storing backup images of multiple generations of a first volume for data read/write by an external device. The first data protection area is inaccessible to the external device. A second storage device coupled to the first storage device. The first storage device creates a second volume for storing a backup image of a particular generation of the plurality of generations of backup images stored in the first data protection area. The second storage device creates a third volume for storing the copy data, and a virtual volume that is mapped to the second volume of the first storage device. The second storage stores the backup data of a specific generation stored in the second volume in the third volume via the virtual volume by forming a pair that copies the data in the virtual volume and the third volume.