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:
Jul. 07, 2026
Filed:
Sep. 11, 2024
Hitachi Vantara, Ltd., Yokohama, JP;
Koji Hosogi, Tokyo, JP;
Kazuki Matsugami, Tokyo, JP;
Mutsumi Hosoya, Tokyo, JP;
Norio Shimozono, Tokyo, JP;
Shinichi Hayashi, Tokyo, JP;
HITACHI VANTARA, LTD., Yokohama, JP;
Abstract
A first storage system stores data related to execution of a first server in a logical volume, and transmits the data stored in the logical volume to a second storage system. The second storage system provides a virtual volume to the second server, and stores the data received from the first storage system in the virtual volume. The second storage system executes a process by using data stored in the virtual volume at each execution timing. Then, the second storage system determines whether the data stored in the virtual volume is left in the virtual volume or is discarded based on the presence or absence of an access and the type of access, which are access statuses to the data at each execution timing, and discards the data determined to be discarded from the virtual volume.