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:
Jun. 17, 2025
Filed:
Sep. 06, 2023
Hitachi, Ltd., Tokyo, JP;
HITACHI VANTARA, LTD., Kanagawa-Ken, JP;
Abstract
A processor inputs/outputs data related to data input/output with respect to the volume to/from a page of the logical storage area; maps the volume to data of the logical storage area; is able to release the storage area in units of the pages; includes a plurality of the volumes that can share data of the logical storage area; performs garbage collection of deleting data which is not referred to from any of the plurality of volumes as invalid data, moving data which is referred to from any of the volumes to another page, and releasing a storage area of a page on which the data is deleted and the data is moved; and stores a plurality of pieces of data in the page of a movement destination such that the plurality of pieces of data stored in the same page is mapped from a same volume by the garbage collection.