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. 28, 2021
Filed:
Sep. 13, 2019
Hitachi, Ltd., Tokyo, JP;
Hitachi Information & Telecommunication Engineering, Ltd., Kanagawa, JP;
Junji Ogawa, Tokyo, JP;
Shigeo Homma, Yokohama, JP;
HITACHI, LTD., Tokyo, JP;
HITACHI INFORMATION & TELECOMMUNICATION ENGINEERING LTD., Kanagawa, JP;
Abstract
A storage system including a storage controller for compressing a data from a host and a plurality of nonvolatile memory drives for writing the compressed data. The storage controller provides the host with a first logical address space as a logical storage area and includes a plurality of first physical address spaces corresponding to the first logical address space and manages storage areas of the plurality of nonvolatile memory drives. Each of the plurality of nonvolatile memory drives includes a second physical address space that manages a physical storage area of the nonvolatile memory and a second logical address space that corresponds to the second physical address space and to each of the plurality of first physical address spaces. The second logical address spaces and the first logical address space are managed with a common size and a common management size, and leading addresses are aligned with the management size.