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:
Mar. 03, 2015
Filed:
Jun. 11, 2012
Applicants:
Junichi Iida, Odawara, JP;
Naoki Moritoki, Ooi, JP;
Inventors:
Junichi Iida, Odawara, JP;
Naoki Moritoki, Ooi, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 1/24 (2006.01); G06F 1/30 (2006.01);
U.S. Cl.
CPC ...
Abstract
A disk subsystem and a data restoration method with which the rise time when the disk subsystem is restored can be shortened. A disk subsystem and data restoration method whereby, when the power of the disk subsystem is shut off, the shared memory management table is saved to non-volatile memory together with the cache data and, when the power of the disk subsystem is restored, the shared memory management table is referenced and the duplex data is assigned by two non-volatile memories and restored to each of two shared memories.