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. 08, 2020
Filed:
Mar. 15, 2019
Applicant:
Hitachi, Ltd., Tokyo, JP;
Inventors:
Koki Matsushita, Tokyo, JP;
Toru Suzuki, Tokyo, JP;
Takahito Sato, Tokyo, JP;
Atsushi Oku, Tokyo, JP;
Assignee:
HITACHI, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/06 (2006.01);
U.S. Cl.
CPC ...
G06F 3/0647 (2013.01); G06F 3/0604 (2013.01); G06F 3/0644 (2013.01); G06F 3/0683 (2013.01);
Abstract
The first to third storage apparatuses each comprise an SVOL, SVOLand PVOL. Even when the write command designates any of the PVOL, SVOLand SVOL, at least one of the first to third storage apparatuses writes write target data according to the write command to the PVOL and then writes the write target data in parallel to the SVOLand SVOL. Even if a read command designates any of the PVOL, SVOLand SVOL, at least one of the first to third storage apparatuses reads read target data according to the read command from the PVOL.