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:
Nov. 16, 2021
Filed:
Mar. 02, 2020
Applicant:
Hitachi, Ltd., Tokyo, JP;
Inventors:
Hideyuki Koseki, Tokyo, JP;
Shugo Ogawa, Tokyo, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/06 (2006.01); G06F 11/10 (2006.01);
U.S. Cl.
CPC ...
G06F 3/0659 (2013.01); G06F 3/0616 (2013.01); G06F 3/0619 (2013.01); G06F 3/0653 (2013.01); G06F 3/0689 (2013.01); G06F 11/1076 (2013.01);
Abstract
To provide a storage device by which distribution of data to an added memory device may be carried out in a short period of time. In a case where any new SSD is added to the storage device, a storage controller carries out first data distribution processing moving any piece of user data in a parity group from existing SSDs to the added SSD and second data distribution processing increasing the number of pieces of the user data configuring the parity group from a first number to a second number after the first data distribution processing and storing the user data in a plurality of memory devices SSDs.