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:
Jul. 05, 2022
Filed:
Sep. 14, 2020
Applicant:
Hitachi, Ltd., Tokyo, JP;
Inventors:
Takeshi Oda, Tokyo, JP;
Takahiro Yamamoto, Tokyo, JP;
Assignee:
HITACHI, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 11/10 (2006.01); G06F 11/14 (2006.01); G06F 9/52 (2006.01); G06F 12/0842 (2016.01);
U.S. Cl.
CPC ...
G06F 11/1469 (2013.01); G06F 9/52 (2013.01); G06F 11/1076 (2013.01); G06F 12/0842 (2013.01); G06F 2201/82 (2013.01); G06F 2212/1032 (2013.01);
Abstract
In recovery processing, a distributed storage systemlocks a storage area in which user data for recovery that is user data serving as data for recovery is stored in drives, and releases the lock after caching the user data for recovery in a memoryof any of computer nodes. Then, the distributed storage systemrecovers recovery target data on basis of the user data for recovery cached in the memory. In write processing, the distributed storage systemupdates the user data for recovery cached in the memoryin accordance with a write request and then writes the user data in accordance with the write request.