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. 21, 2017
Filed:
Mar. 27, 2014
Applicant:
Hitachi, Ltd., Tokyo, JP;
Inventors:
Misato Yoshida, Tokyo, JP;
Mitsuo Hayasaka, Tokyo, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 15/173 (2006.01); G06F 3/06 (2006.01); H04L 12/24 (2006.01); H04L 29/08 (2006.01); G06F 12/00 (2006.01);
U.S. Cl.
CPC ...
G06F 3/0641 (2013.01); G06F 3/06 (2013.01); G06F 3/065 (2013.01); G06F 3/067 (2013.01); G06F 3/0608 (2013.01); G06F 3/0619 (2013.01); H04L 41/0213 (2013.01); H04L 67/1095 (2013.01); H04L 67/1097 (2013.01);
Abstract
The present invention provides a storage system capable of performing deduplication among nodes in a cluster configuration with a low overhead. The respective nodes mutually monitor whether there is update of deduplication information in other nodes. When it is determined in its own node that there is update in another node, it reflects the update information in another node to the deduplication information of its own node. Then, each node uses the deduplication information having reflected the deduplication information of other nodes to perform deduplication of the storage data of its own node.