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. 01, 2011
Filed:
Aug. 25, 2009
Jun Nakagawa, Kawasaki, JP;
Takahiro Kojima, Kawasaki, JP;
Ryuji Maruyama, Kawasaki, JP;
Shinji Yamauchi, Kawasaki, JP;
Keiji Sakai, Kanazawa, JP;
Jun Nakagawa, Kawasaki, JP;
Takahiro Kojima, Kawasaki, JP;
Ryuji Maruyama, Kawasaki, JP;
Shinji Yamauchi, Kawasaki, JP;
Keiji Sakai, Kanazawa, JP;
Fujitsu Limitd, Kawasaki, JP;
Abstract
When a first server node fails in a cluster system, a client node device transmits failure detection information to a second server node device. Upon receipt of the failure detection information, the second server node device transmits a survival confirmation request to the first server node device. When receiving no survival confirmation response from the first server node device, the second server node device determines that the first server node device has failed and starts the switching control of a server node device which performs a service process. Upon receipt of failure detection information, the second server node device starts switching control when further receiving failure detection information from another client node device.