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:
Jun. 13, 2006
Filed:
Mar. 04, 2004
Tomohiro Shinohara, Yokohama, JP;
Hodaka Furuya, Yokohama, JP;
Yoji Sunada, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
It is an object of the present invention to allow easy upgrading of the version of the OS in a failover cluster system. When the user mounts a storage mediumon the node, and gives instructions to install a program, the installation programrequests the failover programfor the stopping of heartbeat communications. The nodevoluntarily stops heartbeat communications in a state in which the system of this node is operating normally. When the failover programof the nodedetects the stopping of heartbeat communications, this program starts failover, and takes over the business service of the node. During the execution of failover by the node, the program stored in the storage mediumis installed in the node. When this installation is completed, the nodetransmits a failback request to the node, and restarts the business service.