Cluster system and node switching method

Details Cluster system and node switching method Cluster system and node switching method

2009-08-25

2011-11-01

McCarthy, Christopher (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

Reexamination Certificate

active

08051321

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.

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Japanese Patent Office; Notice of Rejection Ground for corresponding JP Application No. 2009-501033; mailed Mar. 2, 2010.
Notice of Rejection Ground issued by the Japanese Patent Office for Japanese Patent Application No. 2009-501033, mailed Jun. 8, 2010 (with English language translation).
Notice of Rejection Ground issued by the Japanese Patent Office for Japanese Patent Application No. 2009-501033, mailed Oct. 26, 2010 (with English language translation).

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