Failover system and method for cluster environment

Details Failover system and method for cluster environment Failover system and method for cluster environment

2007-10-09

2007-10-09

Bonzo, Bryce P (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C718S105000

Reexamination Certificate

active

11188327

ABSTRACT:
A failover method and system is provided for a computer system having at least three nodes operating as a cluster. One method includes the steps of detecting failure of one node, determining the weight of at least two surviving nodes, and assigning a failover node based on the determined weights of the surviving nodes. Another method includes the steps detecting failure of one node and determining the time of failure, and assigning a failover node based in part on the determined time of failure. This method may also include the steps of determining a time period during which nodes in the cluster are heavily utilized, and assigning a failover node that is not heavily utilized during that time period.

REFERENCES:
patent: 6842896 (2005-01-01), Redding et al.
Configuring GroupWise with Netware Cluster Services, www.nevell.com, Posted Dec. 8, 1999.
Identify Managed Computers and Install Agents, www.microsoft.com, 2007.
Kaufmann, Russ, “Cluster Help”, Sep. 27, 2006.

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