Phased upgrade example
In this example, you have a secure cluster that you have configured to run on four nodes: node01, node02, node03, and node04. You also have four service groups: sg1, sg2, sg3, and sg4. For the purposes of this example, the cluster is split into two subclusters. The nodes node01 and node02 are in the first subcluster, which you first upgrade. The nodes node03 and node04 are in the second subcluster, which you upgrade last.
Figure: Example of phased upgrade set up
Each service group is running on the nodes as follows:
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sg1 and sg2 are parallel service groups and run on all the nodes.
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sg3 and sg4 are failover service groups. sg3 runs on node01 and sg4 runs on node02.
In your system list, you have each service group that fails over to other nodes as follows:
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sg1 and sg2 are running on all the nodes.
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sg3 and sg4 can fail over to any of the nodes in the cluster.
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