IBM PowerHA SystemMirror for AIX Cookbook

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High availability components

PowerHA uses the underlying cluster topology (the nodes, networks, and storage) to keep the cluster resources highly available.

This chapter contains the following topics:

•PowerHA configuration data

•Software components

•Cluster topology

•Resources and resource groups

•Smart assists

•Other features

•Limits

•Storage characteristics

•Shared storage configuration

•PowerHA cluster events

2.1 PowerHA configuration data

The two main components to the cluster configuration are as follows:

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