Auto discovery in a replication environment
In a replication environment, psupdate should only run on one server for all nodes in the environment. You can select the server on which to run the scheduled psupdate. The psupdate job executes on the configured server and then all updates replicate to all nodes.
Once psupdate has run locally, it may take some time for the data gathered by psupdate to replicate to all nodes. During this period, users can still use the primary server but other nodes might take time to receive updates.