For more information about connecting to remote support using the telephone and modems, see
“Configuring the HMC network types” on page 50.
Using multiple call-home servers
This topic describes what you need to know when you decide to use more than one call-home server.
To avoid a single point of failure, configure the HMC to use multiple call-home servers. The first
available call-home server attempts to handle each service event. If the connection or transmission fails
with this call-home server, the service request is retried using the other available call-home servers until
one is successful or all have been tried.
The connected HMC that has been identified by problem analysis to be the primary analyzing console for
a given managed system will report the problem. This primary console will also replicate the problem
report to any secondary HMC. This secondary HMC must be recognized on the network by the primary
HMC. A secondary HMC is recognized by the primary HMC as an additional call-home server when:
v The primary HMC is configured to use "discovered" call-home servers and the call-home server is
either on the same subnet as the primary HMC or it manages the same system
v The call-home server has been manually added to the list of call-home server consoles available for
outbound connectivity
Preparing for HMC configuration
Use this section to gather required configuration settings that you need to know before you begin the
configuration steps.
Note: Additional connectivity and security information is available. For more information, see HMC
Connectivity Security
Preinstallation configuration worksheet for the HMC
Use this worksheet to have the installation information you need ready for the installation.
16 Power Systems: Installing and configuring the Hardware Management Console
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