During the operation of the server, you might encounter faults or errors if you perform certain tasks, especially before, during, or after an SP failover or a power cycle. The power cycling issues might result in either the start /Servers/PDomains/PDomain_x/HOST or the stop /Servers/PDomains/PDomain_x/HOST operation failing to make progress.
You must prepare the system for failover before you manually initiate an SP failover (refer to Prepare to Remove an SP in the SPARC M8 and SPARC M7 Servers Service Manual).
Initiate an SP failover using the Oracle ILOM CLI only when the host is powered off. In addition, if you use the Oracle ILOM web interface to initiate the SP failover, be aware that the web interface method does not always work properly. In this case, use the Oracle ILOM CLI.
If the host is in a power cycle, wait until the power cycle is done before you initiate an SP failover.
If you change the IP address on the SP interconnect from the default to another address, the connection between the host and SP might not be correct after an SP failover. Hosts must use the default IP address for the SP interconnect.
Before you install a new CMIOU, stop the host, and do not perform an SP failover.
If a host hangs in the warm start state, the hang might be due to an automatic SP failover.
You might encounter errors or faults if you try to start multiple hosts in parallel, particularly following an SP reset or SP failover.
If the list of faulty components is not complete after an SP failover, reset the ip-transport connection to cause the list of faults to be replayed.
If the host does not use the default IP addresses for the SP interconnect, the connection between the host and SP might not be correct after an SP failover. Hosts must use the default IP address for the SP interconnect.
You can ignore or manually acquit certain faults, messages, and event list entries.
Start hosts manually only after the system startup process completes.