You must decide which console to use to start your system:
Using the HMCS console for initialization
The HMCS console can be used to IPL z/OS. Use of the system console
or NIP consoles defined in HCD is not required when using HMCS consoles
to IPL. If the HMCS console is not available, z/OS looks in the IODF
for devices to be used as NIP consoles.
Using the MCS console for initialization
In HCD, you can specify a list of device numbers to use
as NIP consoles. The initialization programs use the first online
and ready device in the list. NIP consoles must be devices that are
locally connected to the system using control units that do not support
systems network architecture (SNA) protocols. This means that SMCS
consoles cannot be used as NIP consoles. If that device is also specified
on a CONSOLE statement in CONSOLxx, it is initialized as an MCS console
and appears to change to an MCS console when console initialization
is complete. If no NIP consoles are defined, or no NIP consoles are
online when MVS™ is loaded, MVS tries
to use the system console during initialization.
Using the system console for initialization
If neither the HMCS or MCS console is available, the system console
is used to initialize the system. The system console is located on
the Hardware Management Console (HMC), where you load the system software
and specify the LOAD parameter. Then you use this console to initialize
the system. The initialization programs might require setting initial
values, specifying an alternate master catalog, and setting the time
and date.