Our company is experimenting with a virtualized deployment of a legacy application. At install, we set grub.conf to a default terminal of COM1 so our management multiplexer living at the other end of a serial cable can control multiple servers at once.
We've virtualized the serial communication using a Digi PortServer. Installation of the PortServer software creates, for an eight-port example, devices /dev/ttyA00 through /dev/ttyA07.

I cannot figure out how to get grub.conf to push to /dev/ttyA##. Does anyone have a solution using my current configuration or moving to a different configuration?

relevant /etc/grub.conf...

serial --unit=0 --speed=9600
terminal --timeout=2 serial console

This is how we push to /dev/ttyS0 in a non-virt environment. I haven't been able to figure out how to use /dev/ttyA## instead of /dev/ttyS#. I'm not even sure this will work, since the Digi drivers aren't loaded until udev initializes. I've experimented with symlinks and piping, but I haven't found the right combination, yet.

Thoughts?