Hi Igor very cool setup… but the only advantage i see when running on signal board PC is the power consumption(not a very big issue for me)
so i prefer a desktop PC… i have allot laying around office/home
as you can see OH is overkill for single board PC, so you can virtualize it very easy
and use the rest of the PC for other things… making OH as VM that can travel around very old hardware, is priceless for me … also i can perform backups and restores on the fly
what i want to say, we are each with our own unique issues /reality, its a good thing OH can run on all platforms 