I use VBox, in windows, to run ArcaOS. The default settings, for OS/2 4.5, in VBox are ridiculous, but easy to change to something reasonable. Once you get a reasonable machine configured, it is easy to install ArcaOS (use Modern, not Virtual), and tweak it from there. The Virtual Machine config, in the ArcaOS installer, does work fine with the default VBox settings for OS/2 4.5, but the performance is dismal. Network support is as simple as starting the ArcaMapper app, and attach the resources that you want.
Somewhere, I posted instructions, but I can't find that now. The instructions were actually for eCS, but ArcaOS is pretty much the same thing.