None of the Windows side of that is tremendously far-removed from today.
Syteline... Progress... Ugh. I'm having trouble overcoming the violent undulations of my spleen. So many memories of performance issues, "dump and reload" of databases, and Progress clustering issues (though that was with QAD ERP and not Symix/Syteline).
That was precisely my thinking behind doing this. I don't get to deploy server core particularly often so building a lab around using it specifically felt cool, but all of the processes/methodologies around deploying those systems carries forward well enough.
Your Syteline experience mirrors mine haha, but since it's a lab I'm hoping I won't run into too many errors.