Has anyone tried this? My line of work allows us to place a server into an employee colo cabinet which I have recent done. I installed Server 2012 on it at the time but I am thinking I want to go to 2016+ but I also run several ARK game servers on that and would like to minimize downtime as there is almost always people on them. I have some shifts coming up overnight starting tonight and I figured if I can just go through an upgrade process that would be easier then reinstalling and doing all the updates etc. Advisable? other suggestions? Server config is an older Sun Oracle Sun Fire x4270 M2 if that matters.