Even though I am confident that I will be able to do this, I would still like some advice.
I need to demote our current secondary DC to a member server so I can remove and replace this server with a new server (this new server will then be promoted to be a secondary DC).
All FSMO roles are currently on the PDC.
Will I be able to demote the secondary dc while users are active on the domain? This secondary server is not being used as a file server, print server, etc. Only a backup DC/DNS server.
As well, after running the DCpromo what else needs to be done? Other than DNS record changes on the PDC.