We have purchased a company.
We will be migrating them to our network.
They have 4 servers, 2 AD(global catalogs, child DCs (allcounty.local domain), the main AD for allcounty.local is within different network over VPN, we have no control over it), 1 Citrix Server and it is a member server from allcounty.local, 1 Phone system server, not a part of domain.
We will be replacing the firewall with our own, settings up our own VPN to our main location.
What would be the correct way to migrate the domain.
Disjoin all the PCs from the domain
Demote AD(global catalog) AC-DP-FP_SRV to a member server, then disjoin from allcounty.local domain.
Demote AD(global catalog) ACSQL3_SRV to a member server, then disjoin from allcounty.local domain.
Disjoin CitriXServer from the allcounty.local domain.
1. After we do that is it better to create a new domain, and create a trust relation ship between our mail domain (tully.tullyconstruction.com) and this one (earthcareny.local)?
2. Or promote one server (AC-DP-FP_SRV) as a child DC(global catalog) server?
3. Or just make the server a member server for our main domain (tully.tullyconstruction.com)?