Re: Adding an offsite office to a domain
There are advantages and disadvantages. You will loose centralisation of control giving them their own DC. It would then need to have its own domain an forest. There would need to be IT staff at that site.
The main advantage would be that their equipment wouldn’t effect them logging on to the network. You could consider setting up a separate domain off yours and place the DC on their site. Give them their own GC and should the connection be up and down, they will still function. Also, there is the possibility of considering SMTP replication, since the other site will be a different domain. An unreliable internet (VPN) wouldn’t then be an issue. However, certificates would need to be set up for it.