Our company is moving across town to a new office/warehouse space. The offices (including the data center) are scheduled to move mid-September, and the warehouse operations in late Oct/early Nov. We have internet connectivity at both facilities and tomorrow will be setting up the site-to-site VPN on our WatchGuard firewalls.
I plan on leaving one of our DCs with DNS, DHCP, and print queues at our current location to reduce response time for those functions for the warehouse users on the subnet here. My question is, do I really need to set up an additional site in AD, since we will only have two locations for about two months? Or should I just go with renumbering the servers in the new building with a new subnet and a new DHCP server for that location, and let the router/firewalls handle stuff based on IP traffic? I understand AD replication traffic might be a little higher without setting up unique sites, but we generally don't have a lot of AD change activity (only about 130 users in the forest) so I don't see AD replication choking out WAN connection.
Any thoughts or advice appreciated.