Domains are administrative and replication boundaries, not site boundaries. That's what Active Directory Site objects are for.
Everyone should have the AD deployment guide bookmarked. It answers 99% of the design questions asked on this list. Here is the relevant section you are looking for: Creating a Domain Design http://technet2.microsoft.com/windowsserver/en/library/60b6817e-4123-4bb0-8646-964c83b2e3281033.mspx?mfr=true To answer your question - in the absence of any other factors, you need one domain. Cheers Ken From: Oliver Marshall [mailto:[EMAIL PROTECTED] Sent: Tuesday, 22 January 2008 10:20 PM To: NT System Admin Issues Subject: Child domains rule of thumb Is there a general 'rule of thumb' as to when you should use child domains in multiple site setups? If you have two sites, A and B, joined by a VPN, each planning on have a Windows server running a GC, is it 'best' to have each setup as a child domain (ie server1.A.mydomain.com and server2.B.mydomain.com etc) or is it 'best' to have them running as one domain (ie server1.mydomain.com and server2.mydomain.com) etc ? Olly ~ Upgrade to Next Generation Antispam/Antivirus with Ninja! ~ ~ <http://www.sunbelt-software.com/SunbeltMessagingNinja.cfm> ~
