I have the need to add 2 AD servers to our domain but at each of these particular sites would like DNS to be stand alone (not AD integrated). I can't say I have every tried this before as I have always made my AD servers AD Integrated DNS servers as well. I have already built the first server and did NOT select to install DNS during DCPROMO but rather install DNS after. It automatically integrated with DNS. How can I remove the AD Integration piece of AD without screwing anything up? And/or any thoughts on how to build this out? Thanks in advance.
It is not the service itself where you can choose whether to integrate with AD or not - it is the zone. Basically, what you are setting there is the storage location for the zone. An AD-integrated zone is stored within the Active Directory store (more precisely within a separate partition of the LDAP directory which is part of the AD). A non-AD-integrated zone is stored in BIND-style files on the filesystem.
After you've created a zone, you simply can set the type and storage location by editing its properties:
Note that with an AD-integrated zone setups, all your zone copies are writeable, i.e. they are all considered "primary". With a non-integrated setup, only a single zone is writeable, so only this can be updated using DNS dynamic update mechanisms. If the server holding the primary zone copy is offline, updates can no longer be performed to the zone until you designate another server as "primary".