DFS Implementation on a Parent and Child Domain

I think you should be okay with this.  The DFS root will be anchored in one of the domains, there are transitive trusts in place by default, and you can select any server to be a replica as long as DNS is working.  Therefore your clients will access with \\domain\DFSshare - this might be an issue for the Executives if the parent doesn't host the root since they may not like to see \\childdomain\DFSshare.

This may be the only thing you need to deal with - DNS.  You can make ALL zones AD Integrated, then change the scope to be "All DNS servers in the Forest".  This will replicate all zones to all DNS servers and give you 100% resolution for the entire Forest regardless of domain.

Netman

I added the 2 DCs in the parent domain as root targets and configured the replication.Now I can't add the server from child domain to the DFS as a another root target.
Is there way that I can setup replication WITHOUT ADDING as a root targets.

Yes.

In one of the targets, you can select to add a replica.  This should allow you to pick any share on any server that has the proper permissions.

You should only create one root, then a target, then add some replicas.  Unless you need more than one root target.

Netmann

I created a Single root with a single target .How can I add replicas.When I right click on the Root it doesn't give me the option to add replicas

Netmann

Sorry for the double post."In one of the targets, you can select to add a replica" where can I select to add the replica.