I'm currently in the middle of a Disaster Recovery non-functional test. We have an isolated VLAN setup that will not affect production. We have failed over a large number of production servers and two domain controllers using site recovery manager. Each domain controller is part of an different Forest namespace. Before SRM each domain controller had it's DNS information updated in the Advanced TCP/IP Settings for the network adapter.
DNS server addresses, in order of use
IP Address (Current Production IP Address
IP Address (DR IP Address that will be used once the Domain controller has been replicated using SRM)
IP Address (Of another production Domain controller
IP Address (Local Host IP Address 127.0.0.1
We can logon one domain controller but can't logon to the another. The logon is using hanging at Welcome then times out. I've attached a print screen. The following registry fix was also applied to production before replication.