Seeing what other people think here, as we are building out or DR strategy.
What we have is two clusters (Nutanix/AHV) each in different data centers. They are connected with a dedicated line provided by our ISP, so think of it is a really long 1g connection between 2 switches and on the other side of each switch is the cluster and other hardware. So we have two different external IP's, two sets of identical everything. We have a VPN to someone else coming from a (example) 126.96.36.199 server IP.
My quesiton is what would be some good ideas and thoughts on my two different methods.
Keep the same IP's for everything and change the routing for external connections, update our external DNS and then have the VPN change external interfaces its looking for.
Cons: Since it is the same VLAN on both ends the vlan would only be able to be connected one site at a time and we would have to wait for them to swap to the other VPN.
Method 2: Have the protection domain Re-IP everything to a already existing 188.8.131.52 network when it moves over.
Pros: The vpn would always be up and already be configured to allow connections from 184.108.40.206 and 220.127.116.11, so this would basically not be an issue anymore.
Cons: Re-iping the AD servers sounds like a lot of problems, and how would AD/DNS (hosted on a windows AD/DNS server) work, or would all the entries and A records have to be manually changed?
Im am sure there is something i am overlooking, and any input would be nice.