We are opening a disaster recovery location soon, in a remote datacenter. We are using san replication, vmware vmotion, etc. These sites will be connected initially using ipsec vpn and later some mpls avpn solution from AT&T. That could take a while though.
We have hired consultants to help us with this, but they have not been very helpful.
I'm new to DR and san replication, so I have a couple questions. Obviously if our servers are being replicated, they have the same private ip addresses. When I set up the vpn, is this going to cause problems? The fact that we will have the same ip scheme on both sides? If so, what is the usual way to remedy this?
Also, we will have two redundant switches at each location connecting the sans. San controllers A &B on both sides will have their own vlans, and they all need to be able to route to each other. I've set it up on layer 3 switches so that A&B can route to each other, but how will A & B on the DR side route to A & B on the office side? Is it just more static routes that are needed?