Using GTM with TIBCO EMS Fault tolerant solution

Q: The client application is pointing to DC-1 EMS pair. When Both the EMS servers on DC-1 are unavailable (both host 1 and host 2 are down ) then we would like to do a DNS switch / ip switch using F5 to EMS pair in DC-2 is this possible ?

A: Yes it's possible with the GTM/LTM setup.

Q:What DNS infrastructure needs to be used for with in the same data center and what needs to be used for the shift between DC-1 and DC-2.

A: I in my mind it's recommended that you have an LTM in each datacenter. However, the GTM can be located in different areas and they would be authoritative of domain you can use against the virtual addresses within DC-1 and DC-2. All systems to be routable with each other.

I hope this helps

Bhattman