This is really for Ex 2010; but it's relevant for both 2010 and 2013; so I'll ask it here:
My backup guys want a separate network for taking backups. That's fine by me; so I've set up a separate NIC with a static IP on both members of a two node DAG. Changed the bindings, so far so good.
But they also want a separate IP on the backupnetwork for the actual DAG. And from what I know, and what I've managed to find, that's not a supported configuration; since you would have no way of separating the client traffic on mapi and backup networks. Two IPs and what's what, right?
Anyway. Is this doable?
I've gotten stuck on this blogpost: http://blogs.technet.com/b/timmcmic/archive/2011/10/25/exchange-2010-implementing-a-dedicated-backup-network-for-a-database-availability-group.aspx
Which basically says no. You have to use the address on the MAPI network to connect to the DAG; and then manipulate (either host file or DNS) the backupservers resolution of the servers, so that they connect using the backup IP.
Am I way off base here?