Exchange 2010 backup to appliance over backup network
Among others, I've reviewed the technote Marianne vdB mentioned in this post. But I must not be understanding the process properly. I have a new appliance (5220) just for Exchange backups. This is the first non-Windows backup device in my environment.
The Exchange 2010 DAG member servers have the 126.96.36.199 client installed. I just upgraded my existing Windows Server 2008 master and media servers just yesterday. The appliance is running 188.8.131.52 as well.
Originally the appliance was configured to only communicate with the mailbox servers over the backup network. The backup job was ending with status 26 until I added the prod IP for the DAG to the appliance. Now the appliance can successfully query the DAG but the data will only move over the prod network.
The DAG only has a prod IP. The Exchange team says a second IP cannot be added to the DAG. I have NIC's configured on each mailbox server for the backup network. Host file entries for the appliance and its backup network IP are on the mailbox servers.
What am I missing?