Here is my setup:
3 Hyper-v Machines all running Server 2012 Standard and Exchange 2013 with CU1.
2 of the Hyper-V Machines are on 1 host server running Server 2012.
1 Hyper-V machine is on a Second Host server running Server 2008 R2.
They are all domain Joined computers (VMs and Hosts) and all on the same Lan network (10.0.0.0/24).
My Host machine with Server 2008 R2 has only 2 NICs. One is for the Physical server it self, the other is dedicated to Hyper-V.
The Host machine with Server 2012 Has 4 Nics, 1 is for the physical server itself, 1 is for Hyper-V, 1 is Connected Outside for another VM, the last is connected inside but not in use yet.
On Exchange I have Created a DAG. I have been able to join 2 of the Exchange servers to the DAG but the third fails to join. I have another post open on this issue already here: http://social.technet.microsoft.com/Forums/en-US/exchangesvrgeneral/thread/d4ce2aa8-91f1-4d1a-a4b1-647138bd98d1/
The other issue I have is that the database is not being replicated to the second server that is part of the dag. Since I am not using a Replication network at this time since I only have 1 nic available for Hyper-V I only have one DAG network (MapiDagNetwork).
I have added my 10.0.0.0/24 and it has added the network interfaces for both the servers. So that network appears to be up. The replication check box is checked.
However, I do not see the database on the second server. When I look at Servers > Databases in the ECP it says only the first server has a copy of the database. If I click on the ... and chose "add a database copy" I can add the server but the copy fails with the message:
error
The seeding operation failed. Error: An error occurred while performing the seed operation. Error: An error occurred while processing a request on server 'Ex-MBCAS1'. Error: Database 'bd5f38fe-0811-4635-9f48-96978fc1ca1a' was not active on source server 'EX-MBCAS1'.
[Database: Mailbox Database 2109510849, Server: EX-CAS1.MyDomain.local]
So What is causing this? Can replication even be done over the Mapi network? Do I have to have a replication network as well? If so considering my hardware what is the best way to do this? I thought about a Virtual switch but since one of the VMs is on another host I am not sure how to set that up. If I don't need the second network for replication I would rather not bother with it but if I do I will set it up, I am just unsure of the best way to go about it. Thank you for the help.