Good afternoon

I currently operate a two node DAG in our primary site supporting one mailbox database. I plan to introduce a third DAG node in our datacenter which is in a different Active Directory site. Both current DAG members replicate over a dedicated replication network to keep the traffic separate from the MAPI traffic. The third DAG member will also have a dedicated replication network adapter (of course, on a different subnet). Ideally I would like to seed the database at a time of my choosing, rather than at the moment I add the mailbox database copy (I know how to achieve this), but I would like to specify which network the data replicates over.

According to the following (see below link) under the 'Seeding and Networks' section as my two DAG members will be on different subnets in different sites Exchange will make the decision to use the MAPI network adapters of the target and source server.

'If the source server and target server are on different subnets, even if a replication network that contains those subnets has been configured, the client (MAPI) network will be used for seeding.'

http://technet.microsoft.com/en-us/library/dd335158%28v=exchg.150%29.aspx

Am I able to force Exchange to use the replication network adapters of both source and target server when I initiate the seeding process? I have a 200+ GB mailbox database that will need to replicate over a 100Mbps internet connection to our secondary site and I would like to keep that traffic to the replication network I have configured.

Any insight would be helpful.

Hi george ,

Step1 : If you don't want the mapi networks to be used for replication you can simply disable the replication on the MAPI network cards

Get-DatabaseAvailabilityGroupNetwork  | fl name,*replication*

Set-DatabaseAvailabilityGroupNetwork -Identity "DAG1\DAGNetwork01" -ReplicationEnabled:$false

Step2 : As said by Belinda ,You can use the network parameter while seeding the database by using the update-mailboxdatabasecopy

Please feel free to reply me if you have any queries.

Regards

S.Nithyanandham

Hi

Thanks for the responses so far.

I am not currently replicating the MDB copy between the two DAG members over the MAPI network. The replication is occurring over a dedicated replication network. This is the output from the 'Get-DatabaseAvailabilityGroupNetwork' command:

[PS] C:\>Get-DatabaseAvailabilityGroupNetwork | fl Name,Subnets,MapiAccessEnabled,ReplicationEnabled


Name               : MapiDagNetwork
Subnets            : {{10.10.99.0/24,Up}}
MapiAccessEnabled  : True
ReplicationEnabled : False

Name               : ReplicationDagNetwork01
Subnets            : {{10.10.38.0/24,Up}}
MapiAccessEnabled  : False
ReplicationEnabled : True

What I am asking is that if I do not initially seed the MDB copy when creating it on the third server I introduce, do I then run the 'Update-MailboxDatabaseCopy' using the '-Network' parameter on the third server and then run 'Resume-MailboxDatabaseCopy' on the third server (as I am assuming it will suspended due to me setting the 'postpone seeding' option in the ECP when creating the MDB copy on the third server)?

Regards