Exchange 2010 SP3

I have an Exchange environments consisting of 2 DAG's, and 2 CAS servers one in each of 2 datacenter sites.  I also have a standalone server for exchange native archiving.  Can the standalone Exchange server be added to one of the DAG groups with live mailbox databases on them? I've never added a server to a DAG with live mailbox databases on them.
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Abdul Khadja AlaoudineTechnical ConsultantCommented:
Yes, the standalone Exchange server can be added to one of the DAG group with live mailbox database on it. It will not cause any harm to the live mailboxes or the server.
Gareth GudgerSolution ArchitectCommented:
Normally, yes.

But l don't want to make assumptions. Is the standalone Exchange box on the same operating system as the two existing DAG members. If not, it needs to be.

Make sure the Exchange servers, including the standalone, are all at the same patch level before doing this.
georgedschneiderAuthor Commented:
All of the database servers are running Server 2010 R2 running Exchange 2010 SP3.  The servers in each site running the CAS/HT roles are on server 2008 but I don't believe this comes into play in with regards to a DAG.
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Gareth GudgerSolution ArchitectCommented:
Do you mean Server 2008 R2? There is no Server 2010 R2. And Exchange 2010 is unsupported on Server 2012 R2.

As long as the standalone is running the exact same operating system as the current DAG members you can add it to the DAG.

Its literally just a matter of going to Organization Config >> Mailbox >> Database Availability Group. Selecting your DAG and right clicking to Add Members.

You may also want to verify the NICs on the servers. Confirm if the existing DAG members have two NICs and whether the standalone does. They don't need it. But if the members have it, then are probably using a dedicated replication network.

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georgedschneiderAuthor Commented:
I see 2 DAG networks for the Database Availability groups called DAGNetwork01 and DAGNetwork02.  Both of which have replication enabled.  I'm assuming this means there is no dedicated replication network and the MAPI and replication is the same.
Gareth GudgerSolution ArchitectCommented:
Can you post a screenshot?

You always want replication to occur. So chances are replication is enabled on both. Its just that MAPI is likely only configured \on one -- the NIC that has the gateway configured. By default Exchange should always push replication traffic on the NIC where there is no gateway assigned.
Abdul Khadja AlaoudineTechnical ConsultantCommented:
Replication is configured to happen on both the networks. Assuming networks are configured correctly you can disable replication on MAPI network.
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