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Exchange Server DAG mailbox server VMware network configuration

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Last Modified: 2017-03-20
Hi All,

I'm about to deploy Exchange Server 2013 SP1 in a DAG configuration on VMware ESXi server DRS cluster.

As per my understanding, the requirement is 2x vNICs:

1x vNIC - RPC over HTTP (Outlook client connection)
1x vNIC - DAG replication between servers (separate VLAN or IP address class or non-routable)

So my question is that, do I need to use 2x vNIC like the above or can it be just one vNIC ?

If two vNICs is required, How do I configure the vSwitch on each of the ESXi servers in DRS cluster so that the secondary vNIC that is only used between DAG mailbox server can still be functioning in the event of vMotion or Fully automatic DRS rebalancing.

Thanks in advance
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OK, so if one vNIC is enough, then what's the consequence or caveats in using IP-less DAG ?

my backup software is Veeam and they support it.
SaberSupport Escalation Engineer
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Hi Saber,

Based on this document: http://www.vmware.com/content/dam/digitalmarketing/vmware/en/pdf/solutions/vmware-microsoft-exchange-2013-best-practices-guide.pdf on page 18, it says that it requires two vNICs for DAG ?

Is it no longer mandatory for the new IP-less DAG deployment ?
I assume that with the IP less DAG there is no need to create MSCS or FailOver clustering from the OS level ?
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Thanks !
Senior IT System EngineerSenior Systems Engineer
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Hi Saber,

Does placing the Log files for Exchange DAG member really matters or not ?

I know that the mailbox DB must be on the same drive letter. But how about the log files ?

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