Preserve mac option during replication

[morciod]

Does Veeam preserve the mac address for replicated systems? is it an "optional' or "overridable" parameter?

[Gostev]

Currently it is not preserved, but the corresponding feature should make it into v6.

[jonhsykes]

And how does 9.5 handle this today? I have replicated VMs from Hyper-V 2008 R2 to 2012 R2. Some of the MACs are preserved, some of them are not. What is the logic to determine if preserved?

[foggy]

Hi Jon, basically, MAC addresses should be preserved. If you see this does not happen, please open a case with technical support.

[jonhsykes]

Hi foggy, thank you! This is good news as it helps in a large data center migration. I opened a support case yesterday and received the following response "The MAC address should remain the same unless hypervisor detects a MAC Conflict in which case, the vNIC is reconfigured with a new MAC Address."

I am replicating VMs across different clusters and don't know how a mac conflict would be detected.

History
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With that said, I replicated all VMs from "cluster 1 (source)" to "cluster 3 (target)" and macs were preserved.
I then replicated all VMs from "cluster 2 (source)" to "cluster 4 (target)". During this replication some of the macs were preserved while others were NOT.

[foggy]

Please investigate with technical support.