VMM 2012 R2 - Default MAC Address Pools

Question

We have two VMM servers at different sites but on the same network subnet.
Having deployed virtual machines from both VMM servers we have experienced a number of instances where the same MAC address has been allocated to more than one virtual machine (same MAC allocated by each VMM Server).
Consequently, I would like to split the current Default MAC Address Pool range and allocate half to each VMM server.
The documentation suggests that the current "Default MAX Address Pool(s)" should be deleted before the new custom pools are created.
We have already deployed a large number of virtual machines from each VMM server.
Does the deletion of the "Default MAC Address Pool(s)" have any impact on the existing virtual machines with MAC addresses assigned from the default pools?
Will the virtual machines retain there existing MAC addresses or will they be re-allocated new MACs?

Answer 1

Does the deletion of the "Default MAC Address Pool(s)" have any impact on the existing virtual
machines with MAC addresses assigned from the default pools?
Kind of, you cant delete the "Default MAC Address Pool" while VM's have allocated MAC's.
You can revoke MAC's using the "Revoke-SCMACAddress" cmdlet
Will the virtual machines retain there existing MAC addresses or will they be re-allocated new
MACs?
I would probably choose to first give the VMs MAC addresses from the new pool, then delete
the default pool.
You will need to grant your VMs with new MAC addresses using the Grant-SCMACAddress
cmdlet.