Hi All,
We're running Hyper-V R2 clusters with the following network config,
Host management (enabled for cluster communication) - single NIC (integrated adapter)
CSV and heartbeat - single NIC (integrated adapter)
Live migration (not enabled for cluster communication) - single NIC (add on)
VM production network - 2 teamed NICs (integrated and add on port)
Here's the situation, when we had the host management NIC lose network connectivity and we tried to move running VMs to the other nodes, Live migration and quick migration wouldn't work 'says RPC server unavailable'. The Live migration NIC is chosen as the first preferred network with the CSV and heartbeat as the second preferred. Host management NIC isn't enabled for live migration. Live migration only worked once we got the host management network back online.
My questions,
Why is host management network connectivity needed for live migration to work? looks like the source and destination nodes need domain access (authentication?) for live migration to work.
Which network should be the second preferred network for Live migration? As far as I know, private networks are preferred. What is the recommendation here.
Thanks for your help in advance.