Hi Patrick,
Because new and old machines are same numbers you will have resources to temporarily run all guests only using new machines, so my safe and boring approach would be:
build new 3 node cluster connected to switches
setup up and test...
I think you have a misconception of what an appliance is (or rather, what seperates an appliance from a managed software stack.)
an appliance doesnt NEED backing up. its an appliance. restoration of a failed appliance is just redeploying it.
In...
What features are you setting up on your hosts that are such great effort to deploy? Can you give specifics?
My $.02, ymmv.
As someone who recently migrated and expanded from a 3 node Vsphere cluster to 5 node Proxmox cluster and moved from...