Moving from Viprion to rseries

You can still use exactly the same config if you wish ie partitions/RDs on a single tenant. Present all of the VLANs to the tenant and allocate them to the RDs as before.

It is your choice how to migrate these - you can do it all together, as a 'big bang' which is fast and easy but risky, or move them one RD at a time, or even one application at a time. It all depends on your own risk appetite. In PS we do these migrations all the time, I always make sure i have ways to check whether things are working, the current status, etc. And get buy-in from the rest of the business about how to migrate ie tell them about the risk, get them to decide and/or agree. Expect minor issues such as monitors, firewall rules etc