How to confirm new 3.5 deployment works?

Hi Guys,

We just deployed new 3.5 appliance and running it in parallel with existing 3.3.3; all settings, customers and rules were imported to new installation.

We plan to cutover to new appliance on January 1st. Shutdown and archive old appliance at the same time.

What is the way to confirm new appliance is fully functional and VMware gets all the usage it expects? We don't want any surprises with the new install.

Thanks!