We have a small SAN based on a 9140 switch. We need to expand and have purchased a 9509. I'd like to connect the switches, migrate the connections in my production VSAN onto the 9509, leave the test VSAN on the 9140, and then disconnect the two switches, creating two fabrics. Is there an easy way to do this? I've tried setting up a trunk between the switches but I think I need to create a common domain; as this is disruptive I want to avoid that if possible.