IHAC has several Edge-T running at branch offices and snapmirroring to central FAS storage in HQ, now they plant o upgrade the HQ FAS storage from 7-mode to cDOT, they are checking the official procedure to do Edge cDOT transition.
Procedurally it's the same. 7MTT, etc to move the data from the 7mode controller to the cluster mode controller.
The pain point is the license. Unlike physical controllers which can be switched between modes, the VSA mode is model dependent so it requires a different platform key. They'll need to buy new licenses and build up new edge controllers, then execute a 7toC migration.