Using the PowerGUI, you can list all snapshots, but unfortunately, it doesn’t list the parent VM.

I wrote a quick little function to search all VMs that have snapshots and list them.

Just save that into a .ps1 file and run it. Make sure you’re connected to a vCenter or it won’t work.

Expected output is like this:
Server1
name: Description size: 0.08

Server2
name: Description size: 3.79

Server3
name: Consolidate Helper- 0 size: 1.66

Server4
name: Consolidate Helper- 0 size: 73.45

Server5
name: Consolidate Helper- 0 size: 53.61

Server6
name: asdf size: 0.02