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.

function get-snaps{
    $vms = get-vm | sort name
    $vmsnaps = @()
    foreach($vm in $vms){
    	$snap = Get-Snapshot $vm
    	if($snap){
		  $vmsnaps += $vm
		  write-host -fore green `n `t $vm
		  $snapshots = Get-Snapshot $vm
		  foreach ($snapshot in $snapshots){
			write-host "name: " $snapshot.name " size: " ($snapshot.sizemb/1024)
    		}
    	}
    }
}

get-snaps

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:  0.07853515625

         Server2
name:  Description    size:  3.79728515625

         Server3
name:  Consolidate Helper- 0  size:  1.6565625

         Server4
name:  Consolidate Helper- 0  size:  73.45369140625

         Server5
name:  Consolidate Helper- 0  size:  53.60998046875

         ARPDBW0025202
name:  Description    size:  0.01630859375