Thanks for your response. One issue is that on the destination storage I didn't have 1.6TB available, so I had to resize the volume. Though for a 100MB system volume it copied at block level, that finished in 8 seconds according to the Converter log. For future reference though, how would I transfer resize the disk from OS in a way that it would it also decrease the size of the thick provisioned VMDK?
Also, my understanding is that when changing the size of a volume, the Converter will have to do a file-level copy. Please do correct me if I am wrong. I am really interested in seeing if there a way to speed this up.
Thanks!