Here's what I need to accomplish. In order to run a procedure on one of our HP MSA's I need to copy all the VHD's that are stored on this about 1.1 to 1.5 TB worth of data. Unfortuantely we're not currently backing them up using anything. I have a 3.0 TB USB 3.0 USB drive that I can connect to my laptop and plug the laptop directly into the switchport near where the Hyper V servers are located. Since i'll need to shutdown all guests on the hosts to copy the VHD's to the USB drive I need to schedule downtime for this location. How much time do you think it will take to copy all this data to the connected USB drive on the laptop.