I have about 600GB of data to copy from one server to another. Normally, I'd use ROBOCOPY for this so I can skip copying files which are identical between both systems. In this case, however, I need ...

I'm trying to figure out how to speed up my Robocopy file copies. My network is two Windows 10 PCs with Gigabit network cards, connected via a Gigabit switch. I've run the tests (A., B., C.) below.