Windows has the robocopy command. It is something like rsync, and it's faster than a normal copy. You have to enable multithreading with the /MT:n parameter.
https://en.wikipedia.org/wiki/Rsync#Algorithm:
“The rsync utility uses an algorithm invented by Australian computer programmer Andrew Tridgell for efficiently transmitting a structure (such as a file) across a communications link when the receiving computer already has a similar, but not identical, version of the same structure.”