You could use something like Robocopy to copy the data to a network share on the server. You could use xcopy as well but Robocopy is a more robust copy.
Depending on your situation you could have them save data to a network share on the server as well.
On the client side, write a batch file using Robocopy which comes with your Windows server. Use a Scheduled Task to run it periodically to push the data to the network share.