Admins best friend is now included with Microsoft Windows Server 2008, 2008 R2, 7 , Vista.
That is great news, however, it’s about 50 times slower than it was used to in the Windows 2003 Resource Kit Tools Version.
Googling this, you might come across many different solutions, such as TCP Offloading etc.
However, the only thing that really seems to do the trick is using the old version of robocopy.
Here’s a downloadable copy, in case you lost it:
Robocopy.zip (32.3 KiB, 1,500 hits)