As a part of business continuity plan we are going to have all our servers
replicated in a different place to which a fiber connection is available.
(Currently its running at 100Mb) Servers are running mostly RH Linux 7.2 to
8.x and couple of Win 2000 servers too.
rsync is your best option on linux
On windows? Well, install cygwin (or at least a barebones version of
cygwin) and see http://www.gaztronics.net/rsync.php