To get even more speed, you might want to checkout running rsync in parallel, for instance with <a href="http://moo.nac.uci.edu/~hjm/parsync/" rel="nofollow">http://moo.nac.uci.edu/~hjm/parsync/</a> . I found this to work best to exploit fast uplinks (such as 10GB/sec) and also exploits hardware parallelism if the sender and or reciever has uses distributed file system.