On 01/19/2013 11:31 AM, Nicolas Thierry-Mieg wrote: > agreed, except if both source and dest are local, eg back up to a USB > HD. If you test that you'll see the speedup is 1 (ie no speedup) That makes sense because it would take longer to locally checksum both files and then make a difference based copy than it would take to just do the copy without trying to be clever about it. -- Benjamin Franz