Best way to use rsync to backup to EON from Windows system

I have my EON working now and am trying to figure out the bast way to use rsync to backup some directories from the laptop to the EON.

Currently this works but it seems to always copy every file in the SRC directory to the DEST:

rsync -rv SRC/ DEST

Any ideas?

I don’t know how rsync works on windows, but there should be an

-u (--update)

parameter which copies only newer files.