Using rsync / cwrsync for copying data locally

I am using rsync alot to sync data between remote and local folders. Under Windows 7 64bit I am using cwrsync. Occasionally, I need to sync large (updated) data files from my local computer to another local device (usually a usb drive). The option to use to avoid copying the whole file is --no-whole-file. So with my specific cwrsync installation this looks like this:

c:\cwRsync\rsync.exe -rtv --progress --no-whole-file src/ dest/

Plain and simple ... who could have thought?! I never tested this on a Linux machine but I assume it works the same way there.

cheers