Copying large files to network drive.


macrumors newbie
Original poster
Nov 22, 2009
I've recently purchased a NAS drive and would now like to copy about 500 GB of files onto it.

Obviously this is a slow process!

Is there a way I can set up the copy so that if it gets interrupted I can resume the transfer?

At the moment the I just know X of 100 GB has been transferred. On the destination drive you can't see any of the files being transferred across until the entire operation is complete (on a pc you can normally see the files that have been transferred immediately) ...

I'm a bit worried that if I turn my laptop off or I have any network issues the transfer will fail..

I'm running Snow Leopard.


macrumors 68040
Apr 8, 2004
Use rsync to copy. This will transfer only files that are different.

Typing this in Terminal will work:
rsync -axS <your source> /Volumes/<network drive>/<destination>

rsync will do an initial check to see what files are different between <source> and <destination> and copy over those files.

If you're not comfortable with Terminal, I think you can do the same with the likes of CarbonCopyCloner or SuperDuper.
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