I have a 250GB macbook air. I do a lot of photography, so my SSD gets filled up with photos really quickly. I've been using a 2TB external hard drive to archive the older photos that I no longer need to store in my SSD, moving the folders with the photos manually to the external hard drive, and then deleting them in my SSD. I was wondering if there is a way to do this automatically? The process should backup all the sub-folders in my Pictures folder to the hard drive, but without deleting the sub-folders that I have already deleted in my SSD.


If you are not afraid of using Terminal, you can run

rsync -a --progress /PATH/TO/Pictures /Volumes/EXTERNAL/Pictures/

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