Backing up My Passport for Mac

I use My Passport for Mac as my iphoto library. In addition to Time Machine, what is the best way to create another back-up of My Passport?  


Not sure if you will be able to do that properly since Apple Time Machine will backup the data to a encrypted folder and a different backup software might not be able to see the files.

Hi.  I use ChronoSync ( for backing up my photos to my passport.  I use the weekly scheduling feature in the app and it takes care of any photos that I may add that week.