Originally Posted by Moriendor How's your German, JemyM? There is a really neat tool called DirSync that I'm using myself to keep the backup folder of my secondary HDD and that of my external HDD, well, … in sync. No English version unfortunately but you should be able to figure it out even with rudimentary German skills. It's very easy to use. You create a sync job and just pick a source and a target and set some parameters and that's it. If that doesn't work out for you then google for "rsync" and/or check out a program called DeltaCopy. Good luck!