I would get another 1TB hdd and make a second copy of the datas. I have a 3.5mm thing where it can insert two 2.5" harddrives. Once a while I insert a 2.5" back up and sync all the important datas with SyncToy, then eject the harddrive.The stupidest thing that can happen in this case would be to accidentally reverse backup process and tells SyncToy to overwrite the newer datas with old datas, also to delete all new datas not existing in the backup harddrive. If there is a project you are working on for thousand of hours and then completely lost it Yeah, I have been thinking about getting another 1tb external to make a back up of my original files on my main external. Does that make sense? lol