Is it possible to make TI operate in a RAID-like manner whereby my backup HDD can mirror precisely what is contained on my active drive? To backup my media files, in the past I would attach my backup hard drive to my PC via usb and manually copy over new files or any modifications I had made of files. For instance, if I had a folder of new photos on my HDD I would also copy them over to my external USB backup hard drive via "copy/paste". Previously these changes would occur weekly meaning backing up would be infrequent; nowadays I make so many changes to my media files that by the end of each day parts of my HDD can look very different than what they look like in the morning. The benefit of this process is that I can make each file and folder look on my backup hard drive look exactly like the one of my current active drive in my system. The problem of course is that not only is this a time-consuming process but also it is very hard to remember all the changes that I have made. For example, I may change the name of a folder (which has previously been backed up on my external USB drive) so if it is copied over to my backup HDD then I could end up having two folders with different names but with identical contents, assuming I did not know it had previously been backed up. This is where the joy of RAID comes in. If I delete a file on my system, RAID will automatically delete the same file on the usb backup; if I rename a folder to another name, RAID will auto rename the exact same folder instantly; if I move a folder to another part of the system drive then RAID does exactly the same on the backup. The problem with TI seems to be that (assuming I have already carried out a full-disk image and thus am doing incrementals) if I do any of the above procedures then TI will just create duplicates. For example, if I rename "familyevent.avi" (which is already backed up) to "familyday.avi" then TI will of course backup the "familyday.avi" video but it won't delete the previously backed up "familyeven.avi" which is no longer needed. While RAID would do the operation in real-time, most probably mere seconds; TI has to analyse the system drives and create another incremental image meaning the process takes much longer. I don't expect TI to operate in real-time but if there is a way to mirror my system drive when I hit "backup" that would be great. I think Apple's Time Machine operates in a similar way (but I don't have a MAC ). If I rename a file on my system and move a folder, I don't see it being that difficult to ask TI to do exactly the same thing on my usb drives. I'm hoping this can be done as I do like TI's intuitiveness.