Hi All I am new to mac and have a 2011 iMac. I also have an old 500gb time capsule. I have had it set up to run time machine but being a windows user I could not get my head around why the files on the time capsule weren't a carbon copy. It's off putting to see weird file formats that you cannot open and view. I had presumed Time machine acted almost like a raid system and would just copy my HD to it at regular intervals. Anyhow, I stopped using it and started storing movies on my TC instead. I've had a little rethink about backup and a little worry and I need to give Time machine another try so.. Say I buy an external HD and store all my movies and TV shows on that (I am not concerned about backing these up) If I then run Time machine to store everything on the TC (both iMac and TC storage are 500gb) in the event of a crash of either disk will I still have all my data (primarily photos and home movies of the kids) safe? I guess I haven't been able to trust Time Machine because I didn't understand it before but are people generally supportive and confident in using it in this way without making manual carbon copies of everything? Cheers for now!