I bought transcend hard disk for 3500 about 2 years ago and its been working amazingly so far. Guys its storage is 1 tb n that is sufficient for storing lots and lots of data. I have approx 300 plus movies and app in my hard disk and still there is enough space to store more. And lets talk about the apperal of this hard disk guys just have a look at the pic I have uploded. it has amazing feature such as shock proff, one touch backup, file encryption and comes with a three year warranty. good luck for buying. Guys one more thing it has a button on the top of the hard disk that is for backup.