How many full movies would a 1TB storage hold?

In 1TB you can hold.

DivX (cca 700MB) about 1400

DVD (cca 4.3GB) about 230

BluRay (25 or 50GB (dl) about 40 or 20...

It's for 1TB, but you should note that 1TB hard disk drive is 1000000000000 bytes, but one kB is 1024, one MB is 1024kB, one GB is 1024 MB, and finally one TB is 1024GB...so, when you see the Properties of the hard drive you always see that the capacity is smaller than it's written on the hard drive's box... That's the reason... If you buy 1TB, You'll actually get

1000000000000 / 1024 / 1024 / 1024 / 1024 = 0.909 TB