With an internal hard drive (HDD) of 1TB, you can expand the internal storage of your computer. For example, use a 1TB HDD to store 25 4K movies of 2 hours, 110 music albums, or 100,000 photos. If you store a lot of data, an internal hard drive of 1TB or more is always handy to have. Once it's built in, you can start saving files on your computer.