With a 12TB internal hard drive (HDD), you can store many large files. That's one of the reasons to use it in a workstation for video editing, for example. You can also easily connect a 12TB drive to your NAS. With a 12TB hard drive, you'll have enough room for at least 250 4K movies of 2 hours each, 1300 music albums, or 1.2 million photos. Thanks to this, you'll be covered for a while after installing the internal hard drive.