A portable hard drive seems pointless to some, but incredibly important to others. If you have all of your files backed up on a portable hard drive, you have a safety net, since your important files are kept safe in the event of a computer crash. If you are someone who wants extra storage capacity for your video files, a portable hard drive is a great solution allowing for your computer to expand its storage capability to virtually whatever size you want. By having a portable drive, you can also transport your files safely and easily to whatever location you are traveling to.