If you don't currently have a hard drive to back up your computer, I advise getting one immediately. The storage is constantly becoming cheaper, and you'll be thankful you have it when your computer crashes or loses memory. Today only on Amazon you can get this 4TB portable external hard drive by Seagate, a highly trusted brand in memory storage, for 46% off regular price with free shipping. This hard drive connects to your computer via USB 3.0 and runs off the power of the computer, so you can take it wherever you go. The same hard drive sells for $195.07 at Walmart.