What's a NAS? Network-attached storage allows you to share files from one, always-on device throughout your house. With a NAS on your network, you can use it to store your movies and play them from multiple Kodi boxes, store backups on it from your PC, or use it as a BitTorrent box that seeds your files 24/7. Sure, you could do all this with your main PC, but a NAS is lower-power, and it is designed to be run day and night, even if your desktop is out of commission. Once you start using one, it's hard to go back. There are plenty of ready-built NAS devices out there, from companies such as Synology, QNAP, and Asustor. Just buy one, pop in a hard drive, and you're off to the races. But they can get expensive quickly, and if you aren't sure whether a NAS is for you, it's hard to justify the investment—especially if you want something that can grow with your storage needs. The Raspberry Pi, on the other hand, is such a versatile little board that it can act as a cheap