Building your NAS (Network Attached Storage) box isn't as difficult as you might thing. It's basically like building a regular PC -- see our How-To guide from a few years back -- but if you're still weary, there are a number of pre-built NAS boxes in the wild. Whether your build or buy pre-built, what you stuff your NAS box with is up to you. One options that's definitely worth consideration is today's top deal, a Western Digital Red 4TB Internal NAS Hard Drive for $180 with free shipping (normally $220; use coupon code: [EMCWVWX49]). This drive spins at 7200 RPM, has 64MB of cache, special firmware designed for NAS applicatoins, and other NAS friendly features, including a longer warranty period (3 years).