NAS units are often small, do not use a lot of power, are highly configurable, offer redundancy as some models even can handle RAID internally. QNAP and their Network Attachable Units are among the most advanced available on the market today. Today we'll have a look at their the QNAP TS-439 Series Turbo NAS product.
A 4-bay NAS unit, pop in 4x 2TB drives .. and you just added 8 TB of data storage over a 1000 Gbit/s network connection. Downright handy, and very impressive.