WD Red 4TB Hard Drive Review
If you can afford an SSD large enough to house all of your important applications and data, a low-power hard drives (or two) is the best option for secondary storage. Low-power drives are also preferred for NAS devices, which seem to be more popular than homebrew file servers these days. NAS devices are limited by the bandwidth of their network connections, so speed isn’t the primary concern.
Which brings us to the WD Red 4TB… at TechReport