An economical DIY NAS featuring FreeNAS, an ASUS B150M-K D3 motherboard, Intel Celeron G3920 GPU, 16GB DDR3 RAM, and 12TB of storage (6 x 2TB) for just under $700.
Inexpensive Xeon CPUs on eBay compelled me to build a homelab machine for hosting virtual machines.
I spent $120 on eBay to build a point-to-point 10GbE network between my PC, DIY NAS, and homelab machines.
I got a little bit jealous building the DIY NAS: 2016 Edition, so I used it as inspiration to upgrade my own DIY NAS.