A small form-factor DIY NAS featuring FreeNAS, a Supermicro X10SDV-TLN4F-O motherboard, Intel Xeon D-1541 CPU, 64GB DDR4 ECC RAM, 2x 10GbE, SilverStone DS380B case, and 40TB of total storage.
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.