The TerraMaster F2-420 ($300, available on Amazon) is a basic RAID 1, 2-bay NAS designed for small office or personal use. The device ships with a 2GHz quad core Intel Celeron processor, 4GB of RAM (upgradable to 8GB), two gigabit LAN ports, and two USB 3.0 ports. You must provide your own hard drives.
After installing drives and connecting the F2-420 to your network and power, you use the TNAS application (available on the web at start.terra-master.com) to begin the process of setting up the F2-420. The TNAS desktop application, which is available for Mac or PC, is what you use to locate the TerraMaster NAS on your network and begin the initial setup process. The entire setup process, which includes initializing the hard drives, downloading firmware, creating an initial admin account, and setting up the RAID, takes about 20 minutes, depending on your network speed. An integrity check on the RAID took several hours longer, but the F2-420 was usable during that time.