Review on 📦 Asustor Lockerstor 2 AS6602T NAS with 2.0GHz Quad-Core, Dual 2.5GbE Ports, Dual M.2 Slots for NVMe SSD Cache, Three 3.2USB Ports, 4GB DDR4 RAM, HDMI2.0a Output (2-Bay Diskless) by Robert Ryokan

I fully equipped my unit with four 10TB Seagate Exos drives, two 512GB SSDs (cache only) and 16GB RAM (that's more than the processor manufacturer and Asustor has stated a maximum of 8GB, but when it recognizes 16GB I haven't had any problems yet). The hardware is top notch and comes from the folks at Asus. The only limitation I have is that I come from a Synology machine that is 4 years old and the software is definitely more user friendly than Asustor. If you like working more with software and are up to the task then by all means buy Asustor, but if user-friendly software is your top priority you might be better off with Synology as their system DSM is a bit more user-friendly. You really can't go wrong with any system, but I find the hardware performance of the AS6604 better than the similarly equipped Synology 1520.