Bought this to upgrade from my DS415play which I had for 6 years for home use. The upgrade process was very simple just by moving the physical disks over and confirming when prompted at bootup. A massive improvement in response times with the DS920+ even without additional RAM or SSD cache. Makes it much more usable when streaming video or browsing images. If necessary in future I can still expand the RAM, SSD and use the second network port, but I think CPU was the main bottleneck on the DS415play.