On a DS920+ users will run various containers, Plex/Jellyfin, PiHole, etc. The Celeron J4125 CPU (still used in 2025 on the 2 bay DS225+) is slow when used with the stuff most users would like to use on a NAS today, and the software runs from the HDDs only. Every other equivalent modern NAS is on N100 and can use the M.2 drives for storage just like the HDDs, which makes them significantly more capable.