This unit performs flawlessly. I use it with two 8tb WD Red HDDs in RAID 1. it works amazingly with plex, I've had as many as 4 simultaneous streams with only about 60% CPU usage. As with (it seems) any plex install - stay away from h.265/HEVC encoding though. A single stream takes up about 70% in that case, but that's just a tough file type to transcode. No fault of the unit.