I was delayed for a bit, but I'm having success now that I'm working on it.
It took me about a week to get things working with UnRaid. Just the normal... learning the software issues. I have an array set up with two parity drives. I have a cache pool of two SSD's that are mirrored.
I have one issue with the QNAP TL-D800S. When I do a startup, some of the drives in the array don't get recognized. So, I have to removed the unrecognized drives and reinsert them. With the QNAP JBOD this is a less than 60 second job. Then I log in to the web interface and start the array. As this thing will live in my networking closet on a UPS, powered up 24/7, I don't foresee this as a big issue. I will likely post on the forum, see if someone else has figured out the issue.
I've also been able to get a Docker instance of Plex running, my movies, music, tv shows, all on the array, serving to Roku's running the Plex app, as well as our phones, tablets and computers.
SpaceInvaderOne's YouTube videos are an invaluable resource. He does a great job. I usually have him open in a browser window on one side of my ultrawide monitor, and unraid open in the other side, following his instructions... with me pausing lots!
I'm happy with UnRaid, looking forward to doing much more!