Geeze, what an obvious sales pitch.

Try The Secret of Money Island instead, it’s much better than Loom. 😉

Unraid 6.12 and higher has full support for ZFS pools. You can even use ZFS in the Unraid Array itself - allowing you to use many, but not all, of ZFS extended features. Self healing isn’t one of those features, though, it would be incompatible with Unraid’s parity approach to data integrity.

I just changed my cache pool from BTRFS to ZFS with Raid 1 and encryption, it was a breeze.

I generally recommend TrueNAS for projects where speed and security are more important than anything else and Unraid where (hard- and software-)flexibility, power efficiency, ease of use and a very extensive and healthy ecosystem are more pressing concerns.

Unraid is also awesome for places with high energy cost: Unlike with your typical RAID / standard NAS, it allows you to spin down all drives that aren’t in active use at a relatively minor write speed performance penalty.

That’s pretty ideal for your typical Plex-server where most data is static.

I built a 10HDD + 2SSD Unraid Server that idles at well below 30W and I could have even lowered that further had I been more selective about certain hardware. In a medium to high energy cost country, Unraid’s license cost is compensated by energy savings within a year or two.

Mixing & matching older drives means even more savings.

Simple array extension, single or dual parity, powerful cache pool tools and easily the best plugin and docker app store make it just such a cool tool.

Plex supports native auto deletion, just like you are asking for. For Jellyfin there’s a plug-in: https://github.com/terrelsa13/MUMC

Plus for some odd reason the layout on my shieldTV is an absolute disaster for some reason

That’s because Jellyfin’s clients are still mostly terrible. Jellyfin is the more flexible media server, Plex has the far, far better clients.

My Brother laser printer has told me that my toner is empty three times now for the same cartridge. It eventually refuses to print, but that can be overridden with some undocumented trickery. I have manually overridden it each time, told it that I installed a brand new XL cartridge and it just keeps printing. It just told me, again, that the toner is low - I don’t believe it, I’ll override it again. It would have forced me to throw out at least 66% of the remaining toner if it didn’t have the override.