Edit2: OK Per feedback I am going to have a dedicated external NAS and a separate homeserver. The NAS will probably run TrueNAS. The homeserver will use an immutable os like fedora silverblue. I am doing a dedicated NAS because it can be good at doing one thing - serving files and making backups. Then my homeserver can be good at doing whatever I want it to do without accidentally torching my data.
I haven’t found any good information on which distro to use for the NAS I am building. Sure, there are a few out there. But as far as I can tell, none are immutable and that seems to be the new thing for long term durability.
Edit: One requirement is it will run a media server with hardware transcoding. I’m not quite sure if I can containerize jellyfin and still easily hardware transcode without a more expensive processor that supports hyper-v.
Would Truenas fit as immutable? I guess it doesn’t stop you from changing things, but doing so might break the next update.
Configuration can be exported. Disaster resolution of fresh install and restore configuration has worked for me. No data loss and even the Virtual Machines started right back up.
One could argue that they do “try to stop you”… technically… by disabling the execute bit on software update tools (like apt & deb)… but I see that more as a gentle reminder and acknowledgement of your ownership of the machine, as they could have easy just not had those tools present at all.