That said, I’ll probably try out the UniFi NAS offerings in the near future. I believe Synology has semi-walked-back its draconian hard drive policy but I don’t trust them to not try that again later. And because I only use my Synology as a NAS I can switch to something else relatively easily, as long as I can mount it on my app server, I’m golden.
There are guides on how to mainline Synology NAS's to run up-to-date debian on them: https://forum.doozan.com/list.php
leave it to serve files and iscsi. it's very good at it
if you leave it alone, no extra software, it will basically be completely stable. it's really impressive
If you have OPNSense, it has an ACME plugin with Synology action. I use that to automatically renew and push a cert to the NAS.
That said, since I like to tinker, Synology feels a bit restricted, indeed. Although there is some value in a stable core system (like these immutable distros from Fedora Atomic).
Edit: I just checked Grafana and cadvisor reports 23 containers.
Edit2: 4.4.302+ (2022) is my kernel version, there might be specific tools that require more recent kernels, of course, but I was so far lucky enough to not run into those.
https://github.com/JessThrysoee/synology-letsencrypt
> there is very little one can do with this thing.
It has a VMM and Docker. Entware / opkg exist for it. There's very little that can't be done, but expecting to use an appliance that happens to be Linux-based as a generic Linux server is going to lead to challenges. Be it Synology, TrueNAS, or anything else.