I have questions about this. I'm thinking of building my own NAS server, and I don't know which OS to use. On the one hand it looks like people recommend TrueNAS a lot, which is nice now that they have a Linux version, but I'm not really sure what does it offer over a raw Debian apart from web/configuration and some extra tools? I have quite some experience in running Debian systems and managing RAIDs (not with ZFS but doesn't seem too much of a jump) and I worry that TrueNAS, while nice at the beginning, might end up being limiting if I start to tweak too much (I plan on using that NAS for more things than just storage).