FreeNAS vs. FreeBSD?

[C. P. Ghost]

Hello,

up until now, I'm used to run FreeBSD on SuperMicro servers
with ZFS-over-GELI. Works like a charm, and I'm comfortable
with it w.r.t. administration and so on.

Now I'm wondering what's the difference to FreeNAS.

Does FreeBSD endorse FreeNAS (there's no port to FreeNAS
in the ports tree, that's why I ask), or is it a completely
different and independent project of unknown quality
and reputation? Would you advise to keep using FreeBSD
or should I give FreeNAS a try?

I know this belongs more to a FreeNAS mailing list, but I'd
like to know what FreeBSD users think and recommend.

TIA,
cpghost.

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