I believe the author&#x27;s current setup is running ZFS on Illumos (specifically OmniOS), with volumes exported over NFSv3 and Samba. It&#x27;s not mentioned in this post, but some of the older ones talk about it [1]. The comment about FreeBSD was worrying that if they started relying on ACLs now, and later switched their fileservers to NFS-on-ZFS-on-FreeBSD instead, they might end up with incompatibilities in the ACL models.<p>[1] Here&#x27;s one on the network filesystem setup: <a href="https:&#x2F;&#x2F;utcc.utoronto.ca&#x2F;~cks&#x2F;space&#x2F;blog&#x2F;unix&#x2F;NFSFutureDesire" rel="nofollow">https:&#x2F;&#x2F;utcc.utoronto.ca&#x2F;~cks&#x2F;space&#x2F;blog&#x2F;unix&#x2F;NFSFutureDesir...</a>