Thanks for the link to that other thread in post #2, I will read and digest..
I've come back here after a long interval, and I'm following-up on this thread, as this is my precise concern also. I'm a retired network/IT guy with diverse experience. I'd not used FreeNAS until around a year and half ago when I setup my first system to serve as a datastore for my home business. That went fine, but I never really finished the job off, in terms of monitoring and alerting, data protection, and DR/contingency procedures.
I've come back to sort that out, and frankly I am apalled by the lack of decent documentation available for FreeNAS. All I can find is the very scanty 'User Guide' which are really only a overview of the GUI controls. They completely fail to go into adequate detail in many key areas such as config management, backup/recovery and DR procedures. To me it seems that FreeNAS serves as more of a hindrance than a help at the moment, and feel its really quite risky for me to continue using it.
I am seriously considering abandoning FreeNAS as a consequence of this and replicating the services I need (which are quite limited) on the native OS. i have some experience with FreeBSD so that would be my first choice.