Sort of a continuation of the last post. This still uses FreeBSD,
pfSense, Juniper SRX but it could fairly
easily be adapted to OpnSense (fork/clone of
pfSense), and other network vendor appliances.
This is a really terrible way of cloning one box to another.
There are plenty of articles that discuss how to handle FreeNAS to FreeNAS
replication, its even covered in the FreeNAS documentation
(thank you iX Systems for both automatic and manual setups.