Mirror configuration over to another pfSense box?

[consolibyte]

We have an off-site client who would like a half-baked failover solution in case their pfSense hardware blows up.

They don't want to pay for another WAN, they just want to have a second pfSense box on hand, so that if a hardware failure occurs, they can unplug the failed pfSense box from their 3 networks, and plug in the standby pfSense box.

Is there an easy way to mirror the pfSense configuration from one box to another?

Is it as easy as just copying config.xml from one box to another every night?

[Metu69salemi]

Try to look carp