How to configure freeipa hidden replica

[Monkey Bizness]

Hi,

I'll add a hidden replica to do all the management stuff.
Notably I would like to backup all configuration (dns, ca, users,
groups, hosts, ad trust etc...).

1st question : Is it possible?
2nd question : Is it a good idea?
3rd question : does that replica need to have all the features from the
other replicas enabled?
For instance, to backup dns config but not serving as a dns server,
should the dns feature still be enabled?

Thanks you
Monkey