class servers {
    $servers_array = {
                server1 => {
                        ip => "0.0.0.1",
                        safe => 0,
            check_all_disks => "!20%!10%",
                },
                server2 => {
                        ip => "0.0.0.2",
                        safe => 1,
            check_all_disks => "!20%!10%",
                },
    }
}

class firewall inherits servers {
}

class icinga inherits servers {
}