Related:
(not tested on v7)
save and restore global variables on reboot
http://forum.mikrotik.com/t/persistent-environment-variables/145326/6
Save RouterBOARD full backup of everything [configuration, certificates, host key, router users (no passwords), user-manager, dude, other files]
http://forum.mikrotik.com/t/router-crashes-are-wiping-the-config/149189/7
eidt:added note not tested on v7