To run Ensim through maintenance, follow the steps.

# /usr/local/sbin/set_maintenance
# /usr/local/sbin/set_pre_maintenance
# /usr/local/sbin/set_post_maintenance
# /etc/init.d/webppliance restart OR /etc/init.d/epld restart (for EnsimPro)

Please note, during the maintenance mode, the sites hosted on the server are inaccessible.