If the city's power supply fails, the data center automatically switches to power supply with the help of diesel generator sets (DGU). NORD-4 has 16 FG Wilson DGUs. DGU are reserved under the scheme N+1. DGU engine is maintained in a warm condition, so that DGU come out on an operating mode and are synchronized for 30 seconds.
NORD-4 occupies a dedicated area. The data center has its own 24-hour security service. The entrances to the territory and premises of the data center are equipped with an access control system (ACS), which protects against unauthorized intrusion. The data center is also equipped with an alarm system by the Secretary of State for the Home Department (the "alarm button").