Engineering infrastructure of The Data Processing Center 

Engineering design, constructing and service maintenance of infrastructure of data processing centers (DPC) belongs to the number of the main activities of LLC “NAG”.

Data center engineering systems

Constructing of infrastructure of data processing centers (DPC) is one of the main activities of LLC “NAG”. The company not only uses its own products and developments in the field of engineering systems, but also works closely with leading equipment manufacturers.

All engineering solutions offered by the company “NAG” correspond to the international requirements. Such unique solutions are standardized both, as separate technological adjunct systems and as complex solutions in the aggregate. The company adheres to the norms of the American standard TIA-942 and its European analogy EIA-942 “Telecommunications infrastructure for data processing centers”, which contributes to keeping up excellent equipment quality level and high level of operating availability, interoperability, reliability and security.

The company “NAG” develops a complete set of design and operational documentation, as well as assists in training the client’s personnel to maintain the built data processing center.

It is possible to construct a data processing center in container and modular design. The configuration and design is to be chosen depending on the individual preferences of the customer.


The ready-made structural system is built on the basis of a thermally insulated modular block made of metal profiles, sheet metal and noninflammable thermal insulation material, allowing to obtain clean...

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Modular block type ready-made structural system

The ready-made structural system is built on the basis of a thermally insulated modular block made of metal profiles, sheet metal and noninflammable thermal insulation material, allowing to obtain a clean and retentive room. Modular Block of the Data Protection Center (MBDPC) has a division into functional zones, as well as a physical division inside, into a turbine building and an anteroom/technological room. The assembled block has the necessary full strength that allows to place the equipment inside, has the necessary number of embedded details in the walls and in the ceiling, allowing to hang and fix the elements of engineering infrastructure. The outer skin is made of steel sheets with a thickness of at least 2 mm and is painted with a special paint with a general degree of incombustibility of the walls EI 60. In addition to protective functions, the modular blocks perform the functions of a stress-bearing structural member. The design of the MBDPC provides full protection against dust and partial protection against water jets falling at any angle, which corresponds to the seal rating IP65 according to GOST (All-Union State Standard) 14254-96. The floor is covered with homogeneous antistatic gray floor cloth.

Please be aware that there is the possibility awarded to apply the color and shade of paint on the RAL modular block at the request of the customer, as well as to place the logo of the customer on the modular block. There are single-leaf doors, door lock arrangement is equipped with ordering anti-lock brake which in its turn is furnished with a mechanism “Antipanika” (antipanic).

Container type ready-made structural system

The ready-made structural system is all-welded, made of metal profiles, outer sheet profiled metal with a thickness of not less than 2 mm, noninflammable thermal insulation material, interior furnishing with zinc-coated profiled sheet, allowing obtaining two clean and retentive rooms. The modular block for placement of engineering infrastructure is a ready-to-install equipment construct. Its full strength allows to place the equipment inside, it has the necessary number of embedded elements in the walls and ceiling, allowing to hang and fix the elements of engineering infrastructure. As part of the design of the container block (CB) there are elements provided to ensure the possibility of its reusable loading and unloading on transport by cranage crampon. A container block has a division into functional zones, as well as physical division inside the data processing center, into a hot aisle, a cold aisle and a technical room. The technical room has a partition with a hot and cold aisles which allows to provide temperature and humidity conditions in the closets with IT-equipment and to delimit access. Insulation is noninflammable mineral cotton on a basalt basis. Fire resistance rating of walls, floor and ceiling is not less than EI 60. The design of the entire complex allows ready for use transportation without the need for on-site construction and installation works. There are the single-leaf doors, door lock arrangement is equipped with ordering anti-lock brake which in its turn is furnished with a mechanism “Antipanika” (antipanic).

Adjunct system of hermetic input wires for communications

For cabling, wiring and other communications through the walls of the protective hermetic structure cable hermetic inputs manufactured by Roxtec with “multidiameter” technology are provided, which are used to organize cables and pipes passing through the walls of the modular block (container). These inputs perform functions of fire protection of cables and have all the necessary certificates.

Wiring structures adjunct system

Metal wire trays DKC “F5 Combitech” and mini ducts “Legrand” are used for the organization of cable infrastructure inside the container-type (structural systems) data processing centers.

Various cable support trays spaced apart are provided for the laying of power supply (U > 60 V) cables and the laying of low-current alert cables.

Wiring closets and gadgets adjunct system

To accommodate IT-equipment, this engineering solution provides for the use of 10 MetalBox wiring closets manufactured by the company “NAG”. All offered wiring closets 19” have a depth of 1200 mm, a height of 42 U and a wiring depth of 850 mm. The wiring closets are fixed to the floor of the container permanently, thus within the process of work they do not require movement, the front and rear aisles of sufficient width are provided for access to the wiring closets. Each wiring closet is equipped with two vertical cable organizers that do not occupy a useful U-space in the closet.


Power supply of power electrical equipment and electric lighting of MBDPC premises is performed in accordance with the requirements of Operational code of electrical installations, SP-110-2003, as well as taking into account GOST (All-Union Sate Standard) 13109-97, GOST R 51318.24-99, GOST R 50839, GOST R 51321 and other regulatory documents.

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Wiring closets are to be assembled in accordance with the working documentation. For power supply of consumers of the I-st and the I-st special category of power supply there is a DD (distributed device) placed in the DPC for 2, 3 or 4 (depending on capacity of all installation) dual inputs, including, if necessary a generator compartment input. Within the process of assembly switching equipment manufactured by ABB and SchneiderElectric is used. A full range of measurements and inspections of LVDS (low-voltage distribution switchboard) is performed, followed by the issuance of appropriate test reports complete with the service list. The certified cables and wires selected in accordance with the specified parameters, power and regulatory documents are used in the power supply system. All cable lines are labeled, the in-plant system of electrical earthing and Bonding Network is implemented. Together with the data processing center at the request of the customer there can be designed and supplied outer earthing ring and Bonding Network as well as uninterrupted power supply (UPS) adjunct system.

To ensure the IT-equipment with high-quality and uninterrupted power supply, and to maintain the temperature conditions inside the server room for the period of the absence of power supply to the main inputs, the technical specialists of the company LLC “NAG” are to perform the selection of the uninterruptible power supply system(s) manufactured by “SNR”, or by own production with the necessary battery cabinet to ensure the required operation time of the UPS in the autonomy mode. Modular uninterruptible power supplies are used in the data processing centers, produced by LLC “NAG”. This is due to the fact that such assembly versions are more reliable, more productive and make it easier to operate uninterruptible power supply systems.

The advantages of modular assembly:

  • scalability;

  • versatility of component objects;


Characteristic properties:

  • three-phase input and three-phase output port. Uniform equalization of output current and voltage between current phases;

  • The UPS is built due to the on-line dual voltage conversion circuit design;

  • zero transfer time to emergency state without transient phenomena at the output;

  • voltage surge, absence of voltage, short-circuit and congestion protection;

  • The UPS uses digital signal processing (DSP) technology to provide the highest reliability and field-performance data;

  • an input power factor close to one eliminates the negative impact of the UPS on the input power supply network;

  • work in high range of input voltage and input frequency;

  • self-diagnosis when the UPS is turned on;

  • congestion protection;

  • automatic bypass;

  • HotSync technology for power redundancy and power increase up to 3 + 1 voltage control circuit, providing parallel operation of 2, 3 or 4 UPS modules;

  • The number of electric power batteries connected to the UPS can vary from 32 up to 40 pieces;

  • adjustable charging current. The ability to adjust the maximum charging current depending on the capacity of the connected electric power batteries;

  • 3-step electric power battery charging greatly increases battery life span and optimizes charging time;

  • Urgent Blackout activity provides quick shutdown of UPS under emergency conditions, Urgent Blackout button of UPS module is protected by transparent cover to avoid misuse; there is also convenient device control:

  • LCD screen with control board;

  • communication port: RS232;

Modular-type UPS are placed in MetalBox wiring closets or autonomously.


IT-users' power distribution adjunct system

LLC “NAG” uses blocks of socket connectors “TeslaPower” for vertical installation. It is an advanced engineering solution for power distribution in telecommunication racks, server rooms and data processing centers (DPCs).

With remote network access and bused interface support, TeslaPower system is able to control equipment at the multicomponent network level remotely, providing reliable power supply and power management.

Main and emergency lighting adjunct system

Electric lighting for (Modular) Data Processing Center is made according to the requirements of Operational code for electrical installations-2000, SP 31-110-2003, as well as taking into account GOST (All-Union State Standard) R 51318.24-99, GOST R 50839 and other regulatory documents. Manufactured electric lighting is used as work light, which is performed by means of led lamps. Work light provides the necessary lighting conditions, the number of lamps is selected by the method of utilization factor depending on the size of the illuminated room as well as on the required illumination level. Emergency lighting provides the minimum necessary lighting conditions to continue operation in the event of a temporary failure of the work light. Lamps with built-in rechargeable batteries are used as emergency evacuation lighting fixtures. Battery life is at least 1 hour.

Heating adjunct system of Container Block

The container is heated by wall-mounted convectors with a capacity of 1.0 kW. each.

Heating devices are provided for the following:

  • preheating of premises at start-up of operation of the container block in a cold season;

  • constant heating of the main room in the cold season with insufficient heat inleak from IT-equipment;

  • ensuring air temperature not less than +15 centigrade degree in the technical room all year-round.


Air conditioning system is one of the main systems providing the normal functioning of IT-equipment. The required temperature conditions must be maintained continuously. In order to avoid the failure of the air conditioning system, its construction is to be carried out on the redundancy principle. Thus, in case of failure of any production unit the temperature conditions in the data processing center will remain unchanged.

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The installation of high-performance air conditioners is provided to utilize the heat generated during the operation of active IT-equipment, as well as to compensate for external heat inleaks. The air conditioning system maintains the temperature of the air at the entrance to the racks in the range suggested by the technical specification or within the limits recommended by the standards for the data processing center.

Types of air conditioners used in the Data Processing Centers manufactured by LLC NAG

  • Ceiling embedded- and duct-type air conditioners;

  • Precision air conditioners.


Ventilation aeration and free cooling adjunct system

DPC is equipped with a system of periodic general ventilation by dilution, which is also used to remove smoke, products of combustion and the gas mixture formed during the inflammation and subsequent fire extinguishing.

The proposed air conditioning system has following three modes of operation:

  •  The first modewhen there are people in the premises of the MDPC, ventilation aeration is switched on to supply fresh air, as well as to create excess pressure inside the room. In the cold period of the year the supplied air is heated by an electric heater to the temperature of 15°C;

  • The second mode comprises airing which occurs as automatic operation.

  • The third mode: after a fire, the general ventilation by dilution system is switched on to remove the fire extinguishing agent and combustion products to the full possible capacity of the airing plant. The system is to be switched on manually 30 minutes after the release of the fire extinguishing agent and elimination of the inflammation source.

The free-cooling system can be of the following types:

  •  System of direct free cooling

System constituents are as follows: air mixing chamber, hot air mixing ventilating fan, outdoor air mixing ventilating fan, outdoor air filter, cooling air circulation ventilating fan, set of chokes and valves, set of automation and temperature detectors.

  •  The system of indirect free cooling

System constituents are as follows: dry cooling tower, room terminals-and-heat exchangers, recycling pump, control system and detectors.

The algorithm, sequence and duration of operation of the ventilation aeration system can be set by the customer's specialists due to different modes.


The safety system consists of the following adjunct systems:

  • Closed circuit television system (CCTV);

  • Access control system (ACS).


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CCTV is implemented on the basis of IP-video cameras and a rack-mount video server. Video cameras are powered by PoweroverEthernet (PoE) technology via a single cable that transmits a video signal. The connection is made through a chosen PoE switch. The video server is of a rack-mount type which is operated by means of the necessary set of Software installed. The closed circuit television system (CCTV) has the possibility of configurable modes of video archiving that is continuous recording, schedule recording, recording due to the motion detector with a configurable tempo.

ACS is used to solve the following problems:

  • providing access control to the premises of the container block (CB);

  • ensuring the safety of material assets;

  • level differentiation of personnel access.

The model of the ACS is characterized by the type of the reader specified during the accommodating of the Technical Requirements.


It is allowed to use in the data processing center only automatic gas fire-extinguishing installations (AGFEI) which do not cause damage to the protected equipment (unlike systems of dry chemical fire fighting and water fire extinguishing systems). Only Freon 125 can be used as a gas extinguishing agent (GEA) included in AGFEI of DPC.

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Placement of modular installation of gas fire-extinguishing is provided in the server room. This means that the gas fire-extinguishing module will be stored directly in the protected room. When the system is activated, fire extinguishing will occur throughout the whole room.

AGFEI controls and handles over of all installation parameters. The activation of the fire extinguishing installations is carried out through the following modes:

  • automatically (the main mode) , i.e. by fire-alarm system;

  • manually (locally), i.e. using the manual activate key;

  • remotely (from the guard post), i.e. using the display unit of the fire extinguishing system S2000-PT.

Automatic fire and security alarm system is designed for fire detection in accordance with SP 5.13130.2009 requirements. The fire and security alarm system is part of the automatic fire extinguishing system and is the impelling system for activation the Automatic Fire-Extinguishing System (AFES).

The installation of security magnetic contact sending boxes is provided to monitor the condition of the doors.


AMCS of the DPC is designed to monitor, control and handle over the safety and life support systems of the modular data processing center (MDPC) in order to ensure normal conditions of its operation and to prevent accidents.

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ASMU is a hardware-software complex that collects, stores, processes, transmits and presents information. The system allows the dispatcher to provide full control over the processes of the data center equipment and to carry out operational management.

AMCS is a software and hardware complex that collects, stores, processes, transmits and presents information. The system allows the dispatcher to provide full control over the data processing center equipment and to carry out operating control.

AMCS of DPC depending on the requirements of the customer can perform the following functions:

  • temperature test and moisture control on the premises of MDPC;

  • temperature test at the input into each wiring closet of MDPC;

  • leakage control on the premises of MDPC;

  • Automatic gas fire-extinguishing system (AGFES) condition control and handling over the fire-retarding valve elements;

  • electrical network parameters control (Automatic throw-over circuit breaker, technical record-keeping of electric power used) and the status of automatic resetting circuit breakers on the power supply input system of MDPC;

  • status control of the uninterruptable power supply (demand, duty type, remaining residue of the battery life span, etc.);

  • status control of the diesel driven generator (DDG) and all the engineering systems of DDG;

  • MDPC air conditioning system status control (mode of operation, fails, working hours, etc.);

  • control and handling over combined exact and input ventilation aeration system;

  • journaling of the event and incident log;

  • on-line personnel alert via E-mail and SMS in case of appearance of incidents.


Elementary units and solutions of the company “NAG” are applied in SCS implementation in the data processing centers (DPCs).

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SCS of the DPC are divided into 3 adjunct systems depending on the functions and elementary units:

  • fiber-optic adjunct system of SCS;

  • SCS;

  • technological adjunct system of SCS (TSCS).