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GB 50174-2017 English PDF (GB50174-2017)

GB 50174-2017 English PDF (GB50174-2017)

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GB 50174-2017: Code for design of electronic information system room

To standardize the design of the data center, ensure that the electronic information system operates safely, stably and reliably, make the technology advanced, economically reasonable, safe and applicable, energy saving and environmental protection, this code is formulated.
GB 50174-2017
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
UDC
P GB 50174-2017
Code for design of data centers
ISSUED ON: MAY 04, 2017
IMPLEMENTED ON: JANUARY 01, 2018
Issued by: Ministry of Housing and Urban-Rural Development of PRC;
General Administration of Quality Supervision, Inspection and
Quarantine of PRC.
Table of Contents
Foreword ... 6
1 General provisions ... 9
2 Terms and symbols ... 10
2.1 Terms ... 10
2.2 Symbols ... 15
3 Rating classification and required features ... 16
3.1 Rating classification ... 16
3.2 Required features ... 16
4 Site selection and equipment layout ... 18
4.1 Site selection ... 18
4.2 Composition ... 18
4.3 Equipment layout ... 19
5 Environmental requirement ... 21
5.1 Temperature, dew point temperature and airborne particle concentration ... 21 5.2 Noise, electromagnetic interference, vibration and static electricity ... 21 6 Building and structure ... 22
6.1 General requirements ... 22
6.2 People flow and goods flow, entrances and exits ... 23
6.3 Retaining structure thermal design and energy saving measures ... 23 6.4 Interior design ... 24
7 Air conditioning ... 26
7.1 General requirements ... 26
7.2 Thermal load calculation ... 26
7.3 Airflow management ... 27
7.4 System design ... 27
7.5 Equipment selection ... 29
8 Electrical systems ... 31
8.1 Power supply and distribution ... 31
8.2 Lighting ... 33
8.3 Electrostatic discharge protection ... 34
8.4 Lightning protection and grounding ... 35
9 Electromagnetic shielding ... 37
9.1 General requirements ... 37
9.2 Shielding structure ... 37
9.3 Shielding objects ... 38
10 Network and cabling system ... 39
10.1 Network system ... 39
10.2 Cabling system ... 39
11 Intelligent system ... 42
11.1 General requirements ... 42
11.2 Environment and equipment monitoring ... 42
11.3 Security system ... 43
11.4 Enterprise command center ... 43
12 Water supply and drainage ... 45
12.1 General requirements ... 45
12.2 Piping layout ... 45
13 Fire protection and safety ... 46
13.1 General requirements ... 46
13.2 Fire prevention and evacuation ... 46
13.3 Fire protection facilities ... 48
13.4 Safety measure ... 49
Appendix A -- Technical requirements for data center ratings ... 50
Explanation of wording in this code ... 59
List of quoted standards ... 60
Code for design of data centers
1 General provisions
1.0.1 To standardize the design of the data center, ensure that the electronic information system operates safely, stably and reliably, make the technology advanced, economically reasonable, safe and applicable, energy saving and environmental protection, it hereby formulates this code.
1.0.2 This code applies to the design of newly built, rebuilt, expanded data centers.
1.0.3 The design of the data center shall follow the principle of coordination between the recent construction scale and the long-term development plan. 1.0.4 In addition to complying with this code, the design of the data center shall also comply with the relevant national standards.
2 Terms and symbols
2.1 Terms
2.1.1 Data center
A building site that provides an operating environment for a centralized electronic information equipment, which may be one or several buildings, or may be part of a building, including a computer room, an auxiliary area, a support area, an administrative area.
2.1.2 Computer room
A building space which is mainly used for the installation and operation of data processing equipment, including the server room, network room, storage room and other functional areas.
2.1.3 Auxiliary area
A place for installation, commissioning, maintenance, operation monitoring and management of electronic information equipment and software, including wire- incoming room, test equipment rooms, general control centers, fire and security control rooms, unpacking areas, spare parts warehouses, printing rooms, maintenance room and other areas.
2.1.4 Support area
Areas providing power support and safety for the computer room and auxiliary area, including power transform and distribution room, diesel generator room, battery room, air-conditioning room, power station room, uninterruptible power supply system, fire-fighting facilities, etc.
2.1.5 Administrative area
A place which is used for daily administrative management and management of equipment as entrusted by customers, including offices, foyers, duty rooms, washrooms, locker rooms, user studios, etc.
2.1.6 Business recovery data center
A place wherein the critical business functions such as data processing and support are continued in case of a disaster to substitute the operation of the production system, including restricted areas, regular areas, dedicated areas. 2.1.7 Restricted area
2.1.16 Electromagnetic shielding
The use of conductive material to reduce the penetration of the alternating electromagnetic field into the designated area.
2.1.17 Electromagnetic shielding enclosure
A building space which is specifically designed to attenuate and isolate the internal or external electric and magnetic fields.
2.1.18 Cut-off waveguide vent
A device which integrates the cut-off waveguide with the vent, which allows air to circulate and attenuate electromagnetic waves in a certain frequency range. 2.1.19 Modular electromagnetic shielding enclosure
An electromagnetic shielding enclosure which, according to the design
requirements, has modular structures and is assembled at construction site by the pre-formed shielding enclosure modular plate, structural member, shielding components, etc.
2.1.20 Welded electromagnetic shielding enclosure
An electromagnetic shielding enclosure whose main structure is a fixed
structure built by field welding.
2.1.21 Remote power panel (RPP)
An equipment which provides power distribution management equipment for cabinets arranged in rows or by functional area.
2.1.22 Horizontal distribution area cabinet
A horizontal distribution area device that provides network services for cabinets arranged in rows or by functional area.
2.1.23 Intelligent cabling management system
A complete software and hardware integration system which realizes intelligent management of tracking, recording, reporting of the connection status of the wiring system and network equipment through real-time monitoring of the port connection properties of the electronic distribution equipment.
2.1.24 Static state
The air conditioning system of the computer room is in normal operation; the indoor temperature and dew point temperature meet the operational
requirements of the electronic information equipment; but the electronic bundle, a bonding bar, or an equipotential bonding grid.
2.1.34 power usage effectiveness (PUE)
A parameter that characterizes the efficiency of power utilization in a data center. The value is the ratio of the total electrical energy consumed by all powered devices in the data center to the total electrical energy consumed by all electronic information equipment.
2.1.35 Water usage effectiveness (WUE)
A parameter that characterizes the water usage efficiency of a data center. The value is the ratio of the total water consumed by all water equipment in the data center to the total energy consumed by all electronic information equipment. 2.1.36 Automatic transfer switching equipment (ATSE)
An electrical appliance consisting of one or several transfer switching equipment and other necessary electrical appliances, for monitoring the power supply circuit and automatically switching one or more load circuits from one power source to another.
2.1.37 Computational fluid dynamics (CFD)
The calculation method of using the computer simulation to solve the fluid mechanics equation, analyzing the physical phenomena such as fluid flow and heat transfer, to obtain the temperature field, pressure field, velocity field. 2.1.38 Duplicate-supply
A load of power is provided by two circuits that are considered to be
independent of each other in terms of safe power supply.
2.1.39 Enterprise command center (ECC)
A platform for centralized monitoring, command and dispatch, technical support, and emergency drills for data center systems. It can also be called a monitoring center.
2.1.40 Uninterruptible power system (UPS)
A system consisting of a combination of a converter, a switch, an energy storage device that delivers AC or DC power during normal or faulty input power, to maintain continuity of power to the load for a certain period of time.
2.1.41 Total cost of ownership (TCO)
The sum of construction and operating costs over the life of the data center. 3 Rating classification and required features
3.1 Rating classification
3.1.1 Data centers shall be divided into three levels: A, B, C. During design, it shall, based on the usage nature of the data center, the economic or social loss or impact due to the loss of data or the interruption of network, determine the level.
3.1.2 A data center that meets one of the following conditions shall be level A: 1 The interruption of the operation of the electronic information system will cause significant economic losses;
2 The interruption of the operation of the electronic information system will cause serious disorder in public places.
3.1.3 A data center that meets one of the following conditions shall be level B: 1 The interruption of the operation of the electronic information system will cause greater economic losses;
2 The interruption of the operation of the electronic information system will cause disorder in public places.
3.1.4 Data centers that are not level A or level B shall be Level C.
3.1.5 The business recovery data center established in the same city or in different places should be designed at the same level as the primary data center. 3.1.6 The data center?€?s infrastructure components should be designed
according to the same level of technical requirements; or can be designed according to different levels of technical requirements. When the components are designed according to different levels, the level of the data center shall be determined according to the lowest level of the components.
3.2 Required features
3.2.1 The infrastructure of the level A data center shall be configured according to the fault-tolerant system. During the operation of the electronic information system, the infrastructure shall ensure the normal operation of the electronic information system after an accident or maintenance or overhaul of the single- system equipment.
3.2.2 When the level A data center meets the following requirements at the 4 Site selection and equipment layout
4.1 Site selection
4.1.1 Data center location shall be selected according to the following requirements:
1 The power supply shall be sufficient and reliable; the communication shall be fast and smooth; the traffic shall be convenient;
2 For the data center which is cooled by water evaporation cooling method, the water source shall be sufficient;
3 The natural environment shall be clean; the ambient temperature shall be conducive to energy conservation;
4 It shall be away from the production of dust, soot, harmful gases and the production or storage of corrosive, flammable, explosive materials;
5 It shall be away from flood hazards, earthquakes and other areas of natural disasters;
6 It shall be away from strong vibration sources and strong noise sources; 7 It shall avoid strong electromagnetic field interference;
8 The level A data center should not be built directly above the public parking garage;
9 The large and medium-sized data centers should not be built in residential and commercial areas.
4.1.2 For the data center at a local area in the building, when determining the location of the computer room, it shall conduct comprehensive analysis and economic comparison for such issues as safety, equipment transportation, pipeline laying, lightning induction, structural load, flooding, installation location of outdoor equipment of the air conditioning system.
4.2 Composition
4.2.1 The composition of the data center shall be determined according to the operating characteristics of the system and the specific requirements of the equipment. It should be composed of the computer room, auxiliary area,
support area, administrative area, other functional areas.
5 Environmental requirement
5.1 Temperature, dew point temperature and airborne particle
concentration
5.1.1 The temperature, dew point temperature and relative humidity in the computer room and auxiliary area shall meet the requirements for the use of electronic information equipment. When the electronic information equipment has not been determined, it shall be implemented in accordance with Appendix A of this code.
5.1.2 The airborne particle concentration in the computer room shall be tested under static or dynamic conditions. The number of suspended particles with a particle size greater than or equal to 0.5 ??m per cubic meter of air shall be less than 17.6 million.
5.1.3 The indoor air quality after the decoration of the data center shall comply with the relevant provisions of the current national standard ?€?Indoor air quality standard?€? GB/T 18883.
5.2 Noise, electromagnetic interference, vibration and static
electricity
5.2.1 In the enterprise command center, the noise value measured at the long- term fixed working position shall be less than 60 dB(A).
5.2.2 The radio interference field intensity of the computer room and the auxiliary area shall not exceed 130 dB (??V/m) in the frequency range of 80 MHz ~ 1000 MHz and 1400 MHz ~ 2000 MHz; the field strength of the power
frequency field shall not exceed 30 A/m.
5.2.3 Under the condition of electronic information equipment shutdown, the vertical and horizontal vibration acceleration of the floor surface of the computer room shall not exceed 500 mm/s2.
5.2.4 The absolute value of the electrostatic voltage of the insulator in the computer room and auxiliary area shall not be greater than 1 kV.
6 Building and structure
6.1 General requirements
6.1.1 The design of the building and structure shall be carried out in accordance with the level of the data center in accordance with Appendix A of this Code. 6.1.2 The layout and building plane and space shall be flexible and shall meet the process requirements of the data center.
6.1.3 The net height of the computer room shall be determined according to the height of the cabinet, pipeline installation, ventilation requirements. When building a new data center, the net height of the computer room shall not be less than 3.0 m.
6.1.4 The deformation joint should not pass through the computer room.
6.1.5 The computer room and auxiliary area shall not be placed directly below the water usage area and shall not be adjacent to sources of vibration and electromagnetic interference.
6.1.6 For the data center with technical interlayer and technical clamping, the building design shall meet the installation and maintenance requirements of various equipment and pipelines. When the pipeline needs to cross the floor, it should provide a technical shaft.
6.1.7 The seismic fortification category of the data center shall not be lower than category C. The seismic fortification category of the newly built Level A data center shall not be lower than category B.
6.1.8 The reconstructed data center shall be subjected to seismic identification according to the load requirements, meanwhile it shall comply with the relevant provisions of the current national standard ?€?Standard for seismic appraisal of buildings?€? GB 50023. Buildings that require seismic strengthening after seismic identification shall be reinforced according to the current national standard ?€?Code for design of strengthen concrete structure?€? GB 50367, ?€?Technical specification for seismic strengthening of buildings?€? JGJ 116, ?€?Technical specification for post-installed fastenings in concrete structures?€? JGJ 145. When a building with a seismic fortification category of level C is reconstructed into a level A data center, the building may not be reinforced if use load meets requirements.
6.1.9 The completion level of the first-floor building of the newly built level A data center shall be above 1.0 m higher than the water level of the local flood in the 100-year return period, meanwhile it shall be above 0.6 m higher than the battery room is equipped with an external window, it shall avoid direct sunlight. 6.4 Interior design
6.4.1 The combustion performance of the materials used for interior decoration design shall comply with the relevant provisions of the current national standard ?€?Code for fire prevention in design of interior decoration of buildings?€? GB 50222. 6.4.2 Interior decoration of the computer room shall use the materials with good air tightness, no dust, easy to clean, meet environmental protection
requirements, have small deformation under surface temperature and humidity, have surface static dissipative properties. It shall not use the material of strong hygroscopicity and the high polymer insulating material without surface modification treatment.
6.4.3 The decoration of the wall and ceiling of the computer room shall meet the functional requirements. The surface shall be flat, smooth, dust-free, avoid glare, reduce the uneven surface.
6.4.4 The ground design of the computer room shall meet the functional
requirements. When laying the anti-static raised floor, the height of the raised floor shall be determined according to the cable wiring and air-conditioning requirements, and shall meet the following requirements:
1 When the space under the raised floor is only used as cable wiring, the floor height should not be less than 250 mm. The floor and four-wall
decoration under the raised floor can be plastered with cement mortar.
The floor material shall be flat and wear resistant.
2 When the space under the raised floor is used as both cable wiring and static pressure chamber for air-conditioner, the floor height should not be less than 500 mm. The floor and the four-wall decoration under the raised floor shall be made of materials that are not dusty, easy to accumulate, easy to clean. Floor or ground shall be thermal insulated and moisture- proof. A layer of ground cushion should be reinforced. The retaining
structure should adopt anti-condensation measures.
6.4.5 The walls and ceiling surfaces of the technical interlayer shall be flat and smooth. When using a lightweight construction ceiling as a technical interlayer, it should set up an access passage or access.
6.4.6 When water equipment is installed in the computer room, it shall take measures to prevent water overflow and leakage.
6.4.7 The structure and construction joints of doors, windows, walls and floors (grounds) shall use airtightness measures.
7 Air conditioning
7.1 General requirements
7.1.1 The design of air conditioning system of the data center shall be performed based on the level of the data center in accordance with Appendix A of this code. The design of the air conditioning system shall comply with the relevant provisions of the current national standard ?€?Design code for heating ventilation and air conditioning of civil buildings?€? GB 50736.
7.1.2 A data c...

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