Data centers at different levels can be designed according to the electronic information system room design specifications

The electronic information system room design is standardized so that data centers of different levels can rely on it

When the "Electronic Information System Computer Room Design Specification" project was established, the compilation team determined four elements: scientificity, advancement, coordination and implementability.

Modern data centers have different scales, applications, and needs. How can data centers at different levels be based on evidence? That is, how to achieve implementability? Zhong Jinghua explained: "At that time, the establishment team and experts believed that the computer room must be classified, and this coincided with the American Communications Industry Association standard TIA/EIA-942 "Data Center Communication Facilities Standard" that had not been published at that time."

A few months after the project establishment meeting, the TIA/EIA-942 standard was released in China, and the preparation team immediately started the translation work. However, they believe that the classification of the new standard cannot completely refer to TIA-942, because the T3 level is not suitable for China's national conditions. Level T3 requires the system to adopt a "one-use, one-standby" operation mode, that is, it directly switches to mains power during maintenance of the main system. This approach is feasible when the power quality is good. However, domestic power supply harmonics and instantaneous power outages are common. If mains power is used directly, there may be risks of information loss, transmission errors, or equipment damage. Therefore, China needs to make corresponding adjustments and improvements based on the characteristics of the domestic power environment to ensure the stability and reliability of the system.

The new specification will divide electronic information system rooms into three levels: A, B, and C based on their nature of use, management requirements, and importance in the economy and society. Level A corresponds to T4 of TIA/EIA-942, level B corresponds to T2 of TIA/EIA-942, and level C corresponds to T1 of TIA/EIA-942. Although T3 can be classified as Class A, it needs to be designed with necessary improvements. This is the most significant difference between the new norm and the old norm.

The new specification also adds terms and symbols, computer room classification standards, electromagnetic shielding, network cabling, computer room monitoring and safety precautions, etc., and includes appendices.

What issues need to be paid attention to when building a network computer room? What are the standards

The decoration of the computer room must first be designed and planned in accordance with relevant standards and technical specifications, and based on the specific selection of equipment and installation requirements. Secondly, it must try to create a reasonable working environment under the conditions of lighting, dustproof, and sound insulation. Among them, Things to consider are: ceiling and wall decoration materials and structures should meet fire protection requirements, use flame-retardant decoration materials, and have surface flame-retardant coating treatments to meet the requirements of flame retardancy and arson. The computer room floor is preferably an anti-static floor with a wear-resistant anti-static veneer. It has good anti-static performance and will not deform or fade after long-term use. The floor clearance height is usually 10-50cm. The room should comprehensively consider the configuration of lighting fixtures, air conditioning and humidity equipment: double-layer alloy glass windows should be installed for sound insulation and dust prevention, with blackout curtains, etc.

Height and space of computer room

The height and space of the computer room should consider the net height after laying the floor and ceiling decoration. Since most computer rooms use downward cable entry, wiring troughs and ventilation must be laid under the floor. The clear height of the floor is generally about 10-50cm. The ceiling of the roof generally needs to be flush with the lower part of the lintel, and enough lighting and fire-fighting equipment must be left dark. The buried height usually occupies a certain height. In this way, the net height of the room is reduced by nearly 1m. The height of ordinary buildings will appear lower after the computer room is decorated, which is not conducive to the installation of equipment. The clear height of the house should be in the range of 3.2m~3.3m (the computer room should be equipped with wiring racks or channels). At present, air supply ducts should be installed under the floor of large computer rooms. Therefore, when designing building facilities, the computer room building or specific floors and computer rooms should be designed as a whole. For central computer rooms, with the development of new technologies and equipment, the business will continue to expand. Some equipment space should be appropriately reserved according to the medium and long-term development trends. Computer room equipment is generally installed according to the principle of isolation between cabinets and operation rooms. In particular, switches, optical transmission equipment, cluster equipment, etc. have a high degree of automation. The network management system can complete most of the equipment debugging, monitoring and system operations, without the need to frequently enter the cabinet room. This can reduce the impact of human factors on the equipment.

Intersection of signal cable and power supply cable

Relevant specifications should be followed, and attention should be paid to the fact that parallel cables should be separated from each other by a distance of not less than 50~60cm during civil construction reservations. Special attention should be paid when the shaft passes through the floor, and the distance should be maintained as much as possible to avoid power lines interfering with communication transmission. In computer rooms, station area communications, power line-dense manholes, and cable rooms, more attention must be paid to the optimal layout of their respective coils and paths.

Fire protection in computer room

It is necessary to consider the fire extinguishing design of the computer room, and determine the design plan of the computer room according to the fire protection level setting. The building must first have conventional fire hydrants, fire escapes, etc., and install smoke and temperature detection devices according to the computer room area and equipment distribution. Automatic alarm bells and indicators, automatic/manual fire extinguishing equipment and equipment. For fire alarm in the computer room, a duty room or monitoring point should be set up on the first floor.

requires attention

The country has promulgated corresponding specifications and requirements for the fire protection design of computer rooms. After formulating the plan, you should take the initiative to submit it to the fire department for approval in a timely manner. At the same time, pay attention to the coordination and adaptation of the decoration of the computer room and fire protection. Otherwise, the rectification workload during acceptance will be large and easy. causing construction losses.

Lightning protection of computer room building

Since the computer room communication and power supply cables are mostly introduced from the outside into the computer room, they are susceptible to lightning attacks. The architectural lightning protection design of the computer room is particularly important, but this is often ignored in the usual station area architectural design. The architectural lightning protection of the computer room In addition to effectively protecting the safety of the building itself, it should also lay a good foundation for lightning protection and working grounding of equipment. Mechanical and electrical projects often use joint grounding methods, and system equipment grounding is connected to the building ground. After the building lightning protection design and construction is completed, the accurate location and layout diagram of the system grounding grid or grounding ring belt should be provided to avoid conflicts between the equipment grounding grid and the building grounding grid. Due to the special requirements of joint grounding, it is prohibited to directly use building ground wires and power supply ground wires as ground wires for system equipment in mechanical and electrical engineering.

When the design site selection and design height are met, if the computer room architectural design can be used to build an iron tower on the roof of the building in the civil engineering design, it is an economical and affordable solution, and there are many successful experiences in various places.

What knowledge is needed for computer room construction

1. The distance between the passage and equipment in the host room should comply with the following regulations:

1. The clear width of the channel used for transporting equipment should not be less than 1.5m;

2. The distance between the fronts of cabinets or racks arranged face to face should not be less than 1.2m;

3. The distance between the backs of cabinets or racks arranged back to back should not be less than lm;

4. When maintenance and testing are required on the side of the cabinet, the distance between cabinets and cabinets and the wall should not be less than 1.2m;

5. When the length of cabinets arranged in rows exceeds 6m, exit channels should be provided at both ends; when the distance between the two exit channels exceeds 15m, an exit channel should be added between the two exit H channels. . The width of the exit channel should not be less than lm, and it can be 0.8m in some places.

2. People flow, logistics and entrance and exit:

1. The main computer room should be equipped with a separate entrance and exit. When sharing the entrance with other functional rooms, the intersection of people and logistics should be avoided.

2. The manned operation area and the unmanned operation area should be arranged separately.

3. The width of the passage and the size of the door in the computer room of the electronic information system should meet the transportation requirements of equipment and materials. The clear width of the passage from the building entrance to the main computer room should not be less than 1.5m.

The electrostatic potential of the insulators in the main engine room and auxiliary area should not be greater than 1kV.

The fire resistance level of the electronic information system room should not be lower than Level 2.

The metal casings of all equipment in the electronic information system room, various metal pipes, metal trunking, metal structures of buildings, etc. must be equipotentially bonded and grounded.

The electronic information system room should be equipped with an automatic fire alarm system.

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