The emergence of cloud computing technology has made the construction of data centers present a trend of large-scale and intensive. As a pioneer in the field of data centers, the ISP industry has stepped into it one after another. Generally speaking, a data center consists of the following systems.

　　 1. Fire fighting system

　　 The machine room should be equipped with a gas extinguishing system. The gas cylinder room should be set outside the machine room. It is a pipe network structure with nozzles on the ceiling. The fire alarm system is composed of a fire control box, smoke detectors, and temperature detectors. The fire-fighting system of the machine room should adopt a gas fire-fighting system, and the commonly used gases are heptafluoropropane and sde.

　　2, precision air conditioning system

　　The task of the precision air conditioning system in the computer room is to ensure the continuous, stable and reliable operation of the equipment in the computer room. It needs to discharge the heat emitted by the equipment and other heat sources in the computer room, maintain the constant temperature and humidity in the computer room, and control the dust content of the air in the computer room. For this reason, the precision air-conditioning system of the computer room is required to have the ability of air supply, return air, heating, humidification, cooling, dehumidification and air purification. The precision air-conditioning system of the computer room is an important equipment to ensure a good environment of the computer room, and a constant temperature and humidity precision air-conditioning system should be adopted.

3. Monitoring and access control system

　　 There are a large number of servers, cabinets, and racks in the monitoring room. Because cabinets and racks are generally taller, there are many dead spots for monitoring. Therefore, each entrance and exit is mainly considered when TV monitoring is arranged, and cameras are installed between each row of cabinets.

　　 If the space at the entrances and exits is relatively large, a camera with zoom can be considered. Between each row of cabinets, a fixed-focus camera can be equipped according to the monitoring distance. If there are multiple rooms in the computer room, consider installing cameras in the UPS room and the control room.

　　The computer room access control system mostly uses a non-contact smart IC card integrated management system. The system can flexibly and conveniently specify the personnel, time, and authority to enter the computer room, prevent damage caused by human factors, and ensure the safety of the computer room.

　　4, shielding system

　　Electromagnetic interference has a great impact on computer equipment, ranging from misoperation and data loss to the worst, making the computer unable to work.

　　Computer room shielding mainly prevents various electromagnetic interference from damaging the equipment and signals in the computer room. There are two common types: metal mesh shielding and metal plate shielding.

5. Grounding system

　　 A good grounding system should be installed in the computer room to make the power supply have a stable zero potential. As the reference voltage of the power supply system voltage, there is a good grounding wire. When the power supply voltage and signal in computer transmission encounter or produce various interferences, they can be filtered out by high and low frequency filter capacitors. In addition, when encountering lightning, strong power sources near the cabinet, and electric spark interference, a good grounding system in the computer room should be able to protect the computer. Therefore, it is very important to design a good computer room grounding system.

　　(1) DC grounding: This grounding system grounds the power output through the grounding grid to make it a stable zero potential. This power ground wire is directly connected to the earth and has a small grounding resistance.

　　 (2) AC grounding: This grounding system connects the ground wire of the AC power source with the grounding point of AC electric equipment such as motors and generators, and then connects to the ground.

　　 (3) Safe ground: In order to shield external interference, leakage and electric sparks, all computer cabinets, cases, casings, panels and motor shells need to be grounded and shielded, and the system can be a safe ground.

　　 General requirements: DC ground resistance is less than 1 ohm, AC ground resistance is less than 4 ohms, and safety ground resistance is less than 4 ohms. AC working grounding, safety protective grounding, DC working grounding, and lightning protection grounding should share a set of grounding devices, and the grounding resistance should be less than 1 ohm. The connection mode of the grounding system can be selected according to the geographical characteristics of different connection modes: radial, ring or grid matrix and other forms.

6. Laying of anti-static floor

　　 In the construction of computer room engineering, ground engineering is a very important part. The floor of the machine room generally adopts antistatic raised floor, which is mainly composed of two parts:

　　A Antistatic raised floor board;

　　B Floor support system, mainly the beam support angle (the support angle is divided into upper and lower brackets, and the screw can be adjusted to adjust the level of the floor). The specifications are mainly 600*600mm. The laying height is: 350±20mm, the general resistance value is between 1×107-1×1010ω, and the distributed load: more than 1500kg/m2.

　　The raised floor is detachable. Therefore, it is very convenient to connect the wires and cables of all equipments, to connect the pipes and to repair and replace.

The space under the raised floor can be used as a static pressure air supply air storage. The cold air sent by the computer room air conditioner is sent into the room and the cabinet of the heating equipment through the raised floor with air distribution air outlets. Due to the interchangeability of the air air outlet floor and the general raised floor, Therefore, the air distribution in the machine room can be adjusted freely.

　　The ground surface under the raised floor generally needs to be treated with moisture-proof treatment (such as damp-proof paint, etc.). When the anti-static floor is installed, it is required to install an electrostatic leakage system. Lay the static leakage ground net and seal the static leakage trunk line with the grounding terminal of the equipment room's safety protection ground to leak static electricity.

　　7, power distribution system

　　 (1) UPS uninterruptible power supply

　　 The computer room load is divided into main equipment load and auxiliary equipment load.

The main equipment load refers to the computer and network system, computer peripheral equipment and computer room monitoring system. This part of the power supply and distribution system is called the "equipment power supply and distribution system", and its power supply quality requirements are very high, and UPS uninterruptible power supply should be used to ensure power supply The stability and reliability.

　　 Auxiliary equipment load refers to air-conditioning equipment, power equipment, lighting equipment, test equipment, etc. The power supply and distribution system is called the "auxiliary power supply and distribution system", and the power supply is directly supplied by the mains.

　　 In high-demand computer room projects, the UPS uninterruptible power supply can use direct parallel technology, and its power supply and distribution system is called N+1 redundant parallel technology. It can ensure that when one UPS fails, it can still provide uninterrupted and highly reliable power supply for all loads. When capacity expansion is needed, only the existing parallel system needs to be directly connected in parallel without adding a new UPS power supply system. Can effectively save costs. High-quality cables, trunking and sockets should be selected for electrical construction in the equipment room. Sockets should be divided into special waterproof sockets for mains, UPS and main equipment.

　　 (2) Distribution cabinet

　　The computer room often uses a special power distribution cabinet for the computer room to standardize the power supply and distribution system of the computer room, and ensure the safety and reasonableness of the power supply and distribution system in the computer room. The distribution box and cabinet shall be protected against short circuit and over current, and the emergency power off button shall be interlocked with the fire alarm. After installation, number it and indicate the purpose of each switch in the box and cabinet for easy operation and maintenance. There are spare circuits in the distribution boxes and cabinets to use electricity when the equipment room is expanded.

The above is just a brief description of the issues that need attention in the construction of the computer room from the aspects of power distribution facilities, weak current control and equipment protection. In fact, the computer room construction project is a collection of computer network technology, communication technology, building decoration, and weak current control. , Air conditioning, electrical engineering, electronics, automatic detection and control, environmental protection, safety precautions, anti-interference and other multi-disciplinary and multi-field integrated system engineering.

A central computer room with advanced, reasonable, practical, expandable, displayable, unique design, novel materials, and sophisticated construction must have a certain historical vitality, and the design and construction of the data center computer room must adhere to the right direction. problem.

　　 (Source: Computer Room 360)