What is data center?

- Dec 10, 2018-

Data center: the general name of the workplace and production unit of the old manual and silk cotton industry; now refers to the computer learning room; in the IT industry, the computer room generally refers to telecommunications, Netcom, mobile, dual-line, electricity, and government or enterprises, etc. The place where the server provides IT services to users and employees.


As a Data center (computer study room / data center), its physical environment is strictly controlled, mainly divided into several aspects: temperature, power, floor, fire protection system.


Temperature

When it comes to temperature, it is generally used in air conditioning. Air conditioning is used to control the temperature and humidity of the data center. The Refrigeration and Air Conditioning Engineering Association's "Data Processing Environmental Thermal Guidelines" recommends a temperature range of 20-25 ° C (68-75 ° F) and a humidity range of 40-55%, suitable for data centers. The maximum dew point temperature of the environment is 17 °C. The power in the data center will heat the air, unless the heat is removed, the ambient temperature will rise, causing the electronic device to malfunction. By controlling the air temperature, the server components are able to maintain the temperature/humidity range specified by the manufacturer. The air conditioning system helps to control humidity by cooling the room air down to the dew point. The humidity is too high and the water may begin to condense on the internal components. If it is in a dry environment, the auxiliary humidification system can add water vapor, because if the humidity is too low, it may cause electrostatic discharge problems, which may damage the components.


Power supply

The power supply to the equipment room consists of one or more uninterruptible power supplies (UPS) and/or diesel generators. To avoid single points of failure, all power systems, including backup power, are fully redundant. For critical servers, connect to both power supplies simultaneously to achieve the reliability of an N+1 redundant system. Static switches are sometimes used to ensure that power is switched from one power source to another in the event of a power failure.


Floor

The floor of the machine room is 60 cm (2 feet) higher than the tile floor. This height has become higher with the development of the society, 80-100 cm to provide a better even distribution of airflow. In this way, the air conditioning system can also pump cold air under the floor, and also provide more space for underground power line wiring. The data cable of the modern data center is usually laid through the overhead cable tray, but some people still recommend it for safety reasons. The data line should be laid under the floor and consider adding a cooling system. There are no raised floors in small data centers that can be used without anti-static floors. Computer cabinets are often organized into a hot aisle to maximize air circulation.


Fire protection system

The fire protection system in the equipment room includes passive and active design, as well as fire action implementation plans. A smoke detector is usually installed to detect the fire ahead of the fire before the fire is generated. The power can be cut off before the fire increases, and the fire extinguisher can be used to manually extinguish the fire. Automatic sprinklers cannot be used in data centers because electronic components typically fail when exposed to water, especially if the power is not cut off. Even if a sprinkler system is installed, the clean gas fire suppression system should be started earlier than the sprinkler system. A firewall should also be installed in the data center so that the fire source can be controlled to a local extent, even in the event of a fire.