Industry knowledge on size and selection of Server Cabinets

In the construction of data center infrastructure, Server Rack Cabinets are one of the core load-bearing devices, and their size standardization and normalization directly affect the efficiency of equipment deployment, operational convenience, and overall system stability. As the core unit for measuring the external dimensions of servers, "U" is an abbreviation for Unit. The unified regulations of this unit enable servers to accurately adapt to rack installation. After the preset fixed screw holes on the rack are accurately aligned with the server screw holes, deployment can be completed by fixing them with screws, effectively ensuring the rationality and standardization of the installation space required for each server.

In the deployment scenario of Rack Mount Cabinet, 1U, 2U, and 4U servers are the mainstream specifications of rack mounted servers, and their sizes strictly follow the U unit standard: 1U=4.445CM, 2U=4.445 × 2=8.89CM, 4U=4.445 × 4=17.78CM. From practical applications, 1U and 2U servers are the most widely used, and the core reason is that service providers usually charge based on the space occupied by the server. 1U servers have the advantages of the highest space utilization and the lowest deployment cost, but their scalability is limited compared to 2U servers. Specifically, a 1U server can accommodate up to 4 3.5-inch hard drives, while a 2U server can accommodate 8 or more 3.5-inch hard drives; In terms of PCI slot configuration, a 1U server can provide up to 2 slots, while a 2U Data Center Rack can provide up to 6 slots, which can better meet the expansion needs of multiple devices.

A 42U Server Rack is a common cabinet specification in data centers, but it should be noted that the height of a 42U cabinet does not necessarily mean that 42 1U servers can be directly deployed. After device deployment, it is necessary to reserve space for heat dissipation and device movement, as well as installation positions for wiring, switches, firewalls, displays, and other supporting equipment. Therefore, the actual number of deployable servers needs to be comprehensively calculated based on specific device parameters.

When determining the number of 42U Cabinets deployments, two core parameters need to be considered: first, the physical parameters of the server itself, such as volume, power consumption, and heat generation; The second is the basic parameters such as power supply capacity, cooling efficiency, and load-bearing performance of the cabinet. Based on these parameters, the following core principles can be referred to: firstly, reserve 1U heat dissipation space between equipment, and plan the installation location of switches and PDUs; The second is that the Server Rack On Wheels usually provides 10KW redundant power supply, with a static load capacity of not less than 1200kg (specific needs to be determined based on the construction parameters of the computer room); Thirdly, under the premise of not exceeding the load power supply, the cumulative number of equipment U in the cabinet generally does not exceed 26U, the deployment quantity of all 1U equipment usually does not exceed 16, all 2U equipment does not exceed 12, and all 4U equipment is 4 to 7.

Data Cabinet plays multiple core roles in data centers, with the primary function being to optimize the overall layout standardization of the data center. Based on the industry standard of 19-inch equipment installation width, the standardized deployment of cabinets can effectively improve the overall cleanliness and management convenience of the data center. Secondly, cabinets with intelligent heat dissipation function can significantly save energy consumption during the operation of the computer room. If a large amount of heat generated during the operation of communication equipment accumulates in the cabinet, it will seriously affect the stable operation of the equipment. Intelligent air supply cabinets can adjust the heat dissipation strategy as needed according to the number of devices installed in the cabinet, air conditioning power supply wiring, and other infrastructure configurations to avoid energy waste. At the same time, they support full load operation of the equipment, which can save about 20% of operating costs compared to traditional cabinets, and the energy-saving effect is significant. In addition, for scenarios where the operating environment and security requirements of the data center are high, Server Cage can achieve intelligent management, with core intelligent functions reflected in multi-dimensional monitoring and linkage control.

The intelligent monitoring function of the Intelligent Floor Standing Data Cabinet mainly covers six core modules: firstly, the temperature and humidity monitoring function. The cabinet is equipped with temperature and humidity detection devices inside, which can monitor the internal environment temperature and humidity in real time and display data on the monitoring touch screen in real time; The second is the smoke detection function, which realizes real-time monitoring of fire protection status through built-in smoke detectors, and triggers an alarm immediately on the display interface when abnormalities occur; The third is the intelligent heat dissipation function, where users can preset a temperature range. When the temperature inside the cabinet exceeds the preset range, the heat dissipation unit will automatically start working; The fourth is the system status detection function, which intuitively displays the working status and data information collection alarm status of Small Comms Cabinet through LED indicator lights and LCD touch screen, with a clear and easy to read interface; The fifth is the intelligent device access function, which supports the access to intelligent power meters, UPS uninterruptible power supplies and other intelligent devices through RS485/RS232 communication interface and Modbus communication protocol, and reads and displays relevant data parameters in real time; The sixth is the dynamic output function of the relay. When receiving the preset system logic linkage signal, it can send normally open/normally closed instructions to the hardware interface DO channel to drive external devices such as sound and light alarms and fans to work.