I. Classification
1. Classification by appearance
(1) Open type
Open type cabinets have no door panels or only part of the door panels, and no side panels. They are suitable for places with low ambient temperature, but they are not safe enough and are easily disturbed by external factors.
(2) Semi-enclosed type
Semi-enclosed cabinets usually have only front doors, and side panels are set to ensure ventilation and equipment safety. They are suitable for equipment with relatively stable environmental conditions, such as network equipment and storage equipment.
(3) Closed type
Closed type cabinets are completely enclosed and have closed door panels. They are very safe and are usually used to install equipment with high environmental requirements, such as servers, but heat dissipation treatment is required according to actual conditions.
(4) Wall-mounted type
Wall-mounted cabinets can be fixed on the wall and do not occupy floor space. They are small in size, easy to install, and simple in structure. They effectively save space in the computer room. They are suitable for places with small spaces and are often used to install light network equipment, such as routers and switches.
2. Classification by purpose
(1) Server cabinet
Server cabinets are cabinets specifically used to store and manage server equipment. It usually has a large capacity, can accommodate multiple servers, and provides good heat dissipation and power management functions. The server cabinet will also take into account the wiring inside the cabinet, network access, etc., so as to facilitate the interconnection and data transmission between servers.
(2) Network cabinet
Network cabinets are mainly used to store and manage network equipment, such as switches, routers, firewalls, etc. The cabinet provides appropriate installation space and wiring channels to support the connection and management of network equipment. Network cabinets also consider factors such as ventilation, heat dissipation and power management.
(3) Communication cabinets
Communication cabinets are mainly used to store and manage communication equipment, such as telephone switches, transmission equipment, optical fiber terminals, etc. They usually have structures and configurations suitable for the installation of communication equipment. At the same time, they also need to provide good protection and isolation performance to ensure the normal operation of communication equipment and the stability of data transmission.
(4) Control cabinets
Control cabinets are mainly used to install automation equipment and control systems, such as PLCs, inverters, touch screens, etc. They focus on dust prevention, anti-interference and compact structural design, and also provide appropriate isolation and protection to ensure the safety and reliability of control equipment.
2. Purchase Tips
1. Look at the size and capacity
Choose a cabinet with appropriate capacity according to the enterprise's usage scenario and the equipment to be installed. There are three common types of cabinets: small cabinets, medium cabinets and large cabinets.
(1) Small cabinet
Small cabinets usually refer to cabinets with a height between 4U and 12U. This cabinet is suitable for small offices, small data centers or personal use, and can accommodate fewer devices, such as network switches, routers, small servers, etc.
(2) Medium cabinet
Medium cabinets generally have larger capacity, with heights ranging from 18U to 42U. This cabinet is suitable for medium-sized enterprises or data centers and can accommodate more servers, network devices and storage devices.
(3) Large cabinet
Large cabinets usually refer to cabinets with a height of more than 42U, and some even reach 48U or higher. This cabinet is suitable for large data centers or environments where a large number of devices need to be installed, and can accommodate more servers, network devices, storage devices and power devices.
2. Look at ventilation and heat dissipation
Before choosing a cabinet, first choose a cabinet with good ventilation and heat dissipation design, metal material with good heat dissipation performance, good ventilation equipment and suitable equipment quantity and size according to the heat generation of the equipment, so as to ensure that the equipment can maintain a suitable working temperature inside the cabinet and does not affect the normal operation of the equipment.
3. Wiring maintenance
Before choosing a cabinet, you need to consider the wiring management function of the cabinet, including cable management slots, labels, wiring channels, etc., so as to effectively wire and maintain the equipment. You also need to consider the design of the cabinet's later cleaning, maintenance and replacement of parts.
III. Key knowledge
1. Cleaning skills
The cleaning frequency of the cabinet is generally once a quarter or half a year, which helps prevent the accumulation of dust and other debris. Before cleaning the cabinet, be sure to turn off the power of the relevant equipment to avoid touching the electrical components and causing accidental injury or damage. When cleaning dust, pay special attention to cleaning the equipment's heat dissipation holes, fans and filters to ensure that they remain unobstructed.
2. Maintenance skills
Develop a regular maintenance schedule, including cleaning, inspection, maintenance and other links, and establish a complete maintenance process and records, including maintenance time, maintenance content, maintenance personnel and other information, so as to conduct comprehensive and detailed inspection and maintenance of the cabinet.
3. Precautions
When using the cabinet, it is necessary to pay attention to the equipment carried not to exceed the load-bearing capacity of the cabinet, otherwise it will cause the cabinet to deform or collapse, causing harm to the safety of equipment and personnel. In addition, the cabinet needs to be placed in a dry, ventilated and safe place to avoid being affected by water, dust, vibration, etc., to ensure the normal operation of the equipment and the security of data.
4. Summary
When purchasing a cabinet, you need to consider many factors comprehensively, from the aspects of size capacity, ventilation and heat dissipation, wiring maintenance, and the presence or absence of microphones. After understanding these purchase knowledge, you can choose a suitable and high-quality cabinet according to the needs and budget of the enterprise.