How to Avoid Overheating in Your Network Server Rack

In 2025, China's data center and 5G industries are developing rapidly. According to Sina Technology, China's total number of data center racks has exceeded 6 million, and demand for servers supporting 5G base stations has increased by 40% year-on-year. A network server rack that overheats will slow down equipment, crash systems, or even damage hardware. This article talks about easy ways to avoid overheating, including heat dissipation system selection, layout optimization, and daily maintenance. It also introduces solutions from Xiamen APOLLO.

 

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1. Match Fan Power to Rack Size​

For an 18u server rack, choose axial fans with air volume of 80-120 CFM. Smaller fans can't push enough air, while larger ones waste energy. This ensures stable heat removal without extra power consumption.​

 

2. Use Liquid Cooling Modules for Harsh Environments​

For an outdoor server rack, install closed-loop liquid cooling modules. Outdoor temperatures often fluctuate sharply, and liquid cooling is more efficient than air cooling at resisting high temperatures or dust.​

 

3. Add Real-Time Temperature Sensors​

Install 2-3 temperature sensors inside the rack. Place one near the top (where heat accumulates) and one near high-power servers. They send alerts when temperatures exceed 35℃, preventing overheating in advance.

 

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1. Arrange servers in a vertical server rack from bottom to top by power. High-power servers (like 5G base station servers) generate more heat, so placing them at the bottom lets heat rise naturally without blocking airflow.​

 

2. Keep a 15-20cm gap between two network server racks. Too small a gap blocks side ventilation, making heat stay in the middle area and causing overheating.​

 

3. Avoid placing cables randomly inside the rack. Use cable management arms to route cables along the rack edges. Messy cables block air channels and reduce heat dissipation efficiency.

 

 

1. Maintain Stable Room Temperature​

Keep the server room temperature between 20-24℃. Use air conditioners that control temperature steadily. Baidu Tech Encyclopedia says: every 5℃ rise in room temperature makes server failure rate go up by 10%.​

 

2. Clean Filters Regularly​

Clean the dust filter of a computer rack cabinet once a month. Dust blocks the filter. This reduces the air that gets in. Use a soft brush or compressed air to remove dust. Don't use water-it may damage equipment.​

 

3. Check Heat Dissipation Channels Weekly​

Check if the rack's front and rear doors are closed tight. If doors are open, hot air flows back into the rack. Also check the rack top. Make sure ventilation holes aren't blocked by things like boxes.​

 

4. Prepare Backup Cooling Equipment​

Give the rack a backup fan or a portable air conditioner. If the main cooling system fails (like a power cut), the backup works. It keeps the rack cool for 2-4 hours. This is enough time to fix the main system.

 

 

Rack structure and appearance details affect how well heat is removed. For a computer rack cabinet, use 1.2mm thick cold-rolled steel for the frame. This material conducts heat well. It doesn't deform when it's hot, so the rack stays stable. Design louvered ventilation holes on the top and side panels. The blades are inclined at 45°. They stop dust from getting in and let hot air escape fast. Use a mesh panel for the front door. Its open area should be over 80%. This lets the most air into the rack, and you can still access servers easily. Add built-in cable management slots on the side of a vertical server rack. Route cables through these slots. This keeps cables away from air channels, so airflow isn't blocked. These small changes to structure and appearance don't just improve heat dissipation. They also make the rack more durable and easy to maintain.

 

 

Xiamen APOLLO provides high-quality server racks and custom services. They help solve overheating problems. Our computer rack cabinet uses double-layer heat insulation panels. They reduce the impact of outside temperatures. For an outdoor server rack, we add IP54 waterproof dust covers. We also put in efficient liquid cooling systems. This way, the rack works stably even when it's 45℃ outside.​

 

We have ISO 9001:2015 and CE certifications. We control quality strictly, from choosing materials to making products. Our 18u server rack has built-in intelligent temperature control. Fans adjust their speed automatically based on temperature. This saves 20% more energy than traditional racks. We offer three transport ways: sea, land and air. For large batches, we use sea transport to coastal cities. For inland areas, we use land transport. For urgent orders, we use air transport. We make sure goods are delivered within 7-15 days.​

 

Our engineering team has 15 years of experience. We can make custom racks for you. This includes vertical server racks and network server racks. We adjust size and cooling methods to meet your needs. Work with us, and you'll get stable, energy-saving server rack solutions. They'll stop overheating.​