【 Weak current College 】 Server overheating causes and solutions

In the ongoing expansion of high density data centre, if a 42U server rack loaded, will inevitably lead to its temperature is too hot, and rack top server often temperature Max. It rack installation how many servers is appropriate? should keep servers much interval?

The problem is that most data centers are facing, because most data center design and cannot cope with such a large number of small server cabinet release heat density. And lead to overheating may have three potential may result:
1. your cooling equipment not meeting the needs of the Cabinet;
2. your refrigeration capacity cannot meet the demand for cooling the room;
3. the above two reasons.

A solution to this problem has only two methods:
1. maintaining your air conditioning equipment or cold devices or appropriate increases its power.
2. If your cooling equipment sufficient to increase the device's interval or reduce server density, thereby reducing each cabinet heat density.
　　
First thing to do is find a way to let the air conditioning system to maximize their effectiveness. If the temperature is not obvious, either because your cooling power is insufficient, or because your equipment design and layout is not reasonable, or cooling equipment efficiency is not high enough. We must ensure that the cable does not obstruct the air conditioning system of underground air flow, should air conditioning system for proper maintenance and ensure its normal operation.
　　
Adjust the server space is not to say that each cabinets are 1U of space. This effect is not evident I'm afraid, unless the lower each cabinet load. Hot air rises, the Federation of air from the floor in the outflow is cool, but when it reaches the top of the Cabinet after the problem is high. In addition, some from the machine back-end "hot channel" hot air will inevitably reach the top of the Cabinet, and then re-enter the high-level servers. As you pointed out, often at the top of the servercabinet is the hottest. Therefore, in General, we from bottom Cabinet "lightening" bottom-up numbers in about 4, 5U location to place a blank plate, with a blank Board will block the space remaining.
　　
The "maintenance interval" means high load between the Cabinet you want to place two or more low load Cabinet. In a traditional data center, we generally recommended that a cabinet position 15 to 20 1U server. Of course this only empirically given recommendations, the real situation depends entirely on each server's energy requirements, as well as equipment for wind power transmission capacity. I suggest you'd better use only half of the Cabinet space to see if it needs to be improved significantly. In addition, you must ensure that the cable does not block the cooling exhaust device server.
　　
If this effect is not good, you need to use all of the above steps to use your air conditioning system for maximum effectiveness, moreover, may also need to increase the cooling capacity of the device. The market has a lot of new solutions, over time the number is still in its growth, but this is a costly and certain destructive tasks. Generally, the experts do not suggest that you only add one CRAC (computer air conditioning equipment). Because this practice very few can really solve the problem, but often can cause some problems. Local air cooling, single-row refrigeration, or since the cold Cabinet and so on these devices require some type of the new configuration, but if you choose, design or use a method correctly, and to acquire large air conditioning equipment compared to their cost is more efficient and more flexible, you can avoid the destruction of data center infrastructure. In addition, now some experts research and development of computer tools, without a significant investment of precisely identify the problems.