Server Cabinet Cable Management Rack Data Center Cable Management Tool

The cables in the data center are in a messy state, which not only affects the appearance, but may also hinder the heat dissipation of the cabinet, thereby increasing the difficulty of operation and maintenance, and even causing signal attenuation due to excessive bending of the cables. As an operation and maintenance engineer who has worked in IT computer rooms for many years, I know how important a good cable management solution is to ensuring the stable operation of servers. Based on practical experience, let’s talk about matters related to server cabinet cable management.

Is the cable management rack necessary to install?

Many novices will feel that cabinet space is extremely precious, and installing a cable management rack is a waste of U space. However, according to my experience, unless there are only one or two devices placed in the cabinet, a cable management rack is absolutely indispensable. Like a cable overpass, it can guide cables from different servers to both sides in layers, preventing a spider web-like mess inside the cabinet. From the perspective of heat dissipation, neatly arranged cables will not block the air ducts at the front and rear of the server, and can effectively reduce the occurrence of local hot spots. From a maintenance perspective, when faulty equipment is replaced in the later stage, due to the support of the horizontal cable management frame, the cables will not collapse, and hands can be easily inserted for plugging and unplugging operations, which more than doubles the efficiency.

How to choose a suitable cable management rack

Cable management racks on the market are mainly divided into two categories, one with a cover and the other without a cover. I personally prefer the open metal cable management rack without a cover. Although it is slightly less beautiful, it has good permeability and is more conducive to heat dissipation. The cable labels can be seen at any time without the need to open and close the cover frequently. When purchasing, you also need to pay attention to its finger position design, specifically the size and shape of the threading hole. Nowadays, server network cables and optical fiber jumper interfaces have become increasingly fragile. If the finger position is too small and the cable bending radius is insufficient, it is easy to damage the internal optical fiber or cause the network cable signal to be unstable. It is recommended to choose a style with rounded fingers and an upward opening, so that the cable can hang down naturally without having to bend it hard.

How to install the cable management rack so that it is stable

Installing a cable management rack may seem simple, but if the location is wrong, it can cause trouble. We generally follow the principle of proximity: if the server is for front and rear maintenance, the cable management rack should be installed on the vertical mounting bars on both sides of the rear of the equipment; if the server is for front maintenance, the cable management rack should be installed on the inside of the back door of the cabinet. The fixing screws must be tightened, especially those cable management racks that carry dozens of network cables. If the screws become loose over time, the entire rack will fall down and the interface will be damaged. In addition, pay attention to keeping the cable management racks horizontally aligned with each other, so that the cables will run straight and beautiful, and there will be no stress caused by high and low misalignment.

What to do if there are too many network cables and the cable management rack cannot fit them

In high-density deployments, cable management racks can easily become full. Don't force it in at this time, because if the cables are squeezed too tightly, they will interfere with each other, and it is easy for the crystal head to fall off due to being squeezed. The solution I adopted is to implement hierarchical management: one layer of servers corresponds to a cable management rack. Don't even think about threading the cables of the servers on the upper and lower floors into the same cable management rack. If you are really in a crowded situation, you can consider using a high-density cable management rack, which is the type that takes up 2U or more space and has a denser arrangement of fingers. In addition, switching to thin-diameter Category 6 network cables can also free up a lot of space. This kind of cable is softer, has a small bending radius, and can pass through more cables on the cable management rack.

Can optical fiber and network cable share a cable management rack?

This is an extremely taboo situation in the data center. Although optical fiber has fast transmission speed, it is afraid of bending and squeezing. Network cables are generally thick and hard. If optical fiber and network cable are mixed and routed through the cable management rack, the weight of the network cable will directly press on the optical fiber, resulting in micro-bending, which will cause light attenuation and even fiber breakage. It is strongly recommended that It is recommended that optical fiber and network cables be routed separately. If the cabinet space is limited, at least the cable management rack should be arranged in an upper and lower layer. The upper layer is used for lightweight optical fiber routing, and the lower layer is used for copper cable routing. It is best to use a dedicated optical fiber cable management rack. Its slots are deeper and smoother, and can better protect the fiber jumper from being squeezed.

What are the tips for maintaining cable management racks?

First of all, the cable management rack has been installed properly and the lines have been arranged smoothly. However, once the equipment is put on and off the rack, the lines will become messy again, which has become a problem for many people. The key lies in the maintenance process: whenever you need to unplug a cable, do not pull it directly. Instead, you should first untie the tie from the cable management rack, and then slowly withdraw the cable along the cable management slot. After replacing the new equipment, return the cables to the cable management rack according to the original path and re-bundle them. The label should also be affixed to a more conspicuous position of the cable near the cable management rack, rather than behind the device interface. This way, the next time you perform maintenance work, you can see at a glance which switch the cable is connected to, without having to lean deep into the cabinet to find the label.

Looking at this, I don’t know what the most troublesome cable management problem is in your daily operation and maintenance. Is it too many and disorganized cables, or problems left over from history caused by equipment upgrades? You are welcome to share your experience in the comment area, and we will discuss and explore solutions together. If you think the article can be helpful to you, don’t forget to like it and share it with more colleagues!