Changzhou Qiaobang Storage Equipment Co.,Ltd

Changzhou Qiaobang Storage Equipment Co.,Ltd

latest in data center low voltage cabling distribution

Interconnecting the various IT resources in a data center requires large amounts of cabling (whether fiber, copper or a combination of the two). Perhaps you’ve seen the mess of wires and cables that can quickly build behind your desk, especially if you have a number of connected gadgets; the situation in the data center can be much worse if not carefully controlled. Finding a good place for cabling that permits good airflow, accessibility for maintenance and expansion, and safety (for personnel and equipment) is critical.wire mesh cable tray helps you a lot in this situation .

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Moving Away From the Under-Floor Plenum

Although raised floors remain common in data centers, they are generally considered a less than optimal solution with respect to energy efficiency. One of a raised floor’s main benefits is it creates a space under the equipment that can contain the multitude of cables (power and data) required to feed servers and other IT equipment. Even assuming a raised floor isn’t an energy-efficiency hindrance in itself, using the under-floor plenum for cabling can hamper airflow, creating hot spots that necessitate running the cooling system at a higher capacity. Furthermore, the cable holes in tiles (or, worse, complete removal of tiles) results in air leakage, another drag on efficiency. From a cabling perspective, running cables under the floor makes them much less accessible at maintenance time; lifting floor tiles on a raised floor must be done carefully, and finding a particular cable can still be difficult or impossible, particularly if cables are not well marked or if many “dead” cables are left under the floor (another cause of clutter).

As a good chunk of the data center industry has moved away from raised floors, instead implementing hot aisle/cold aisle techniques, the matter of cable distribution has also come into focus. Obviously, if cabling cannot be placed under the floor, it must be placed above it.

Benefits of Overhead Cabling

From an energy efficiency standpoint, overhead cabling eliminates one major source of airflow obstruction, helping reduce the likelihood of hot spots. According to an APC by Schneider Electric white paper (“How Overhead Cabling Saves Energy in Data Centers”), “The decision to place network data and power cabling into overhead wire mesh cable trays can lower cooling fan and pump power consumption by 24%.”

But another major benefit is accessibility. Instead of being under the floor—and possibly all but inaccessible owing to the arrangement of equipment above the floor or the hassles of lifting floor tiles—overhead cabling can be entirely accessible, easing the process of maintaining existing cables or adding new ones. A article (“Using overhead cables to tidy your data center: Ask the Expert podcast”) cites Robert McFarlane, a principal at consulting and technology design firm Shen Milsom and Wilke, as identifying another tremendous advantage: “avoiding the need to comply with article 645 of the National Electrical Code (NEC) and the dangerous Emergency Power Off (EPO) button that article requires.” The EPO button is a perennial source of headaches for data center operators: it has been mistaken for a variety of purposes, including a door opener, to the catastrophic detriment of data center uptime. Of course, McFarlane is referring to the use of overhead cabling for power cables in this context. But it is worth noting that the overhead cabling concept can also apply to power cables, delivering the same airflow and maintenance benefits on the facilities side as it does on the IT side.

Thus, if implemented properly, overhead cabling can improve both data center efficiency and uptime—a dual win. But the key is doing so in a way that avoids some common pitfalls.

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