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KunLun 9016 V100R001 User Guide 12

This document describes the appearance, specifications, parameters, and structure of the KunLun 9016, and how to install an OS, replace parts, and install, remove, configure, and troubleshoot the server.
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Laying Out Cables

Laying Out Cables

Cable Layout Rules

Do not block the air exhaust vents of power supply units (PSUs) when you lay out cables. Otherwise, heat dissipation of the server may be affected.

Basic Rules

  • Different types of cables such as power cables and signal cables must be laid out and bound separately. Cables of the same type are laid out in the same direction. Cables near each other can be routed in crossover mode. When you lay out cables in parallel, ensure that the distance between power cables and signal cables is longer than or equal to 30 mm (1.18 in.).
  • If you cannot identify cables according to the cable labels, attach an engineering label to each cable.
  • Cables must be protected from burrs, heat sinks, and active accessories, which may damage the insulation layers of the cables.
  • Ensure that the length of cable ties for binding cables is appropriate. Do not connect two or more cable ties together for binding cables. After binding cables properly, trim off the excess lengths of the cable ties and ensure that the cuts are neat and smooth.
  • Cables must be properly routed, supported, and fixed within cable troughs to prevent stress on the cables and wiring terminals, loose connections, and damage to the cable insulation layers.
  • Surplus cable lengths must be coiled and bound to a proper position inside the cabinet.
  • Cables must be routed straightly and bound neatly. The bending radius of a cable varies according to the cable position.
    • If you need to bend a cable in its middle, the bending radius must be at least twice the cable diameter.
    • If you need to bend a cable at the output terminal of a connector, the bending radius must be at least five times the cable diameter, and the cable must be bound before it is bent.
    • Do not use cable ties at a place where the cables are bent. Otherwise, the cables may break.

Common Methods

The methods of laying out cables inside a cabinet are described as follows:

  • Choose overhead or underfloor cabling for power cables based on equipment room conditions. For example, take into consideration the AC power distribution frame (PDF), surge protector, and terminal block.
  • Choose overhead or underfloor cabling for service data cables based on equipment room conditions. For example, take into consideration the cabling mode (overhead or underfloor cabling) of signal cables.
  • Arrange the connectors of all service data cables at the bottom of the cabinet so that they are difficult to reach.
  • Do not route multi-port cables in crossover mode so that ports can be easily identified and modules can be easily inserted and removed.
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Updated: 2019-05-20

Document ID: EDOC1000111827

Views: 98858

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