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5288 V3 Server V100R003 User Guide 26

This document describes the features, appearance, and technical specifications of the 5288 V3 server, and how to install, power on, and power off the 5288 V3 server, connect cables, and install an operating system (OS) for it.
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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

Basic Rules

  • Lay out and bind cables of different types of cables (such as power and signal cables) separately. Ensure that the distance between power cables and signal cables is longer than or equal to 30 mm (1.18 in.) when you lay out the cables in parallel.
  • Lay out cables of the same type in the same direction. Cables near each other can be routed in crossover mode.
  • If you cannot identify cables using the cable labels, attach an engineering label to each cable.
  • Protect cables from burrs, heat sinks, and active accessories, which may damage the insulation layers of 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.
  • Ensure that cables are properly routed, supported, or fixed within the cable troughs inside the cabinet to prevent loose connections and cable damage.
  • Coil any surplus lengths of cables and bind them to proper positions inside the cabinet.
  • Route cables straightly and bind them neatly. The bending radius of a cable varies with the position where the cable is bent.
    • If you need to bend a cable in its middle, the bending radius must be at least twice the diameter of the cable.
    • 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 bending.
    • Do not use cable ties at a place where the cables are bent. Otherwise, the cables may break.

Common Cable Routing Methods

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

  • Determine overhead cabling and underfloor cabling for power cables based on specific conditions of the equipment room. For example, take into consideration the AC power distribution frame (PDF), surge protector, and terminal block.
  • Determine overhead cabling and underfloor cabling for service data cables based on specific conditions of the equipment room.
  • Place the connectors of all service Ethernet cables at the bottom of the cabinet in order so that the connectors are difficult to reach.

Cable Routing Rules

To ensure optimal heat dissipation, do not block the air exhaust vents of PSUs.

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Updated: 2018-11-26

Document ID: EDOC1000080031

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