Cabling Overview - Huawei 2288H V5 User Manual

2288H V5 Server
User Guide

4.5.1 Cabling Overview

Basic Guidelines
To ensure optimal heat dissipation, do not block the air exhaust vents of PSUs.
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Common Methods
The methods of routing cables inside a cabinet are described as follows:
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Issue 04 (2018-09-04)
NOTICE
Lay out and bind cables of different types (such as power and signal cables) separately.
Cables of the same type must be in the same direction. Route cables near each other in
crossover mode. Ensure that the distance between power cables and signal cables is
greater than or equal to 30 mm (1.18 in.) when you lay out the cables in parallel.
If you cannot identify cables according to 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
depending on 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.
Determine overhead cabling and underfloor cabling for power cables based on specific
conditions of the equipment room. Specifically, 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 data cables at the bottom of the cabinet so that the
connectors are difficult to reach.
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