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FusionStorage 8.0.0 Block Storage Hardware Installation Guide 06

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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).
Checking Signal Cables

Checking Signal Cables

After installing all signal cables, check whether they work properly.


Signal cables of intra-cabinet components have been installed.


  1. Make sure that all the signal cables have passed the continuity test before they are routed.
  2. Check exteriors of signal cables.

    • Signal cables are intact and have no joints.
    • Cable connectors are clean and intact. Connectors made onsite comply with specifications and are properly connected.
    • Pigtail joints are clean and dustless. Spare optical connectors and ports are covered by protective caps.

  3. Check layout and binding of signal cables.

    • Signal cables are not routed on the heat-dissipating mesh of a cabinet.
    • Signal cables routed outside a cabinet must comply with following standards:
      • Cables are arranged in order, not crossed or bent.
      • Cable turns are smooth. Proper protection measures are adopted when cables are fixed to components with edges and corners.
      • Bending radius of a cable is not smaller than 4 cm.
      • When cables are routed in a trough, you may leave them unbound. However, the cables are not allowed to overflow the trough.
      • If not routed in a trough, signal cables are bound to a rectangular shape (round for single-core cables).
      • If routed on a cable tray, signal cables are fixed to the tray beams and bound to a rectangular shape (round for single-core cables).

        If the distance between the cable tray and cabinet top is larger than 0.8 m, a cable ladder is installed over the cabinet to relieve the strain caused by cable weight.

      • If signal cables are overlapped under the floor, the height of the cables does not exceed three-fourths of the net height of the space under the ESD floor.
    • Cables are bound moderately in even space, and cable ties are arranged in order with redundant parts cut off smoothly.

  4. Check layout of pigtails.

    • If pigtails are routed outside a cabinet, add protective tubes or troughs to protect them.
    • Protective tubes are inserted into a cabinet with a depth smaller than 10 cm and secured.
    • The cut of a protective tube is smooth. If it feels sharp, use PVC insulation tapes to wrap it.
    • Bending radius of an optical fiber is not smaller than 4 cm.
    • Cable turns of pigtails are not too tight or entangled with each other. Pairs of pigtails are sorted in order and bound with moderate force to avoid binding trace.
    • Pigtails can move freely in cable rings and cannot be bent at right angles.
    • No cable or article stacks on pigtails.
    • Redundant pigtails inside a cabinet are coiled into a fiber management tray or coiled up into a circle (diameter larger than 8 cm) and fixed properly.

  5. Check that signal cables are correctly routed inside a cabinet by referring to engineering design documents. Correct cable layout facilitates future maintenance and capacity expansion.
  6. Cable labels are correctly filled in, firmly attached, orderly arranged, and uniformly oriented.

    You are advised to attach a label to the position 2 cm from the connector. Labels can be made in a unified manner according to customer's requirements.

Updated: 2019-11-14

Document ID: EDOC1100081415

Views: 7770

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