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Cabling standards

In the best of data centre ecosystems, a standards-based structured cabling system will provide functionality and scalability with the maximum available options for current and future equipment.
 For the full article from which the summary was taken please visit:        
http://structured-cabling.co.uk/support/white-paper

Cable Plant

Overhead delivery system cable layout:

  • The data hall has a system to support overhead delivery of data connections to the equipment cabinets.
  • Cabinet inter-connects must adhere to structured cable guidelines.
  • There is to be NO direct patching between cabinets: All patch cabling is to be contained within individual cabinets.
  • The data pathways maintain a minimum separation from electrical  power and lighting in accordance with BS7671 17th Edition wiring regulations.

Cabling standards

  • A convenient reference to TIA-942 A standards for Data Centres

Fibre standards

  • Fibre installation must use 50 micron OM2 Single Mode or OM3 / OM4 Multi Mode cable to ISO/IEC11801 standards.
  • All fibre installations must be labelled – aspirational.

Fibre connections

  • Fibre must not exceed required length by more than a meter.

Copper standards

  • Copper jumpers must be minimum CAT6 with booted RJ45 connectors.
  • All copper data cables must be labelled.
  • A selection of labelled Cat6 cables are available in Data Hall 3's Build Room.
  • UTP cabling must not exceed the required length by more than one foot within the cabinet.
  • The maximum length for UTP cables within a cabinet should not need to exceed 3m. See: http://blog.tpcwire.com/the-dos-donts-of-installing-ethernet-cable

Power cables

  • Use cables of minimum length – DH3 uses MCBs that are slower to trip; consequently, there is a greater chance of electrocution
  • It is assumed that systems will have redundant power supplies. These redundant power supplies must have their power cords plugged into separate power strips.
  • Colour co-ordinate cords to power strips: Supply A – black, Supply B – blue.
  • Use labelled power cords.
  • Power must be isolated from data cables as much as practicable
  • Power cords must be factory certified

 

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