Information technology - Generic cabling systems - Part 5: Data centre spaces

This standard specifies generic cabling within computer room spaces in data centre premises, or data centre spaces within other types of building. It covers balanced cabling and optical fibre cabling. This standard specifies directly or via reference to EN 50173-1 the: - structure and minimum configuration for generic cabling within data centre spaces; - interfaces at the external network interface (ENI) and equipment outlet (EO); - performance requirements for cabling links and channels; - implementation requirements and options; - performance requirements for cabling components; - conformance requirements and verification procedures. This standard has taken into account requirements specified in application standards listed in EN 50173-1. Safety and electromagnetic compatibility (EMC) requirements are outside the scope of this standard and are covered by other standards and regulations. However, information given in this standard can be of assistance in meeting these standards and regulations.

Informationstechnik - Anwendungsneutrale Kommunikationskabelanlagen - Teil 5: Rechenzentrumsbereiche

Diese Norm legt anwendungsneutrale Kommunikationskabelanlagen innerhalb von Rechnerräumen an Rechenzentrumsstandorten oder in Rechenzentrumsbereichen innerhalb anderer Gebäudearten fest. Sie behandelt symmetrische Kupferverkabelung und Lichtwellenleiterverkabelung. Diese Norm legt entweder direkt oder mittels Verweisung auf EN 50173 1 Folgendes fest: – Struktur und Mindestkonfiguration für anwendungsneutrale Kommunikationskabelanlagen in Rechen-zentrumsbereichen; – Schnittstellen an der Schnittstelle zum externen Netz (ENS) und dem Geräteanschluss (GA); – Anforderungen an das Leistungsvermögen von Verkabelungs- und Übertragungsstrecken; – Anforderungen an und Optionen für Ausführungen; – Anforderungen an das Leistungsvermögen von Verkabelungskomponenten; – Konformitätsanforderungen und Verifizierungsverfahren. In dieser Norm wurden Anforderungen berücksichtigt, die in den in EN 50173 1 aufgeführten Anwendungs-normen festgelegt werden. Anforderungen an Sicherheit und elektromagnetische Verträglichkeit (EMV) gehören nicht zum Anwendungs-bereich dieser Norm und werden von anderen Normen und Vorschriften behandelt. Jedoch können die in dieser Norm bereitgestellten Informationen bei der Einhaltung dieser Normen und Vorschriften hilfreich sein.

Technologies de l'information - Systèmes de câblage générique - Partie 5: Espaces de centres de traitement de données

Informacijska tehnologija - Univerzalni sistemi polaganja kablov - 5. del: Podatkovna središča

Ta standard določa univerzalne kable, napeljane v računalniških prostorih podatkovnih središč ali podatkovnih središčih znotraj drugih vrst stavb.
Zajema simetrične kable in kable z optičnimi vlakni.
Ta standard neposredno ali s sklicem na standard EN 50173-1 določa:
– strukturo in minimalno konfiguracijo univerzalnih kablov v podatkovnih središčih;
– vmesnike na zunanjem omrežnem vmesniku (ENI) in vtičnici za opremo (EO);
– zahteve za zmogljivost kabelskih povezav in kanalov;
– zahteve in možnosti za izvedbo;
– zahteve za zmogljivost kabelskih komponent;
– zahteve za skladnost in postopke preverjanja.
Ta standard upošteva zahteve, določene v standardih za uporabo, navedenih v standardu EN 50173-1.
Varnostne zahteve in zahteve za elektromagnetno združljivost (EMC) ne spadajo na področje uporabe tega standarda ter so obravnavane v drugih standardih in predpisih. Vendar so lahko informacije iz tega standarda v pomoč pri izpolnjevanju teh standardov in predpisov.

General Information

Status
Published
Publication Date
14-Jun-2018
Current Stage
6060 - Document made available
Due Date
26-Feb-2019

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SLOVENSKI STANDARD
SIST EN 50173-5:2018
01-oktober-2018
1DGRPHãþD
SIST EN 50173-5:2008
SIST EN 50173-5:2008/A1:2011
SIST EN 50173-5:2008/A1:2011/AC:2011
SIST EN 50173-5:2008/A2:2013
,QIRUPDFLMVNDWHKQRORJLMD8QLYHU]DOQLVLVWHPLSRODJDQMDNDEORYGHO
3RGDWNRYQDVUHGLãþD
Information technology - Generic cabling systems - Part 5: Data centre spaces
Informationstechnik - Anwendungsneutrale Kommunikationskabelanlagen - Teil 5:
Rechenzentrumsbereiche

Technologies de l'information - Systèmes de câblage générique - Partie 5: Espaces de

centres de traitement de données
Ta slovenski standard je istoveten z: EN 50173-5:2018
ICS:
33.040.50 Vodi, zveze in tokokrogi Lines, connections and
circuits
35.110 Omreževanje Networking
SIST EN 50173-5:2018 en,fr

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 50173-5:2018
---------------------- Page: 2 ----------------------
SIST EN 50173-5:2018
EUROPEAN STANDARD EN 50173-5
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2018
ICS 33.040.50 Supersedes EN 50173-5:2007
English Version
Information technology - Generic cabling systems - Part 5: Data
centre spaces

Technologies de l'information - Systèmes de câblage Informationstechnik - Anwendungsneutrale

générique - Partie 5: Espaces de centres de traitement de Kommunikationskabelanlagen - Teil 5:

données Rechenzentrumsbereiche

This European Standard was approved by CENELEC on 2018-03-19. CENELEC members are bound to comply with the CEN/CENELEC

Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC

Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation

under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,

Switzerland, Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 50173-5:2018 E
---------------------- Page: 3 ----------------------
SIST EN 50173-5:2018
EN 50173-5:2018 (E)
Contents Page

European foreword ........................................................................................................................................... 5

Introduction ....................................................................................................................................................... 6

1 Scope and conformance ..................................................................................................................... 9

1.1 Scope .................................................................................................................................................... 9

1.2 Conformance ........................................................................................................................................ 9

2 Normative references ........................................................................................................................ 10

3 Terms, definitions and abbreviations .............................................................................................. 10

3.1 Terms and definitions ....................................................................................................................... 10

3.2 Abbreviations ..................................................................................................................................... 12

4 Structure of the generic cabling system in computer room spaces of data centres ................. 12

4.1 General................................................................................................................................................ 12

4.2 Functional elements .......................................................................................................................... 12

4.3 Structure and hierarchy .................................................................................................................... 13

4.4 Cabling subsystems .......................................................................................................................... 14

4.4.1 Data centre cabling subsystems ...................................................................................................... 14

4.4.2 Associated cabling subsystems ...................................................................................................... 15

4.5 Design objectives .............................................................................................................................. 16

4.5.1 General................................................................................................................................................ 16

4.5.2 Zone distribution cabling .................................................................................................................. 16

4.5.3 Intermediate distribution cabling ..................................................................................................... 16

4.5.4 Main distribution cabling .................................................................................................................. 16

4.5.5 Network access cabling .................................................................................................................... 16

4.5.6 Tie cabling .......................................................................................................................................... 17

4.6 Accommodation of functional elements ......................................................................................... 18

4.6.1 General................................................................................................................................................ 18

4.6.2 Equipment Outlets ............................................................................................................................. 18

4.6.3 Distributors ........................................................................................................................................ 18

4.6.4 Cables ................................................................................................................................................. 18

4.6.5 Local Distribution Points .................................................................................................................. 18

4.6.6 External Network Interface ............................................................................................................... 18

4.7 Interfaces ............................................................................................................................................ 18

4.7.1 Equipment interfaces and test interfaces ....................................................................................... 18

4.7.2 Channels and links ............................................................................................................................ 20

4.8 Dimensioning and configuration ..................................................................................................... 20

4.8.1 Distributors ........................................................................................................................................ 20

4.8.2 Cables ................................................................................................................................................. 20

4.8.3 Connecting hardware ........................................................................................................................ 20

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SIST EN 50173-5:2018
EN 50173-5:2018 (E)

4.8.4 Cords................................................................................................................................................... 20

4.8.5 Equipment Outlets and Local Distribution Points ......................................................................... 21

4.8.6 External Network Interface ............................................................................................................... 21

5 Channel performance in computer room spaces of data centres ................................................ 22

5.1 General................................................................................................................................................ 22

5.2 Environmental performance ............................................................................................................. 23

5.3 Transmission performance............................................................................................................... 23

5.3.1 General................................................................................................................................................ 23

5.3.2 Balanced cabling ............................................................................................................................... 23

5.3.3 Optical fibre cabling .......................................................................................................................... 24

6 Reference implementations in computer room spaces of data centres ...................................... 24

6.1 General................................................................................................................................................ 24

6.2 Balanced cabling ............................................................................................................................... 24

6.2.1 General................................................................................................................................................ 24

6.2.2 Zone distribution cabling .................................................................................................................. 24

6.2.3 Intermediate distribution cabling ..................................................................................................... 29

6.2.4 Main distribution cabling .................................................................................................................. 30

6.2.5 Network access cabling .................................................................................................................... 32

6.3 Optical fibre cabling .......................................................................................................................... 34

6.3.1 General................................................................................................................................................ 34

6.3.2 Component choice ............................................................................................................................ 35

6.3.3 Dimensions ........................................................................................................................................ 35

7 Cable requirements in computer room spaces of data centres ................................................... 35

7.1 General................................................................................................................................................ 35

7.2 Balanced cables of Category 5, 6, 6A, 7, 7A, 8.1 and 8.2............................................................... 35

7.3 Optical fibre cables of Category OM3, OM4, OM5, OS1a and OS2 ............................................... 35

8 Connecting hardware requirements in computer room spaces of data centres ........................ 35

8.1 General requirements ........................................................................................................................ 35

8.2 Balanced connecting hardware ....................................................................................................... 36

8.2.1 General requirements ........................................................................................................................ 36

8.2.2 Electrical, mechanical and environmental performance ............................................................... 36

8.3 Optical fibre connecting hardware .................................................................................................. 36

8.3.1 General requirements ........................................................................................................................ 36

8.3.2 Optical, mechanical and environmental performance ................................................................... 37

9 Requirements for cords and jumpers in computer room spaces of data centres ...................... 37

9.1 Jumpers .............................................................................................................................................. 37

9.2 Balanced cords of Category 5, 6, 6A, 7, 7A, 8.1 and 8.2 ................................................................ 37

9.2.1 General................................................................................................................................................ 37

9.2.2 Additional requirements for certain cords ...................................................................................... 37

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SIST EN 50173-5:2018
EN 50173-5:2018 (E)

9.3 Optical fibre cords of Category OM3, OM4, OM5, OS1a and OS2 ................................................ 37

Annex A (normative) Link performance limits............................................................................................ 38

A.1 General................................................................................................................................................ 38

A.2 Balanced cabling ............................................................................................................................... 39

A.3 Optical fibre cabling .......................................................................................................................... 39

Annex B (normative) Usage of high density connecting hardware within optical fibre cabling ........... 40

B.1 General................................................................................................................................................ 40

B.2 Examples of cabling configurations using high density connecting hardware ......................... 40

B.3 Channel performance ........................................................................................................................ 40

Annex C (normative) Combination of balanced cabling links .................................................................. 43

C.1 General................................................................................................................................................ 43

C.2 Requirements ..................................................................................................................................... 43

Bibliography .................................................................................................................................................... 44

Figures

Figure 1 — Schematic relationship between the EN 50173 series and other relevant standards ........... 7

Figure 2 — Structure of generic cabling ...................................................................................................... 13

Figure 3 — Hierarchical topology of generic cabling ................................................................................. 14

Figure 4 — Examples of cabling implementation to improve reliability ................................................... 17

Figure 5 — Example of accommodation of functional elements............................................................... 18

Figure 6 — Test and equipment interfaces .................................................................................................. 19

Figure 7 — The External Network Interface ................................................................................................. 21

Figure 8 — Example of a channel ................................................................................................................. 22

Figure 9 — Example of a system showing the location of cabling interfaces ......................................... 23

Figure 10 — Zone distribution cabling models ........................................................................................... 27

Figure 11 — Intermediate distribution cabling model ................................................................................ 29

Figure 12 — Main distribution cabling model.............................................................................................. 31

Figure 13 — Network access cabling model ............................................................................................... 33

Figure A.1 — Link options ............................................................................................................................. 38

Figure B.1 — Examples of high density connecting hardware within main distribution cabling .......... 41

Figure B.2 — Examples of high density connecting hardware at the LDP and EO within zone

distribution cabling ........................................................................................................................................ 42

Figure C.1 — Examples of combination of different links ......................................................................... 43

Tables

Table 1 — Contextual relationship between EN 50173 series and other standards relevant for

information technology cabling systems ...................................................................................................... 7

Table 2 — Zone distribution channel equations ......................................................................................... 28

Table 3 — Intermediate distribution channel equations ............................................................................ 30

Table 4 — Main distribution channel equations .......................................................................................... 32

Table 5 — Network access cabling channel equations .............................................................................. 34

---------------------- Page: 6 ----------------------
SIST EN 50173-5:2018
EN 50173-5:2018 (E)
European foreword

This document (EN 50173-5:2018) has been prepared by the Technical Committee CENELEC TC 215

"Electrotechnical aspects of telecommunication equipment".
The following dates are fixed:
• latest date by which this document has (dop) 2019-03-19
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2021-03-19
standards conflicting with this document
have to be withdrawn
This document supersedes EN 50173-5:2007 + A1:2010 + AC:2011 + A2:2012.

The European Standards EN 50173:1995 and EN 50173-1:2002 have been developed to enable the

application-independent cabling to support ICT applications in office premises. Their basic principles,

however, are applicable to other types of applications and in other types of premises.

TC 215 has decided to establish relevant European Standards which address the specific requirements of

these premises. In order to point out the commonalities of these cabling design standards, these EN are

published as individual parts of the series EN 50173, thus also acknowledging that standards users recognize

the designation “EN 50173” as a synonym for generic cabling design.

At the time of publication of this European Standard, series EN 50173 comprises the following standards:

EN 50173-1 Information technology — Generic cabling systems — Part 1: General requirements

EN 50173-2 Information technology — Generic cabling systems — Part 2: Office spaces

EN 50173-3 Information technology — Generic cabling systems — Part 3: Industrial spaces

EN 50173-4 Information technology — Generic cabling systems — Part 4: Homes

EN 50173-5 Information technology — Generic cabling systems — Part 5: Data centre spaces

EN 50173-6 Information technology — Generic cabling systems — Part 6: Distributed building

services
This edition of EN 50173-5:

a) introduces new components 8.1 and 8.2 for balanced cabling to support new channel Classes I and II as

well as optical fibre cabling (OM5) as defined in EN 50173-1:2018;

b) clarifies that the cabling defined in this standard applies to computer rooms in data centres;

c) aligns the document structure across the EN 50173 series and updates the document both technically

and editorially.
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SIST EN 50173-5:2018
EN 50173-5:2018 (E)
Introduction

The importance of cabling infrastructure is similar to that of other fundamental utilities such as water and

energy supply and interruptions to the services provided over that infrastructure can have a serious impact. A

lack of design foresight, the use of inappropriate components, incorrect installation, poor administration or

inadequate support can threaten quality of service and have commercial consequences for all types of users.

This standard specifies generic cabling within computer room spaces in data centre premises, or data centre

spaces within other types of building.
Additionally those premises can include:
— office spaces for which generic cabling is specified in EN 50173-2;
— industrial spaces for which generic cabling is specified in EN 50173-3.

Generic cabling for distributed building services in data centre spaces is specified in EN 50173-6 which

addresses all of the above premises and spaces within them.

Figure 1 and Table 1 show the schematic and contextual relationships between the standards produced by

TC 215 for information technology cabling, namely:
1) this and other parts of the EN 50173 series;
2) installation (EN 50174 series);
3) bonding (EN 50310).
---------------------- Page: 8 ----------------------
SIST EN 50173-5:2018
EN 50173-5:2018 (E)

Figure 1 — Schematic relationship between the EN 50173 series and other relevant standards

Table 1 — Contextual relationship between EN 50173 series and other standards relevant for

information technology cabling systems
Building design Generic cabling Specification Installation Operation phase
phase design phase phase phase
EN 50173-2 EN 50174-1
EN 50173-3
Planning phase
EN 50173-4
EN 50174-2
EN 50173-5
EN 50310 EN 50174-3 EN 50174-1
EN 50173-6
EN 50174-2
EN 50310
EN 50174-3
(these ENs
EN 50310
reference general
requirements of
EN 50173-1)

In addition, a number of Technical Reports have been developed to support or extend the application of these

standards, including:
— CLC/TR 50173-99-1, Cabling guidelines in support of 10 GBASE-T;
---------------------- Page: 9 ----------------------
SIST EN 50173-5:2018
EN 50173-5:2018 (E)

— CLC/TR 50173-99-2, Information technology — Implementation of BCT applications using cabling in

accordance with EN 50173-4;

— CLC/TR 50173-99-3, Information technology — Generic cabling systems — Part 99-3: Home cabling

infrastructures up to 50 m in length to support simultaneous and non simultaneous provision of

applications.

In addition, a number of cabling design standards have been developed using components of EN 50173-1

(e.g. EN 50098 series and EN 50700).
The generic cabling specified by this standard provides users with:

— an application independent system capable of supporting a wide range of applications in a range of

installation and operating environments;
— a flexible scheme such that modifications are both easy and economical;
— a multi-vendor supply chain within an open market for cabling components.
In addition this standard provides:

a) relevant industry professionals with guidance allowing the accommodation of cabling before specific

requirements are known; i.e. in the initial planning either for construction or refurbishment and for further

deployment as the requirements of areas are defined;

b) industry and standardization bodies with a cabling system which supports current products and provides

a basis for future product development and applications standardization.

Applications addressed in this standard include those developed by the Technical Committees of IEC

(including the subcommittees of ISO/IEC JTC 1) and study groups of ITU-T within the densely connected

environment of data centre spaces.

Physical layer requirements for the applications listed in EN 50173-1:2018, Annex F, have been analysed to

determine their compatibility with the cabling performance specified in this standard and, together with

statistics concerning premises geography from different countries and the models described in Clause 4,

have been used to develop the requirements for cabling components and to stipulate their arrangement into

cabling systems.
As a result, this standard:

a) specifies a structure for generic cabling supporting a wide variety of applications including, but not

restricted to, those in EN 50173-1:2018, Annex F;

b) adopts balanced cabling channel and link Classes EA, F, FA, I and II specified in EN 50173-1;

c) adopts optical fibre cabling channel and link requirements specified in EN 50173-1;

d) adopts component requirements, specified in EN 50173-1, and specifies cabling implementations that

ensures performance of links and of channels meeting the requirements of a specified group (e.g. Class)

of applications.

Life expectancy of generic cabling systems can vary depending on environmental conditions, supported

applications, aging of materials used in cables, and other factors such as access to pathways (campus

pathways are more difficult to access than building pathways).

With appropriate choice of components, generic cabling systems meeting the requirements of this standard

are expected to have a life expectancy of at least ten years.

This document should be read in conjunction with EN 50600-2-4 which describes other aspects of

telecommunications cabling in the computer room and other spaces of data centres.

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SIST EN 50173-5:2018
EN 50173-5:2018 (E)
1 Scope and conformance
1.1 Scope

This standard specifies generic cabling within computer room spaces in data centre premises, or data centre

spaces within other types of building.
It covers balanced cabling and optical fibre cabling.
This standard specifies directly or via reference to EN 50173-1 the:

— structure and minimum configuration for generic cabling within data centre spaces;

— interfaces at the external network interface (ENI) and equipment outlet (EO);
— performance requirements for cabling links and channels;
— implementation requirements and options;
— performance requirements for cabling components;
— conformance requirements and verification procedures.

This standard has taken into account requirements specified in application standards listed in EN 50173-1.

Safety and electromagnetic compatibility (EMC) requirements are outside the scope of this standard and are

covered by other standards and regulations. However, information given in this standard can be of assistance

in meeting these standards and regulations.
1.2 Conformance
For a cabling installation to conform to this standard the following applies.

a) The configuration and structure shall conform to the requirements of Clause 4.

b) Channels shall meet the requirements of Clause 5.
This shall be achieved by one of the following:

1) a channel design and implementation ensuring that the prescribed channel performance of Clause 5

is met;

2) attachment of appropriate components to a permanent link or LDP link design meeting the

prescribed performance class of Annex A. Channel performance shall be ensured where a channel

is created by adding more than one cord to either end of a link meeting the requirements of

Annex A;

3) for E environments, using the reference implementations of Clause 6 and compatible cabling

components conforming to the requirements of Clauses 7, 8 and 9 based upon a statistical

approach of performance modelling.

c) The interfaces to the cabling at the EO and ENI shall conform to the requirements of Clause 8 with

respect to mating interfaces and performance.

d) Connecting hardware at other places in the cabling structure shall meet the performance requirements

specified in Clause 8 independent of the interface used.
e) The requirements of EN 50174
...

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