EN 50173-5:2007
(Main)Information technology - Generic cabling systems - Part 5: Data centres
Information technology - Generic cabling systems - Part 5: Data centres
1.1 Scope This European Standard specifies generic cabling that supports a wide range of communications services for use within a data centre. It covers balanced cabling and optical fibre cabling. This European Standard is based upon and references the requirements of EN 50173-1. This European Standard contains additional requirements that are appropriate to data centres in which the distance over which communications services have to be distributed is the maximum defined for backbone cabling implementations within EN 50173 1. The principles of this European Standard may also be applied to installations that do not fall within this range. In addition to the requirements of EN 50173-1, this European Standard specifies: a) a modified structure and configuration for generic cabling within data centres used to support existing and emerging applications; b) implementation options to reflect the quantity of connections required in data centre infrastructures; c) requirements that reflect the range of operating environments within data centres. Safety (electrical safety and protection, fire, optical power etc.) and electromagnetic compatibility (EMC) requirements are outside the scope of this European Standard and are covered by other standards and regulations. However, information given in this European Standard may be of assistance in meeting these standards and regulations.
Informationstechnik - Anwendungsneutrale Kommunikationskabelanlagen - Teil 5: Rechenzentren
Technologies de l'information - Systèmes de câblage générique - Partie 5: Centres de données
Informacijska tehnologija - Univerzalni sistemi pokabljenja - 5. del: Podatkovna središča
Ta evropski standard določa univerzalno polaganje kablov, ki podpira širok razpon komunikacijskih storitev za uporabo v podatkovnih centrih. Zajema uravnoteženo polaganje kablov in polaganje optičnih kablov. Ta evropski standard temelji na zahtevah EN 50173-1 in se sklicuje nanje. Ta evropski standard vsebuje dodatne zahteve, ki so primerne za podatkovne centre, kjer je največja razdalja, na kateri je treba distribuirati komunikacijske storitve, opredeljena z izvedbo hrbteničnega polaganja kablov v EN 50173-1. Načela tega evropskega standarda prav tako lahko veljajo za inštalacije, ki niso v tem obsegu.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2008
,QIRUPDFLMVNDWHKQRORJLMD8QLYHU]DOQLVLVWHPLSRNDEOMHQMDGHO 3RGDWNRYQD
VUHGLãþD
Information technology - Generic cabling systems - Part 5: Data centres
Informationstechnik - Anwendungsneutrale Kommunikationskabelanlagen - Teil 5:
Rechenzentren
Technologies de l'information - Systemes de câblage générique - Partie 5: Centres de
données
Ta slovenski standard je istoveten z: EN 50173-5:2007
ICS:
33.040.50 Vodi, zveze in tokokrogi Lines, connections and
circuits
35.110 Omreževanje Networking
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 50173-5
NORME EUROPÉENNE
May 2007
EUROPÄISCHE NORM
ICS 33.040.50
English version
Information technology -
Generic cabling systems -
Part 5: Data centres
Technologies de l'information - Informationstechnik -
Systèmes de câblage générique - Anwendungsneutrale
Partie 5: Centres de données Kommunikationskabelanlagen -
Teil 5: Rechenzentren
This European Standard was approved by CENELEC on 2007-04-11. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia,
Slovenia, Spain, Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50173-5:2007 E
Foreword
This European Standard was prepared by the Technical Committee CENELEC TC 215, Electrotechnical
aspects of telecommunication equipment.
The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50173-5 on
2007-04-11.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2008-05-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2010-05-01
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 premises
EN 50173-3 Information technology – Generic cabling systems – Part 3: Industrial premises
EN 50173-4 Information technology – Generic cabling systems – Part 4: Homes
EN 50173-5 Information technology – Generic cabling systems – Part 5: Data centres
- 3 - EN 50173-5:2007
Contents
Introduction . 5
1 Scope and conformance . 8
1.1 Scope . 8
1.2 Conformance . 8
2 Normative references . 9
3 Definitions and abbreviations . 9
3.1 Definitions. 9
3.2 Abbreviations . 10
4 Structure of the generic cabling system in data centres . 11
4.1 General. 11
4.2 Functional elements. 11
4.3 General structure and hierarchy. 11
4.4 Cabling subsystems. 12
4.5 Accommodation of functional elements.13
4.6 Interfaces. 14
4.7 Dimensioning and configuring. 14
5 Channel performance in data centres . 17
5.1 General. 17
5.2 Environmental performance . 18
5.3 Transmission performance. 19
6 Reference implementations in data centres. 20
6.1 General. 20
6.2 Balanced cabling. 20
6.3 Optical fibre cabling . 26
7 Cable requirements in data centres.27
7.1 General. 27
7.2 Balanced cables . 27
7.3 Optical fibre cables . 28
8 Connecting hardware requirements in data centres . 28
8.1 General requirements . 28
8.2 Connecting hardware for balanced cabling . 28
8.3 Connecting hardware for optical fibre cabling.29
9 Requirements for cords and jumpers in data centres. 29
9.1 Jumpers. 29
9.2 Balanced cords . 29
9.3 Optical fibre cords. 29
Annex A (normative) Link performance limits . 30
Annex B (normative) Channel insertion loss models for high bit rate, multimode, optical fibre
applications . 31
Bibliography . 32
Figures
Figure 1 - Schematic relationship between the EN 50173 series and other relevant standards .6
Figure 2 - Structure of generic cabling.12
Figure 3 - Hierarchical structure of generic cabling.12
Figure 4 - Example of accommodation of functional elements .14
Figure 5 - Test and equipment interfaces .15
Figure 6 - Connection of functional elements providing redundancy .16
Figure 7 - The External Network Interface .16
Figure 8 - Example of a channel.18
Figure 9 - Example of a system showing the location of cabling interfaces.18
Figure 10 - Zone distribution cabling models .22
Figure 11 – Main distribution cabling model.23
Figure 12 - Network access cabling model .25
Figure A.1 - Link options.30
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 .21
Table 3 - Main distribution channel equations.24
Table 4 - Network access cabling channel equations .26
Table 5 - Optical fibre channel parameters .27
Table B.1 – Maximum channel attenuation allocated to connecting hardware .31
Table B.2 - Maximum connecting hardware attenuation .32
- 5 - EN 50173-5:2007
Introduction
The importance of the information technology cabling infrastructure is similar to that of other utilities such as
heating, lighting and electricity supplies. As with other utilities, interruptions to service can have serious
impact. Poor quality of service due to lack of planning, use of inappropriate components, incorrect installation,
poor administration or inadequate support can threaten an organisation's effectiveness.
Cabling within data centres comprises both application-specific and multipurpose networks that are mission-
critical to the enterprise. Generic cabling designs in accordance with the EN 50173 series have supported the
development of high data rate applications based upon a defined cabling model. This European standard
recognizes the benefit of generic cabling to provision multiple services and to connect large quantities of
equipment within the limited space of data centre premises, and is to be used in conjunction with
EN 50173-1.
This European Standard, EN 50173-5, provides:
a) users with an application independent generic cabling system and an open market for cabling
components;
b) requirements for infrastructures that support critical applications within data centres;
c) a flexible cabling scheme such that modifications are both easy and economical;
d) a scaleable structure to support expansion with minimum operational disruption;
e) building professionals (for example, architects) with guidance a
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