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    ISO IEC 24764-2010 Information technology - Generic cabling systems for data centres《信息技术 一般数据中心用有线系统》.pdf

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    ISO IEC 24764-2010 Information technology - Generic cabling systems for data centres《信息技术 一般数据中心用有线系统》.pdf

    1、 ISO/IEC 24764 Edition 1.0 2010-04 INTERNATIONAL STANDARD Information technology Generic cabling systems for data centres ISO/IEC 24764:2010(E) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2010 ISO/IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publica

    2、tion may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or IECs member National Committee in the country of the requester. If you have any questions about ISO/IEC copyright or have a

    3、n enquiry about obtaining additional rights to this publication, please contact the address below or your local IEC member National Committee for further information. IEC Central Office 3, rue de Varemb CH-1211 Geneva 20 Switzerland Email: inmailiec.ch Web: www.iec.ch About the IEC The International

    4、 Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes International Standards for all electrical, electronic and related technologies. About IEC publications The technical content of IEC publications is kept under constant review by the IEC. Please make su

    5、re that you have the latest edition, a corrigenda or an amendment might have been published. Catalogue of IEC publications: www.iec.ch/searchpub The IEC on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical committee,). It also gives information on proje

    6、cts, withdrawn and replaced publications. IEC Just Published: www.iec.ch/online_news/justpub Stay up to date on all new IEC publications. Just Published details twice a month all new publications released. Available on-line and also by email. Electropedia: www.electropedia.org The worlds leading onl

    7、ine dictionary of electronic and electrical terms containing more than 20 000 terms and definitions in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical Vocabulary online. Customer Service Centre: www.iec.ch/webstore/custserv If you w

    8、ish to give us your feedback on this publication or need further assistance, please visit the Customer Service Centre FAQ or contact us: Email: csciec.ch Tel.: +41 22 919 02 11 Fax: +41 22 919 03 00 ISO/IEC 24764 Edition 1.0 2010-04 INTERNATIONAL STANDARD Information technology Generic cabling syste

    9、ms for data centres INTERNATIONAL ELECTROTECHNICAL COMMISSION R ICS 35.200 PRICE CODE ISBN 978-2-88910-836-7 2 24764 ISO/IEC:2010(E) CONTENTS FOREWORD.5 INTRODUCTION.6 1 Scope.8 2 Normative references .8 3 Terms and definitions and abbreviations.10 3.1 Terms and definitions 10 3.2 Abbreviations 11 4

    10、 Conformance11 5 Structure of the generic cabling system 12 5.1 General .12 5.2 Functional elements 12 5.3 General structure and hierarchy 13 5.4 Cabling subsystems 14 5.4.1 General .14 5.4.2 Network access cabling subsystem14 5.4.3 Main distribution cabling subsystem 14 5.4.4 Zone distribution cabl

    11、ing subsystem 15 5.4.5 Design objectives 15 5.5 Accommodation of functional elements15 5.6 Interfaces 16 5.6.1 Equipment interfaces and test interfaces .16 5.6.2 Channels and links 16 5.7 Dimensioning and configuring18 5.7.1 Distributors18 5.7.2 Redundancy 18 5.7.3 External network interface .19 5.7

    12、.4 Cables.20 5.7.5 Equipment cords20 5.7.6 Patch cords and jumpers .20 5.7.7 Equipment outlets20 5.7.8 LDP.20 5.7.9 Building entrance facilities.21 5.8 Earthing and equipotential bonding .21 6 Channel performance .21 6.1 General .21 6.2 Transmission performance 22 6.2.1 General .22 6.2.2 Balanced ca

    13、bling .22 6.2.3 Optical fibre cabling.22 7 Reference implementations 22 7.1 General .22 7.2 Balanced cabling.23 7.2.1 Assumptions23 7.2.2 Zone distribution cabling23 7.2.3 Main distribution cabling26 7.2.4 Network access cabling .28 24764 ISO/IEC:2010(E) 3 7.3 Optical fibre cabling 30 7.3.1 Assumpti

    14、ons30 7.3.2 Component choice.30 7.3.3 Optical fibre cabling channel lengths .30 8 Cable requirements 31 8.1 General .31 8.2 Balanced cables31 8.3 Optical fibre cables31 9 Connecting hardware requirements 31 9.1 General requirements31 9.1.1 Overview .31 9.1.2 Applicability.31 9.1.3 Location 31 9.1.4

    15、Design.31 9.1.5 Operating environment 31 9.1.6 Mounting .31 9.1.7 Installation practices32 9.1.8 Marking and colour coding.32 9.2 Connecting hardware for balanced cabling 32 9.2.1 General requirements32 9.2.2 Performance marking 32 9.2.3 Mechanical characteristics.32 9.3 Connecting hardware for opti

    16、cal fibre cabling 35 9.3.1 General requirements35 9.3.2 ENI requirements.35 9.3.3 EO requirements .35 9.3.4 Optical fibre assignments at the EO.35 9.3.5 Other connecting hardware36 10 Requirements for cords and jumpers 37 10.1 Jumpers 37 10.2 Balanced cords .37 10.3 Optical fibre cords .37 Annex A (

    17、normative) Link performance limits .38 A.1 General 38 A.2 Balanced cabling39 A.3 Optical fibre cabling40 Annex B (informative) Usage of high density connecting hardware within optical fibre cabling41 B.1 General 41 B.2 Structure of cabling subsystems .41 Bibliography44 Figure 1 Relationship between

    18、generic cabling standards 7 Figure 2 Structure of generic cabling within a data centre 13 Figure 3 Hierarchical structure of generic cabling within a data centre .14 Figure 4 Example of accommodation of functional elements 15 Figure 5 Test and equipment interfaces .17 4 24764 ISO/IEC:2010(E) Figure

    19、6 Connection of functional elements providing redundancy .19 Figure 7 Examples of external service cabling connections to the ENI .20 Figure 8 Example of a channel with 4 connections.21 Figure 9 Example of a system showing the location of cabling interfaces .22 Figure 10 Zone distribution cabling mo

    20、dels 24 Figure 11 Main distribution cabling models 27 Figure 12 Network access cabling models29 Figure 13 Pin grouping and pair assignments at the EO.34 Figure 14 Optical fibre assignments at the EO, front view of fixed connector36 Figure A.1 Link options 39 Figure B.1 Examples of high density conne

    21、cting hardware within main distribution cabling42 Figure B.2 Examples of high density connecting hardware at the LDP and EO within zone distribution cabling .43 Table 1 Zone distribution cabling length assumptions for balanced cabling .25 Table 2 Zone distribution channel length equations26 Table 3

    22、Main distribution cabling Length assumptions for balanced cabling 27 Table 4 Main distribution channel length equations 28 Table 5 Network access cabling channel equations30 Table 6 Connecting hardware of the type used at the ENI32 Table 7 Connecting hardware of the type used at the EO.33 24764 ISO/

    23、IEC:2010(E) 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ INFORMATION TECHNOLOGY GENERIC CABLING SYSTEMS FOR DATA CENTRES FOREWORD 1) ISO (International Organization for Standardization) and IEC (International Electrotechnical Commission) form the specialized system for worldwide standardization. Na

    24、tional bodies that are members of ISO or IEC participate in the development of International Standards. Their preparation is entrusted to technical committees; any ISO and IEC member body interested in the subject dealt with may participate in this preparatory work. International governmental and no

    25、n-governmental organizations liaising with ISO and IEC also participate in this preparation. 2) In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. Draft International Standards adopted by the joint technical committee are circulated to na

    26、tional bodies for voting. Publication as an International Standard requires approval by at least 75 % of the national bodies casting a vote. 3) The formal decisions or agreements of IEC and ISO on technical matters express, as nearly as possible, an international consensus of opinion on the relevant

    27、 subjects since each technical committee has representation from all interested IEC and ISO member bodies. 4) IEC, ISO and ISO/IEC publications have the form of recommendations for international use and are accepted by IEC and ISO member bodies in that sense. While all reasonable efforts are made to

    28、 ensure that the technical content of IEC, ISO and ISO/IEC publications is accurate, IEC or ISO cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 5) In order to promote international uniformity, IEC and ISO member bodies undertake to apply IE

    29、C, ISO and ISO/IEC publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any ISO/IEC publication and the corresponding national or regional publication should be clearly indicated in the latter. 6) ISO and IEC provide no marking

    30、 procedure to indicate their approval and cannot be rendered responsible for any equipment declared to be in conformity with an ISO/IEC Publication. 7) All users should ensure that they have the latest edition of this publication. 8) No liability shall attach to IEC or ISO or its directors, employee

    31、s, servants or agents including individual experts and members of their technical committees and IEC or ISO member bodies for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the

    32、 publication of, use of, or reliance upon, this ISO/IEC publication or any other IEC, ISO or ISO/IEC publications. 9) Attention is drawn to the normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 10) Att

    33、ention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights. International Standard ISO/IEC 24764 was prepared by subcommittee 25: Interconnect

    34、ion of information technology equipment, of ISO/IEC joint technical committee 1: Information technology. ISO/IEC 24764 is to be read in conjunction with International Standard ISO/IEC 11801:2002, its Amendment 1 (2008) and Amendment 2 (2010). This International Standard has been approved by vote of

    35、the member bodies, and the voting results may be obtained from the address given on the second title page. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. 6 24764 ISO/IEC:2010(E) INTRODUCTION Within premises, the importance of the information technology cabling i

    36、nfrastructure is similar to that of other fundamental building utilities such as heating, lighting and mains power. As with other utilities, interruptions to service can have serious impact. Poor quality of service due to lack of design foresight, use of inappropriate components, incorrect installat

    37、ion, poor administration or inadequate support can threaten an organisations effectiveness. Cabling within data centres comprises both application-specific and multipurpose networks that are mission-critical. Generic cabling designs in accordance with ISO/IEC 11801 have supported the development of

    38、high data rate applications based upon a defined cabling model. This International 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 IS

    39、O/IEC 11801. This International Standard provides: a) data centre users with an application independent generic cabling system capable of supporting a wide range of applications; b) data centre users with a flexible cabling scheme such that modifications are both easy and economical; c) data centre

    40、professionals (for example, data centre architects) with guidance allowing the accommodation of cabling before specific requirements are known; that is, in the initial planning either for construction or refurbishment; d) industry and applications standardization bodies with a cabling system which s

    41、upports current products and provides a basis for future product development. This International Standard specifies multi-vendor cabling, and is related to: the associated standard covering general requirements for generic cabling within premises (ISO/IEC 11801); standards for cabling components dev

    42、eloped by technical committees of the IEC; standards for the quality assurance, installation and administration of information technology cabling (ISO/IEC 14763-2 1 ) and testing of installed cabling (IEC 61935-1 and ISO/IEC 14763-3); applications developed by the technical committees of IEC, subcom

    43、mittees of ISO/IEC JTC 1 and study groups of ITU-T 2 . It is anticipated that the generic cabling system meeting the requirements of this International Standard will have a life expectancy of up to ten years. This International Standard has taken into account requirements specified in application st

    44、andards listed in Annex F of ISO/IEC 11801:2002 and Amendment 2 (2010). It refers to International Standards for components and test methods whenever appropriate International Standards are available. _ 1Until ISO/IEC 14763-2 is published, relevant information may be found in ISO/IEC 18010. 2Interna

    45、tional Telecommunication Union Telecommunications Standardization Sector. 24764 ISO/IEC:2010(E) 7 Figure 1 shows the schematic and contextual relationships between the standards produced by ISO/IEC JTC 1/SC 25 for information technology cabling, namely this and other generic cabling design standards

    46、 (ISO/IEC 11801), cabling installation standards (ISO/IEC 14763-2 3 ), testing of installed cabling (IEC 61935-1 and ISO/IEC 14763-3). ISO/IEC 11801: Information technology: Generic cabling for customer premises ISO/IEC 24764: Information technology: Generic cabling systems for Data Centres ISO/IEC

    47、18010: Information technology. Pathways and spaces for customer premises cabling ISO/IEC 14763-2: Information technology. Quality assurance, installation and administration IEC 61935-1: Generic cabling systems Specifications for the testing of balanced communication cabling IEC 60364-1: Electrical i

    48、nstallations of buildings: Fundamental principles, assessment of general characteristics, definitions ISO/IEC 14763-3: Information technology: Testing of optical fibre cabling ISO/IEC 11801: Information technology: Generic cabling for customer premises ISO/IEC 24764: Information technology: Generic

    49、cabling systems for Data Centres ISO/IEC 18010: Information technology. Pathways and spaces for customer premises cabling ISO/IEC 14763-2: Information technology. Quality assurance, installation and administration IEC 61935-1: Generic cabling systems Specifications for the testing of balanced communication cabling IEC 60364-1: Electrical installations of buildings: Fundamental principles, assessment of general characteristics, definitions ISO/IEC 1


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