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    TIA-942-2005 Telecommunications Infrastructure Standard for Data Centers《数据中心的电信基础设施标准》.pdf

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    TIA-942-2005 Telecommunications Infrastructure Standard for Data Centers《数据中心的电信基础设施标准》.pdf

    1、 TIA STANDARD Telecommunications Infrastructure Standard for Data Centers TIA-942 April 2005 TELECOMMUNICATIONS INDUSTRY ASSOCIATION Representing the telecommunications industry in association with the Electronic Industries Alliance ANSI/TIA-942-2005Approved: April 12, 2005Copyright Telecommunicatio

    2、ns Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NOTICE TIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings between manufacturers and

    3、 purchasers, facilitating interchangeability and improvement of products, and assisting the purchaser in selecting and obtaining with minimum delay the proper product for their particular need. The existence of such Standards and Publications shall not in any respect preclude any member or non-membe

    4、r of TIA from manufacturing or selling products not conforming to such Standards and Publications. Neither shall the existence of such Standards and Publications preclude their voluntary use by Non-TIA members, either domestically or internationally. Standards and Publications are adopted by TIA in

    5、accordance with the American National Standards Institute (ANSI) patent policy. By such action, TIA does not assume any liability to any patent owner, nor does it assume any obligation whatever to parties adopting the Standard or Publication. This Standard does not purport to address all safety prob

    6、lems associated with its use or all applicable regulatory requirements. It is the responsibility of the user of this Standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations before its use. (From Standards Proposal No. 3-0092-C-1, for

    7、mulated under the cognizance of the TIA TR-42.1, Subcommittee on Commercial Building Telecommunications Cabling). Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION Standards and Technology Department 2500 Wilson Boulevard Arlington, VA 22201 U.S.A. PRICE: Please refer to current Catalog of TIA TE

    8、LECOMMUNICATIONS INDUSTRY ASSOCIATION STANDARDS AND ENGINEERING PUBLICATIONS or call Global Engineering Documents, USA and Canada (1-800-854-7179) International (303-397-7956) or search online at http:/www.tiaonline.org/standards/search_n_order.cfm All rights reserved Printed in U.S.A. Copyright Tel

    9、ecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NOTICE OF COPYRIGHT This document is copyrighted by the TIA. Reproduction of these documents either in hard copy or soft copy (including posti

    10、ng on the web) is prohibited without copyright permission. For copyright permission to reproduce portions of this document, please contact TIA Standards Department or go to the TIA website (www.tiaonline.org) for details on how to request permission. Details are located at: http:/www.tiaonline.org/a

    11、bout/faqDetail.cfm?id=18 OR Telecommunications Industry Association Standards (b) there is no assurance that the Document will be approved by any Committee of TIA or any other body in its present or any other form; (c) the Document may be amended, modified or changed in the standards development or

    12、any editing process. The use or practice of contents of this Document may involve the use of intellectual property rights (“IPR”), including pending or issued patents, or copyrights, owned by one or more parties. TIA makes no search or investigation for IPR. When IPR consisting of patents and publis

    13、hed pending patent applications are claimed and called to TIAs attention, a statement from the holder thereof is requested, all in accordance with the Manual. TIA takes no position with reference to, and disclaims any obligation to investigate or inquire into, the scope or validity of any claims of

    14、IPR. TIA will neither be a party to discussions of any licensing terms or conditions, which are instead left to the parties involved, nor will TIA opine or judge whether proposed licensing terms or conditions are reasonable or non-discriminatory. TIA does not warrant or represent that procedures or

    15、practices suggested or provided in the Manual have been complied with as respects the Document or its contents. TIA does not enforce or monitor compliance with the contents of the Document. TIA does not certify, inspect, test or otherwise investigate products, designs or services or any claims of co

    16、mpliance with the contents of the Document. ALL WARRANTIES, EXPRESS OR IMPLIED, ARE DISCLAIMED, INCLUDING WITHOUT LIMITATION, ANY AND ALL WARRANTIES CONCERNING THE ACCURACY OF THE CONTENTS, ITS FITNESS OR APPROPRIATENESS FOR A PARTICULAR PURPOSE OR USE, ITS MERCHANTABILITY AND ITS NON-INFRINGEMENT O

    17、F ANY THIRD PARTYS INTELLECTUAL PROPERTY RIGHTS. TIA EXPRESSLY DISCLAIMS ANY AND ALL RESPONSIBILITIES FOR THE ACCURACY OF THE CONTENTS AND MAKES NO REPRESENTATIONS OR WARRANTIES REGARDING THE CONTENTS COMPLIANCE WITH ANY APPLICABLE STATUTE, RULE OR REGULATION, OR THE SAFETY OR HEALTH EFFECTS OF THE

    18、CONTENTS OR ANY PRODUCT OR SERVICE REFERRED TO IN THE DOCUMENT OR PRODUCED OR RENDERED TO COMPLY WITH THE CONTENTS. TIA SHALL NOT BE LIABLE FOR ANY AND ALL DAMAGES, DIRECT OR INDIRECT, ARISING FROM OR RELATING TO ANY USE OF THE CONTENTS CONTAINED HEREIN, INCLUDING WITHOUT LIMITATION ANY AND ALL INDI

    19、RECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF BUSINESS, LOSS OF PROFITS, LITIGATION, OR THE LIKE), WHETHER BASED UPON BREACH OF CONTRACT, BREACH OF WARRANTY, TORT (INCLUDING NEGLIGENCE), PRODUCT LIABILITY OR OTHERWISE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DA

    20、MAGES. THE FOREGOING NEGATION OF DAMAGES IS A FUNDAMENTAL ELEMENT OF THE USE OF THE CONTENTS HEREOF, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or net

    21、working permitted without license from IHS-,-,-TIA942 1 Telecommunications Infrastructure Standard for Data Centers Table of Contents FOREWORD . 8 1 SCOPE 12 1.1 General 12 1.2 Normative references 12 2 DEFINITION OF TERMS, ACRONYMS AND ABBREVIATIONS, AND UNITS OF MEASURE. 13 2.1 General 13 2.2 Defi

    22、nition of terms . 13 2.3 Acronyms and abbreviations. 17 2.4 Units of measure. 19 3 DATA CENTER DESIGN OVERVIEW 20 3.1 General 20 3.2 Relationship of data center spaces to other building spaces 20 3.3 Tiering . 21 3.4 Consideration for involvement of professionals 21 4 DATA CENTER CABLING SYSTEM INFR

    23、ASTRUCTURE . 22 4.1 The basic elements of the data center cabling system structure 22 5 DATA CENTER TELECOMMUNICATIONS SPACES AND RELATED TOPOLOGIES. 23 5.1 General 23 5.2 Data center structure. 23 5.2.1 Major elements 23 5.2.2 Typical data center topology 24 5.2.3 Reduced data center topologies 24

    24、5.2.4 Distributed data center topologies . 25 5.3 Computer room requirements . 26 5.3.1 General 26 5.3.2 Location . 27 5.3.3 Access . 27 5.3.4 Architectural design . 27 5.3.4.1 Size 27 5.3.4.2 Guidelines for other equipment 27 5.3.4.3 Ceiling height .27 5.3.4.4 Treatment.27 5.3.4.5 Lighting.28 5.3.4

    25、.6 Doors .28 5.3.4.7 Floor loading 28 5.3.4.8 Signage28 5.3.4.9 Seismic considerations 28 5.3.5 Environmental design 28 5.3.5.1 Contaminants.28 5.3.5.2 HVAC .29 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitt

    26、ed without license from IHS-,-,-TIA-942 2 5.3.5.2.1 Continuous operation .29 5.3.5.2.2 Standby operation29 5.3.5.3 Operational parameters .29 5.3.5.4 Batteries.29 5.3.5.5 Vibration.29 5.3.6 Electrical design. 30 5.3.6.1 Power.30 5.3.6.2 Standby power .30 5.3.6.3 Bonding and grounding (earthing)30 5.

    27、3.7 Fire protection 30 5.3.8 Water infiltration. 30 5.4 Entrance room requirements. 30 5.4.1 General 30 5.4.2 Location . 31 5.4.3 Quantity 31 5.4.4 Access . 31 5.4.5 Entrance conduit routing under access floor . 31 5.4.6 Access provider and service provider spaces . 31 5.4.7 Building entrance termin

    28、al . 32 5.4.7.1 General 32 5.4.8 Architectural design . 32 5.4.8.1 General 32 5.4.8.2 Size 32 5.4.8.3 Plywood backboards 33 5.4.8.4 Ceiling height .33 5.4.8.5 Treatment.33 5.4.8.6 Lighting.33 5.4.8.7 Doors .33 5.4.8.8 Signage33 5.4.8.9 Seismic considerations 33 5.4.8.10 HVAC .34 5.4.8.10.1 Continuou

    29、s operation .34 5.4.8.10.2 Standby operation34 5.4.8.11 Operational parameters34 5.4.8.12 Power.34 5.4.8.13 Standby Power.35 5.4.8.14 Bonding and grounding 35 5.4.9 Fire protection 35 5.4.10 Water infiltration. 35 5.5 Main distribution area 35 5.5.1 General 35 5.5.2 Location . 35 5.5.3 Facility requ

    30、irements 35 5.6 Horizontal distribution area . 36 5.6.1 General 36 5.6.2 Location . 36 5.6.3 Facility requirements 36 5.7 Zone distribution area . 36 5.8 Equipment distribution areas 37 5.9 Telecommunications room 37 5.10 Data center support areas. 37 5.11 Racks and cabinets. 37 5.11.1 General 37 5.

    31、11.2 “Hot“ and “cold“ aisles . 38 5.11.3 Equipment placement 38 5.11.4 Placement relative to floor tile grid. 39 5.11.5 Access floor tile cuts 39 5.11.6 Installation of racks on access floors. 39 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo

    32、 reproduction or networking permitted without license from IHS-,-,-TIA942 3 5.11.7 Specifications. 39 5.11.7.1 Clearances.39 5.11.7.2 Cabinet ventilation40 5.11.7.3 Cabinet and rack height .40 5.11.7.4 Cabinet depth and width.40 5.11.7.5 Adjustable rails.40 5.11.7.6 Rack and cabinet finishes 41 5.11

    33、.7.7 Power strips .41 5.11.7.8 Additional cabinet and rack specifications41 5.11.8 Racks and cabinets in entrance room, main distribution areas and horizontal distribution areas 41 6 DATA CENTER CABLING SYSTEMS . 43 6.1 General 43 6.2 Horizontal Cabling. 43 6.2.1 General 43 6.2.2 Topology 44 6.2.3 H

    34、orizontal cabling distances 44 6.2.3.1 Maximum lengths for copper cabling45 6.2.4 Recognized media . 45 6.3 Backbone cabling 46 6.3.1 General 46 6.3.2 Topology 47 6.3.2.1 Star topology47 6.3.2.2 Accommodation of non-star configurations 47 6.3.3 Redundant cabling topologies . 47 6.3.4 Recognized medi

    35、a . 48 6.3.5 Backbone cabling distances 48 6.4 Choosing media 49 6.5 Centralized optical fiber cabling 50 6.5.1 Introduction 50 6.5.2 Guidelines 50 6.6 Cabling transmission performance and test requirements . 51 7 DATA CENTER CABLING PATHWAYS 52 7.1 General 52 7.2 Security for data center cabling 52

    36、 7.3 Separation of power and telecommunications cables 52 7.3.1 Separation between electrical power and twisted-pair cables. 52 7.3.2 Practices to accommodate power separation requirements 53 7.3.3 Separation of fiber and copper cabling 54 7.4 Telecommunications entrance pathways 54 7.4.1 Entrance p

    37、athway types 54 7.4.2 Diversity . 54 7.4.3 Sizing . 54 7.5 Access floor systems 54 7.5.1 General 54 7.5.2 Cable trays for telecommunications cabling 55 7.5.3 Access floor performance requirements 55 7.5.4 Floor tile cut edging 55 7.5.5 Cable types under access floors 55 7.6 Overhead cable trays 56 7

    38、.6.1 General 56 7.6.2 Cable tray support 56 7.6.3 Coordination of cable tray routes. 56 8 DATA CENTER REDUNDANCY 57 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-942 4 8.1

    39、 Introduction . 57 8.2 Redundant maintenance holes and entrance pathways. 57 8.3 Redundant access provider services 58 8.4 Redundant entrance room 58 8.5 Redundant main distribution area. 58 8.6 Redundant backbone cabling . 59 8.7 Redundant horizontal cabling . 59 ANNEX A (INFORMATIVE) CABLING DESIG

    40、N CONSIDERATIONS . 60 A.1 Cabling application distances . 60 A.1.1 T-1, E-1, T-3 and E-3 circuit distances 61 A.1.2 EIA/TIA-232 and EIA/TIA-561 console connections 64 A.1.3 Other application distances . 64 A.2 Cross-connections 64 A.3 Separation of functions in the main distribution area 64 A.3.1 Tw

    41、isted-pair main cross-connect. 64 A.3.2 Coaxial main cross-connect. 65 A.3.3 Optical fiber main cross-connect . 65 A.4 Separation of functions in the horizontal distribution area 65 A.5 Cabling to telecommunications equipment . 65 A.6 Cabling to end equipment . 66 A.7 Fiber design consideration 66 A

    42、.8 Copper design consideration 66 ANNEX B (INFORMATIVE) TELECOMMUNICATIONS INFRASTRUCTURE ADMINISTRATION 67 B.1 General 67 B.2 Identification scheme for floor space 67 B.3 Identification scheme for racks and cabinets 67 B.4 Identification scheme for patch panels 68 B.5 Cable and patch cord identifie

    43、r . 70 ANNEX C (INFORMATIVE) ACCESS PROVIDER INFORMATION. 72 C.1 Access provider coordination 72 C.1.1 General 72 C.1.2 Information to provide to access providers 72 C.1.3 Information that the access providers should provide . 72 C.2 Access provider demarcation in the entrance room . 73 C.2.1 Organi

    44、zation. 73 C.2.2 Demarcation of low-speed circuits. 73 C.2.3 Demarcation of T-1 circuits 76 C.2.4 Demarcation of E-3 Part 1 General Requirements Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without licen

    45、se from IHS-,-,-TIA942 9 ANSI/TIA/EIA-568-B.2, Commercial Building Telecommunications Cabling Standard; Part 2 Balanced Twisted-Pair Cabling Components ANSI/TIA/EIA-568-B.3, Optical Fiber Cabling Components Standard ANSI/TIA-569-B, Commercial Building Standard for Telecommunications Pathways and Spa

    46、ces ANSI/TIA/EIA-606-A, Administration Standard for Commercial Telecommunications Infrastructure ANSI/TIA/EIA-J-STD-607, Commercial Building Grounding (Earthing) and Bonding Requirements for Telecommunications ANSI/TIA-758-A, Customer-Owned Outside Plant Telecommunications Cabling Standard This Stan

    47、dard contains references to national and international standards as well as other documents when appropriate. National Electrical Safety Code (NESC) (IEEE C 2) Life Safety Code (NEC) (NFPA 101) National Electrical Code (NEC) (NFPA 70) Standard for the Protection of Information Technology Equipment (

    48、NFPA 75) Engineering Requirements for a Universal Telecommunications Frame (ANSI T1.336) Recommended Practice for Powering and Grounding Electronic Equipment (IEEE Std. 1100) Recommended Practice for Emergency and Standby Power Systems for Industrial and Commercial Applications (IEEE Std. 446) Telco

    49、rdia specifications (GR-63-CORE (NEBS) and (GR-139-CORE) ASHRAE Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-942 10 Thermal Guidelines for Data Processing Environments In Canada, the National Building Code, the National Fire Code, Canadian Electrical C


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