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
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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
