ISO/IEC TS 22237-5:2018
(Main)Information technology — Data centre facilities and infrastructures — Part 5: Telecommunications cabling infrastructure
Information technology — Data centre facilities and infrastructures — Part 5: Telecommunications cabling infrastructure
ISO/IEC TS 22237-5:2018 addresses the wide range of telecommunications cabling infrastructures within data centres based upon the criteria and classifications for "availability" within ISO/IEC TS 22237‑1. ISO/IEC TS 22237-5:2018 specifies requirements and recommendations for the following: a) information technology and network telecommunications cabling (e.g. SAN and LAN); b) general information technology cabling to support the operation of the data centre; c) telecommunications cabling to monitor and control, as appropriate, power distribution, environmental control and physical security of the data centre; d) other building automation cabling; e) pathways, spaces and enclosures for the telecommunications cabling infrastructures. Safety and electromagnetic compatibility (EMC) requirements are outside the scope of this document and are covered by other standards and regulations. However, information given in this document may be of assistance in meeting these standards and regulations.
Technologie de l’information — Installation et infrastructures de centres de traitement de données — Partie 5: Infrastructure du câblage dédié télécommunications
General Information
Standards Content (Sample)
TECHNICAL ISO/IEC TS
SPECIFICATION 22237-5
First edition
2018-05
Information technology — Data centre
facilities and infrastructures —
Part 5:
Telecommunications cabling
infrastructure
Technologie de l’information — Installation et infrastructures de
centres de traitement de données —
Partie 5: Infrastructure du câblage dédié télécommunications
Reference number
ISO/IEC TS 22237-5:2018(E)
©
ISO/IEC 2018
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ISO/IEC TS 22237-5:2018(E)
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ISO/IEC TS 22237-5:2018(E)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and abbreviations . 2
3.1 Terms and definitions . 2
3.2 Abbreviated terms . 3
4 Conformance . 4
5 Telecommunications cabling within the data centre . 4
5.1 General . 4
5.1.1 The importance of telecommunications cabling within data centre spaces . 4
5.1.2 Cabling implementation . 5
5.1.3 Point-to-point cabling. 5
5.1.4 Fixed cabling . 6
5.2 Information technology and network telecommunications cabling in the computer
room space . 7
5.2.1 General. 7
5.2.2 Generic cabling for data centre information technology equipment . 8
5.2.3 Generic cabling for office network information technology equipment . 9
5.2.4 Generic cabling for monitoring and control . 9
5.2.5 Application-specific fixed cabling .10
5.3 Structured cabling for other data centre spaces and application-specific structured
cabling .10
5.3.1 General.10
5.3.2 Application-specific cabling using a fixed infrastructure .10
6 Availability design principles for telecommunications cabling infrastructure .11
7 Availability classification for telecommunications cabling infrastructure .11
7.1 General .11
7.2 Telecommunications cabling for the computer room .12
7.2.1 Cabling for Availability Class 1 . .12
7.2.2 Cabling for Availability Class 2 . .13
7.2.3 Cabling for Availability Class 3 . .14
7.2.4 Cabling for Availability Class 4 . .15
7.3 Telecommunications cabling for offices .16
7.4 Telecommunications cabling for monitoring and control .16
8 Pathways and pathway systems for telecommunications cabling .16
8.1 General .16
8.2 Pathways .17
8.2.1 External service pathways .17
8.2.2 Data centre pathways .17
8.3 Pathway systems .18
8.3.1 Requirements for data centre pathway systems .18
8.3.2 Access floor tile openings .18
8.3.3 Cable management systems .18
9 Cabinets and racks for the computer room space .19
9.1 General requirements .19
9.2 Requirements for dimensions.19
9.3 Recommendations .19
10 Documentation and quality plan .20
10.1 Requirements for documentation .20
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ISO/IEC TS 22237-5:2018(E)
10.2 Recommendations for documentation .20
10.3 Requirements for the quality plan .20
11 Management and operation of the telecommunications cabling infrastructure .20
11.1 General .20
11.2 Automated infrastructure management systems .20
11.3 Fibre optic cabling.20
Annex A (normative) Cabling design concepts .21
Annex B (informative) Energy efficiency considerations for the telecommunications cabling
infrastructure .29
Bibliography .30
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ISO/IEC TS 22237-5:2018(E)
Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are
members of ISO or IEC participate in the development of International Standards through technical
committees established by the respective organization to deal with particular fields of technical
activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international
organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the
work. In the field of information technology, ISO and IEC have established a joint technical committee,
ISO/IEC JTC 1.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for
the different types of document should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject
of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent
rights. Details of any patent rights identified during the development of the document will be in the
Introduction and/or on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following
URL: www .iso .org/iso/foreword .html.
This document was prepared by Technical Committee ISO/IEC JTC 1, Information technology,
Subcommittee SC 39, Sustainability for and by Information Technology.
A list of all parts in the ISO/IEC TS 22237 series can be found on the ISO website.
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ISO/IEC TS 22237-5:2018(E)
Introduction
The unrestricted access to internet-based information demanded by the information society has led to
an exponential growth of both internet traffic and the volume of stored/retrieved data. Data centres
are housing and supporting the information technology and network telecommunications equipment
for data processing, data storage and data transport. They are required both by network operators
(delivering those services to customer premises) and by enterprises within those customer premises.
Data centres need to provide modular, scalable and flexible facilities and infrastructures to easily
accommodate the rapidly changing requirements of the market. In addition, energy consumption of data
centres has become critical both from an environmental point of view (reduction of carbon footprint)
and with respect to economical considerations (cost of energy) for the data centre operator.
The implementation of data centres varies in terms of:
a) purpose (enterprise, co-location, co-hosting or network operator facilities);
b) security level;
c) physical size;
d) accommodation (mobile, temporary and permanent constructions).
The needs of data centres also vary in terms of availability of service, the provision of security and
the objectives for energy efficiency. These needs and objectives influence the design of data centres
in terms of building construction, power distribution, environmental control and physical security.
Effective management and operational information is required to monitor achievement of the defined
needs and objectives.
The ISO/IEC TS 22237 series specifies requirements and recommendations to support the various
parties involved in the design, planning, procurement, integration, installation, operation and
maintenance of facilities and infrastructures within data centres. These parties include:
1) owners, facility managers, ICT managers, project managers, main contractors;
2) architects, building designers and builders, system and installation designers;
3) facility and infrastructure integrators, suppliers of equipment;
4) installers, maintainers.
At the time of publication of this document, the ISO/IEC TS 22237 series will comprise the following
documents:
ISO/IEC TS 22237-1, Information technology — Data centre facilities and infrastructures — Part 1: General
concepts
ISO/IEC TS 22237-2, Information technology — Data centre facilities and infrastructures — Part 2:
Building construction
ISO/IEC TS 22237-3, Information technology — Data centre facilities and infrastructures — Part 3: Power
distribution
ISO/IEC TS 22237-4, Information technology — Data centre facilities and infrastructures — Part 4:
Environmental control
ISO/IEC TS 22237-5, Information technology — Data centre facilities and infrastructures — Part 5:
Telecommunications cabling infrastructure
ISO/IEC TS 22237-6, Information technology — Data centre facilities and infrastructures — Part 6:
Security systems
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ISO/IEC TS 22237-5:2018(E)
ISO/IEC TS 22237-7, Information technology — Data centre facilities and infrastructures — Part 7:
Management and operational information
The inter-relationship of the specifications within the ISO/IEC TS 22237 series is shown in Figure 1.
Figure 1 — Schematic relationship between the ISO/IEC TS 22237 series of documents
ISO/IEC TS 22237-2 to ISO/IEC TS 22237-6 specify requirements and recommendations for particular
facilities and infrastructures to support the relevant classification for “availability”, “security” and
“energy efficiency enablement” selected from ISO/IEC TS 22237-1.
This document addresses the specific requirements for the telecommunications cabling infrastructure
in data centres used for the purpose of IT networking and building services (in accordance with the
requirements of ISO/IEC TS 22237-1).
ISO/IEC TS 22237-7 addresses the operational and management information (in accordance with the
requirements of ISO/IEC TS 22237-1.
This document is intended for use by and collaboration between architects, building designers and
builders, system and installation designers.
The ISO/IEC TS 22237 series does not address the selection of information technology and network
telecommunications equipment, software and associated configuration issues.
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TECHNICAL SPECIFICATION ISO/IEC TS 22237-5:2018(E)
Information technology — Data centre facilities and
infrastructures —
Part 5:
Telecommunications cabling infrastructure
1 Scope
This document addresses the wide range of telecommunications cabling infrastructures within data
centres based upon the criteria and classifications for “availability” within ISO/IEC TS 22237-1.
This document specifies requirements and recommendations for the following:
a) information technology and network telecommunications cabling (e.g. SAN and LAN);
b) general information technology cabling to support the operation of the data centre;
c) telecommunications cabling to monitor and control, as appropriate, power distribution,
environmental control and physical security of the data centre;
d) other building automation cabling;
e) pathways, spaces and enclosures for the telecommunications cabling infrastructures.
Safety and electromagnetic compatibility (EMC) requirements are outside the scope of this document
and are covered by other standards and regulations. However, information given in this document may
be of assistance in meeting these standards and regulations.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO/IEC 11801-1, Information technology — Generic cabling systems — Part 1: General requirements
ISO/IEC 11801-2, Information technology — Generic cabling systems — Part 2: Office premises
ISO/IEC 11801-5, Information technology — Generic cabling systems — Part 5: Data centres
ISO/IEC 11801-6, Information technology — Generic cabling systems — Part 6: Distributed building
services
ISO/IEC 14763-2, Information technology — Implementation and operation of customer premises
cabling — Part 2: Planning and installation
ISO/IEC TS 22237-1:2018, Information technology — Data centre facilities and infrastructures — Part 1:
General concepts
ISO/IEC TS 22237-2, Information technology — Data centre facilities and infrastructures — Part 2:
Building construction
ISO/IEC TS 22237-4, Information technology — Data centre facilities and infrastructures — Part 4:
Environmental control
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ISO/IEC TS 22237-5:2018(E)
ISO/IEC TS 22237-7, Information technology — Data centre facilities and infrastructures — Part 7:
Management and operational information
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/IEC TS 22237-1 and the
following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http: //www .electropedia .org/
— ISO Online browsing platform: available at https: //www .iso .org/obp
3.1.1
application-specific cabling
structured cabling with a configuration and performance which is considered to provide a specific
benefit for a single, or limited number of applications, as compared to generic cabling
3.1.2
central patching location
passive cross-connect to connect different functional elements of a data centre
Note 1 to entry: A central patching location can be located in the main distribution area and/or the intermediate
distribution area and is therefore a special configuration of an MD and/or an ID.
3.1.3
cross-connect
method of connecting a patch panel port to another patch panel port by the use of a patch cord or jumper
3.1.4
data centre information technology equipment
equipment in the computer room space of a data centre that transports and/or stores and/or processes
information
3.1.5
fixed cabling
cabling subsystem between closures which has either a peer-to-peer or hierarchical structure and
which enables the installation of cross-connects or interconnects at those closures
3.1.6
generic cabling
structured telecommunications cabling system, capable of supporting a wide range of applications
Note 1 to entry: Application-specific hardware is not a part of generic cabling.
Note 2 to entry: Generic cabling can be installed without prior knowledge of the required applications.
[SOURCE: ISO/IEC 11801-1:2017, 3.1.46 — modified: Notes 1 and 2 to entry added]
3.1.7
interconnect
method of connecting a patch panel port to an equipment port by the use of equipment cords
3.1.8
office network information technology equipment
equipment in data centre spaces that transports and/or stores and/or processes information
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ISO/IEC TS 22237-5:2018(E)
3.1.9
point-to-point connection
direct connection of two pieces of IT equipment using a dedicated cable rather than a generic
cabling system
3.1.10
structured cabling
telecommunications cabling comprising fixed cables between points of distribution at which equipment
or other fixed cables may be connected
3.1.11
telecommunications provider
either an access provider or a service provider
3.1.12
zone patching location
passive cross-connect to connect different function elements of a data centre zone
Note 1 to entry: A zone patching location can be located in the zone distribution area and is therefore a special
configuration of a ZD.
3.2 Abbreviated terms
For the purposes of this document, the abbreviated terms given in ISO/IEC TS 22237-1 and the following
abbreviated terms apply.
BEF Building Entrance Facility
BD Building Distributor
Connection
C
CD Campus Distributor
CP Consolidation Point
CPL Central Patching Location
ENI External Network Interface
EO Equipment Outlet
EoR End of Row
EQP Transmission Equipment
FD Floor Distributor
ID Intermediate Distributor
LDP Local Distribution Point
MD Main Distributor
MoR Middle of Row
SCP Service Concentration Point
SD Service Distributor
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ISO/IEC TS 22237-5:2018(E)
SO Service Outlet
TE Terminal Equipment
TO Telecommunications Outlet
ToR Top of Rack
ZD Zone Distributor
ZPL Zone Patching Location
4 Conformance
For a data centre to conform to this document:
a) the cabling design shall meet the requirements of Clause 5;
b) the cabling design for the selected Availability Class shall be in accordance with Clause 7;
c) the design and specifications of pathways and spaces shall be in accordance with Clauses 8 and 9;
d) the information technology cabling to support the operation of the data centre shall be in
accordance with ISO/IEC 11801-2, except where 7.3 allows an alternative approach;
e) the information technology cabling to support the IT networking function of the data centre shall
be in accordance with ISO/IEC 11801-5, except where 7.2 allows an alternative approach;
f) telecommunications cabling for monitoring and/or control of power distribution, environmental
control and physical security shall be in accordance with ISO/IEC 11801-6, except where 7.4 allows
an alternative approach;
g) installation specification, quality assurance, installation planning and practice of cabling shall be
in accordance with ISO/IEC 14763-2 and Clauses 8 and 9;
h) national and local regulations, including safety, shall be met.
5 Telecommunications cabling within the data centre
5.1 General
5.1.1 The importance of telecommunications cabling within data centre spaces
The telecommunications cabling within the data centre serves to support the following:
a) data centre information technology and network telecommunications;
b) monitoring and controlling of other data centre infrastructures;
c) building management and automation.
The design and planning of cabling infrastructures should be undertaken at an early stage of the data
centre design or refurbishment and should be integrated with the design and planning of:
1) electrical power;
2) environmental control systems;
3) security systems;
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ISO/IEC TS 22237-5:2018(E)
4) lighting systems.
This clause defines the requirements and recommendations for the performance, design criteria and
architectures for the different cabling types in a data centre.
The importance of the information technology and network telecommunications cabling infrastructure
is similar to that of other infrastructures such as environmental control, power distribution and security.
As with other utilities, interruptions to service can have a 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 organization's effectiveness.
5.1.2 Cabling implementation
The cabling infrastructures in a data centre shall be appropriate to provide networking and
telecommunications capabilities in and between dedicated data centre spaces.
For the purposes of this document, two types of cabling are considered for data centre spaces:
a) point-to-point;
b) fixed cabling implemented using structured cabling including the generic cabling solutions of the
ISO/IEC 11801 series. The closures may be grouped and accommodated in cabinets, frames or racks
which act as cabling presentation facilities. The cabling presentation facilities allow interconnection
or cross-connections between fixed cabling or between fixed cabling and IT equipment in close
proximity.
5.1.3 Point-to-point cabling
5.1.3.1 General
The point-to-point connection method uses discrete cords (typically factory-produced) that directly
connect the active equipment. Each cord connects a single port of one device to a single port of
another device.
Although point-to-point cabling seems to be the simplest and most cost effective method of providing
connections, for several reasons this cabling type should only be used for connections within the
same or two adjacent cabinets, frames or racks. Point-to-point cabling is often not reusable as the data
centre evolves and equipment types and locations change and may have a limited life time expectation.
Continuous changes to the required interconnections increase both the planning and the operational
resources required for each change (see Figure 2 and Figure 3) and increases the risk of interfering
with other infrastructures — including those for environmental control.
5.1.3.2 Restrictions on the use of point-to-point cabling
Where this document allows point-to-point cabling, it should only be used subject to the following
restrictions:
a) the mechanical performance of cords or cables used for point-to-point connections shall meet the
requirements of the installation environment (e.g. pathway systems);
b) connectors on cords shall be protected against damage during installation, disconnection or
removal;
c) point-to-point connections shall only be used where the replacement of the cord following damage
to either connector can be performed without disruption to the data centre operation;
d) cords shall be managed so as to avoid mechanical dama
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