Information technology - Data centre facilities and infrastructures - Part 99-1: Recommended practices for energy management

This Technical Report contains a set of recommended practices for improving the energy management (i.e. reduction of energy consumption and/or increases in energy efficiency) of data centres. It supports participants of the EU Code of Conduct for data centres to fulfil the scheme’s requirements

Informationstechnik - Einrichtungen und Infrastrukturen von Rechenzentren - Teil 99-1: Empfohlene Praktiken für das Energiemanagement

Technologies de l’information - Installation et infrastructures des centres de traitement de données - Partie 99-1: Pratiques recommandées relatives à la gestion énergétique

Informacijska tehnologija - Naprave in infrastruktura podatkovnega centra - 99-1. del: Priporočene prakse za upravljanje z energijo

General Information

Status
Published
Publication Date
07-Oct-2021
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
05-Oct-2021
Due Date
10-Dec-2021
Completion Date
08-Oct-2021

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SLOVENSKI STANDARD
SIST-TP CLC/TR 50600-99-1:2021
01-november-2021
Nadomešča:
SIST-TP CLC/TR 50600-99-1:2020

Informacijska tehnologija - Naprave in infrastruktura podatkovnega centra - 99-1.

del: Priporočene prakse za upravljanje z energijo
Information technology - Data centre facilities and infrastructures - Part 99-1:
Recommended practices for energy management

Informationstechnik - Einrichtungen und Infrastrukturen von Rechenzentren - Teil 99-1:

Empfohlene Praktiken für das Energiemanagement

Technologies de linformation - Installation et infrastructures des centres de traitement de

données - Partie 99-1: Pratiques recommandées relatives à la gestion énergétique
Ta slovenski standard je istoveten z: CLC/TR 50600-99-1:2021
ICS:
27.015 Energijska učinkovitost. Energy efficiency. Energy
Ohranjanje energije na conservation in general
splošno
35.110 Omreževanje Networking
SIST-TP CLC/TR 50600-99-1:2021 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST-TP CLC/TR 50600-99-1:2021
TECHNICAL REPORT CLC/TR 50600-99-1
RAPPORT TECHNIQUE
TECHNISCHER BERICHT
August 2021
ICS 35.020; 35.110; 35.160 Supersedes CLC/TR 50600-99-1:2020
English Version
Information technology - Data centre facilities and infrastructures
- Part 99-1: Recommended practices for energy management

Technologies de l'information - Installation et Informationstechnik - Einrichtungen und Infrastrukturen von

infrastructures des centres de traitement de données - Rechenzentren - Teil 99-1: Empfohlene Praktiken für das

Partie 99-1: Pratiques recommandées relatives à la gestion Energiemanagement
énergétique
This Technical Report was approved by CENELEC on 2021-07-26.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. CLC/TR 50600-99-1:2021 E
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Contents Page

European foreword .................................................................................................................. 4

Introduction ............................................................................................................................. 5

1 Scope .............................................................................................................................. 9

2 Normative references ....................................................................................................... 9

3 Terms, definitions and abbreviations ................................................................................ 9

3.1 Terms and definitions ......................................................................................... 9

3.2 Abbreviations ................................................................................................... 12

4 Principles ....................................................................................................................... 13

4.1 General ............................................................................................................ 13

4.2 Data centre utilization, management and planning ............................................ 14

4.3 Data centre ICT equipment and services .......................................................... 14

4.4 Data centre cooling equipment ......................................................................... 15

4.5 Data centre power equipment ........................................................................... 16

4.6 Other data centre equipment ............................................................................ 16

4.7 Data centre building ......................................................................................... 16

4.8 Data centre monitoring ..................................................................................... 17

5 Expected practices ........................................................................................................ 18

5.1 Existing data centres ........................................................................................ 18

5.2 ICT equipment (new or replacement) ................................................................ 24

5.3 Software install or upgrade (Reserved for future new expected Practices) ......... 28

5.4 New build or refurbishment of data centres ....................................................... 28

5.5 Data Centre Monitoring: Energy consumption and environmental

measurement ................................................................................................... 35

5.6 Reserved for future new expected Practices from 2022 onwards ....................... 35

6 Optional and alternative Practices .................................................................................. 36

6.1 Existing data centres ........................................................................................ 36

6.2 ICT equipment (new or replacement) ................................................................ 40

6.3 Software install or upgrade ............................................................................... 42

6.4 New build or refurbishment of data centres ....................................................... 43

6.5 KPI calculation and reporting ............................................................................ 46

6.6 Reserved for future new optional and alternative practices from 2022

onwards ........................................................................................................... 47

7 Practices under consideration ........................................................................................ 47

7.1 Practices expected to be included in Clause 5 in due course ............................. 47

7.1.1 Existing data centres ....................................................................... 47

7.1.2 ICT equipment (new or replacement) ............................................... 47

7.1.3 Software install or upgrade .............................................................. 47

7.1.4 New build or refurbishment of data centres (any data centre
built or undergoing a significant refit of the mechanical and

electrical equipment from 2015 onwards) ........................................ 47

7.2 Practices expected to be included in Clause 6 in due course ............................. 47

7.2.1 Existing data centres ....................................................................... 47

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7.2.2 ICT equipment (new or replacement) ............................................... 47

7.2.3 Software install or upgrade .............................................................. 48

7.2.4 New build or refurbishment of data centres (any data centre
built or undergoing a significant refit of the mechanical and

electrical equipment from 2015 onwards) ........................................ 48

Annex A (informative) Environmental classifications ............................................................. 49

A.1 ASHRAE classifications ................................................................................................. 49

A.2 ETSI EN 300 019-1-3 classifications .............................................................................. 49

Bibliography .......................................................................................................................... 51

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European foreword

This document (CLC/TR 50600-99-1:2021) has been prepared by CLC/TC 215 “Electrotechnical

aspects of telecommunication equipment” in conjunction with the Directorate-General Joint Research

Centre (DG JRC) of the European Commission (EC).
This document supersedes CLC/TR 50600-99-1:2020.

CLC/TR 50600-99-1:2021 includes the following significant technical changes with respect to

CLC/TR 50600-99-1:2020:

— update to recently agreed energy management practices and align with the 2021 edition of the EU

Code of Conduct for data centres Best Practices document;
— new practices added in 5.5, 6.5, 7.2.2, 7.2.3 and 7.2.4;
— re-arrangement of some practices and editorial improvements;

— the practices on “Smart Grid” and “Capture Ready infrastructure” have been re-located to

CLC/TR 50600-99-2:2021.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

This document has been prepared under a Standardization Request given to CENELEC by the

European Commission and the European Free Trade Association.

This document aligns with the Best Practices document of the Code of Conduct for Data Centre

Energy Efficiency (CoC) scheme operated by the DG JRC and continues to be prepared by data centre

experts from operators, vendors, consultants, academics, professional and national bodies.

The publication of this document is intended to integrate recommended practices of energy

management into the EN 50600 series developed by CLC/TC 215.
Regarding the structure of the EN 50600 series, see the Introduction.

Any feedback and questions on this document should be directed to the users’ national committee. A

complete listing of these bodies can be found on the CENELEC website.
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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 usually 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 environmental

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, telecommunications cabling

and physical security as well as the operation of the data centre. Effective management and

operational information is important in order to monitor achievement of the defined needs and

objectives.

Recognizing the substantial resource consumption, particularly of energy, of larger data centres, it is

also important to provide tools for the assessment of that consumption both in terms of overall value

and of source mix and to provide Key Performance Indicators (KPIs) to evaluate trends and drive

performance improvements.

At the time of publication of this document, the EN 50600 series is designed as a framework of

standards, technical specifications and technical reports covering the design, the operation and

management, the key performance indicators for energy efficient operation of the data centre as well

as a data centre maturity model.
The EN 50600-2 series defines the requirements for the data centre design.

The EN 50600-3 series defines the requirements for the operation and the management of the data

centre.

The EN 50600-4 series defines the key performance indicators for the data centre.

The CLC/TS 50600-5 series defines the data centre maturity model requirements and

recommendations.

The CLC/TR 50600-99-X Technical Reports cover recommended practices and guidance for specific

topics around data centre operation and design.

This series of documents 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, operators, facility managers, ICT managers, project managers, main contractors;

2) consulting engineers, architects, building designers and builders, system and installation

designers, auditors, test and commissioning agents;
3) facility and infrastructure integrators, suppliers of equipment;
4) installers, maintainers.
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At the time of publication of this document, the EN 50600 series will comprise the following standards

and documents:

EN 50600-1, Information technology — Data centre facilities and infrastructures — Part 1: General

concepts

EN 50600-2-1, Information technology — Data centre facilities and infrastructures — Part 2-1: Building

construction

EN 50600-2-2, Information technology — Data centre facilities and infrastructures — Part 2-2: Power

supply and distribution

EN 50600-2-3, Information technology — Data centre facilities and infrastructures — Part 2-3:

Environmental control

EN 50600-2-4, Information technology — Data centre facilities and infrastructures — Part 2-4:

Telecommunications cabling infrastructure

EN 50600-2-5, Information technology — Data centre facilities and infrastructures — Part 2-5: Security

systems

EN 50600-3-1, Information technology — Data centre facilities and infrastructures — Part 3-1:

Management and operational information

EN 50600-4-1, Information technology — Data centre facilities and infrastructures — Part 4-1:

Overview of and general requirements for key performance indicators

EN 50600-4-2, Information technology — Data centre facilities and infrastructures — Part 4-2: Power

Usage Effectiveness

EN 50600-4-3, Information technology — Data centre facilities and infrastructures — Part 4-3:

Renewable Energy Factor

EN 50600-4-6, Information technology — Data centre facilities and infrastructures — Part 4-6: Energy

Reuse Factor

EN 50600-4-7, Information technology — Data centre facilities and infrastructures — Part 4-7: Cooling

Efficiency Ratio

CLC/TS 50600-2-10: Information technology — Data centre facilities and infrastructures — Part 2-10:

Earthquake risk and impact analysis

CLC/TR 50600-99-1, Information technology — Data centre facilities and infrastructures — Part 99-1:

Recommended practices for energy management

CLC/TR 50600-99-2, Information technology — Data centre facilities and infrastructures — Part 99-2:

Recommended practices for environmental sustainability

CLC/TR 50600-99-3, Information technology — Data centre facilities and infrastructures — Part 99-3:

Guidance to the application of EN 50600 series.

The inter-relationship of the documents within the EN 50600 series is shown in Figure 1.

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Figure 1 — Schematic relationship between the EN 50600 series of documents

EN 50600-2-X documents specify requirements and recommendations for particular facilities and

infrastructures to support the relevant classification for “availability”, “physical security” and “energy

efficiency enablement” selected from EN 50600-1.

EN 50600-3-X documents specify requirements and recommendations for data centre operations,

processes and management.

EN 50600-4-X documents specify requirements and recommendations for key performance indicators

(KPIs) used to assess and improve the resource usage efficiency and effectiveness, respectively, of a

data centre.

The Directorate-General Joint Research Centre (DG JRC) of the European Commission operates a

Code of Conduct for Data Centre Energy Efficiency (CoC) scheme. In support of the scheme, a “best

practices” document has been established by DG JRC. To enhance the visibility, these Best Practices

have been converted in this document to create recommended Practices for improving the energy

management (i.e. reduction of energy consumption and/or increases in energy efficiency) of data

centres.
The areas addressed are:
— physical building;
— mechanical and electrical equipment;
— computer room;
— cabinets/racks;
— ICT equipment;
— operating systems;
— virtualization;
— software;
— business practices.
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The Practices are separated into Expected Practices as referenced in the CoC (see Clause 5) and

other Practices which can be employed as optional or alternative solutions in particular cases

(see Clause 6). Practices under consideration for the next or future revision/amendment of this

document are included in Clause 7. During the maintenance of this document, the Practices of

Clauses 6 and 7 might be augmented and others might migrate into Clause 5.

The Practices listed in Clauses 5, 6 and 7 are referenced as x.yyy where x is the clause number and

yyy is a sequential number starting within each (sub-)clause.

Customers or suppliers of information and communication technology (ICT) services might also find it

useful to request or provide a list of the Practices of this document that are implemented in a data

centre to assist in procurement of services that meet their environmental or sustainability standards.

This document also:

— acts as an education and reference document to assist data centre operators in identifying and

implementing measures to improve the energy management of their data centres;

— provides a common terminology and frame of reference for describing an energy management

practice, avoiding doubt or confusion over terminology.
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1 Scope

This document is a compilation of recommended Practices for improving the energy management (i.e.

reduction of energy consumption and/or increases in energy efficiency) of data centres.

NOTE It is historically aligned with the EU Code of Conduct for Data Centre Energy Efficiency (CoC)

scheme operated by the Directorate-General Joint Research Centre (DG JRC) of the European Commission

(EC), however contains additional practices.

It is recognized that the Practices included might not be universally applicable to all scales and

business models of data centres or be undertaken by all parties involved in data centre operation,

ownership or use.
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.

EN 14511 series, Air conditioners, liquid chilling packages and heat pumps for space heating and

cooling and process chillers, with electrically driven compressors

EN 50600-1:2019, Information technology - Data centre facilities and infrastructures - Part 1: General

concepts

EN 50600 series, Information technology — Data centre facilities and infrastructures

3 Terms, definitions and abbreviations
3.1 Terms and definitions

For the purposes of this document, the terms and definitions in the EN 50600 series 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
airflow pathway
route taken by air to reach a specific point
3.1.2
albedo
diffuse reflectivity or reflecting power of a surface
3.1.3
availability

ability of an item to be in a state to perform a required function under given conditions at a given instant

of time or over a given time interval, assuming that the required external resources are provided

[SOURCE: EN 50600-1:2019, 3.1.1]
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3.1.4
cable management system

system used for the support and/or containment, retention, protection of all types of cables, information

and communication lines, electrical power distribution conductors and their associated accessories

(includes ducts and tubes housing, or intended to house, blown information technology cables and/or

cable elements)
[SOURCE: EN 50174-1:2018, 3.1.9]
3.1.5
co-location data centre

data centre in which multiple customers locate their own network(s), servers and storage equipment

Note 1 to entry: The support infrastructure of the building (such as power distribution and environmental control)

is provided as a service by the data centre operator.
[SOURCE: EN 50600-1:2019, 3.1.6]
3.1.6
computer room space

area within the data centre that accommodates the data processing, data storage and

telecommunication equipment that provides the primary function of the data centre

[SOURCE: EN 50600-1:2019, 3.1.7]
3.1.7
computer room air conditioning/computer room air handling
CRAC/CRAH

equipment that provides cooling airflow volumes into a computer room as a means of environmental

control

Note 1 to entry: Other abbreviations such as CCU, DFU, RACU, UFU are sometimes used to refer to such

equipment.
3.1.8
cooling economizer

system to enable the use of cool external condition to provide cooling to internal data centre spaces

without the use of mechanical cooling or refrigeration
Note 1 to entry: Also referenced as “free cooling”.

Note 2 to entry: Free cooling / economised cooling designs take advantage of cool ambient conditions to meet

part or all of the facilities’ cooling requirements so that the dependency on any form of mechanical cooling

including compressors is reduced or even removed entirely, which can result in significant energy reduction.

Note 3 to entry: The opportunities for the utilization of free cooling are increased in cooler and dryer climates

and where increased temperature set points are used. Where refrigeration plant can be reduced in size (or

eliminated), operating and capital cost are reduced, including that of the required supporting electrical

infrastructure.
Note 4 to entry: Free cooling can be retrofitted to some facilities.
3.1.9
data centre

structure, or group of structures, dedicated to the centralized accommodation, interconnection and

operation of information technology and network telecommunications equipment providing data

storage, processing and transport services together with all the facilities and infrastructures for power

distribution and environmental control together with the necessary levels of resilience and security

required to provide the desired service availability
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Note 1 to entry: A structure can consist of multiple buildings and/or spaces with specific functions to support the

primary function.

Note 2 to entry: The boundaries of the structure or space considered the data centre which includes the

information and communication technology equipment and supporting environmental controls can be defined

within a larger structure or building.
[SOURCE: EN 50600-1:2019, 3.1.9]
3.1.10
direct liquid-cooled ICT equipment

ICT equipment that is cooled by a direct flow of liquid into an equipment cabinet or directly to the ICT

equipment chassis to provide cooling rather than the use of moving air
3.1.11
energy efficiency

measure of the work done (as a result of design and/or operational procedures) for a given amount of

energy consumed
3.1.12
energy management

combination of reduced energy consumption and increased energy efficiency, re-use of energy and

use of renewable energy

Note 1 to entry: See also EN 50600-3-1 for another definition of energy management.

3.1.13
enterprise data centre

data centre that is operated by an enterprise which has the sole purpose of the delivery and

management of services to its employees and customers
[SOURCE: EN 50600-1:2019, 3.1.14]
3.1.14
grid

interconnection of ICT resources in multiple locations to achieve a common objective

3.1.15
hot aisle/cold aisle

construction of cabinets and containment intended to prevent the mixing of ICT equipment

intake and exhaust air within computer room space(s)
3.1.16
information and communication technology equipment
ICT equipment

information technology (IT) and network telecommunications (NT) equipment providing data storage,

processing and transport services
Note 1 to entry: Representing the “critical load” of the data centre.
3.1.17
insolation

total amount of solar radiation energy received on a given surface area during a given time

3.1.18
make-up air

air introduced into a data centre space to replace air that is exhausted through ventilation or

combustion processes
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3.1.19
managed service

data centre operated to provide a defined set of services to its clients either proactively or as the

managed service provider (not the client) determines that services are needed
3.1.20
rack

open construction, typically self-supporting and floor-mounted, for housing closures and other

information technology equipment
[SOURCE: EN 50174-1:2018, 3.1.34]
3.1.21
resilience

ability to withstand and reduce the magnitude and/or duration of disruptive events, which includes the

capability to anticipate, absorb, adapt to, and/or rapidly recover from such an event

[SOURCE: IEEE Technical Report PES-TR65]
3.1.22
set-point
desired or target value (maximum or minimum) for either temperature or humidity
3.1.23
virtualization

creation of a virtual version of physical ICT equipment or resource to offer a more efficient use of ICT

hardware
3.2 Abbreviations

For the purposes of this document, the following abbreviations apply in addition to those of the

EN 50600 series.
AC Alternating current
ASHRAE Formerly “American Society of Heating, Refrigeration and Air conditioning
Engineers”
BIOS Basic input/output system
BREEAM Building Research Establishment Environmental Assessment Methodology
CoC EC DG JRC Code of Conduct for Data Centre Energy Efficiency
CRAC/CRAH Computer room air conditioning/computer room air handling
DC Direct current
DCiE Data centre infrastructure efficiency
DCIM Data centre infrastructure management
DG JRC Directorate-General Joint Research Council of the European Commission
DX Direct expansion
EC European Commission
ICT Information and communications technology
IP Internet protocol
IT Information technology
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ITIL Information Technology Infrastructure Library
LCA Life cycle assessment
LEED Leadership in Energy and Environmental Design
MERV Minimum Efficiency Reporting Value
NT Network telecommunications
PDU Power distribution unit
PSU Power supply unit
PUE Power usage effectiveness
REF Renewable Energy Factor
SLA Service level agreement
SMASH Systems Management Architecture for Server Hardware
SNMP Simple network management protocol
SPEC Standard Performance Evaluation Corporation
UPS Uninterruptible power supply
4 Principles
4.1 General

Clauses 5 to 7 contain the full list of energy management Practices of this document.

Clause 5 contains those Practices that are considered “Expected Practices” of the CoC and which are

listed under the following situations (see Table 1 to Table 4):
a) existing data centres (example);
b) ICT equipment (new or replacement);
c) software install or upgrade;
d) new build or refurbishment of data centres.

Clause 6 contains those Practices that are considered as optional or alternative within the CoC

scheme (see Table 5 to Table 8).

Under each heading the recommended Practices of Clauses 5 and 6 are based upon the categories

described in 4.2 to 4.8.

Each practice has been assigned a qualitative value (1 to 5) to indicate the level of benefit to be

expected from its implementation and, therefore, the relative pri
...

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