CLC/TR 50600-99-1:2018

SLOVENSKI STANDARD
01-oktober-2018
1DGRPHãþD
SIST-TP CLC/TR 50600-99-1:2017
,QIRUPDFLMVNDWHKQRORJLMD1DSUDYHLQLQIUDVWUXNWXUDSRGDWNRYQLKFHQWURY
GHO3ULSRURþHQHSUDNVH]DXSUDYOMDQMH]HQHUJLMR
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 l'information - Installations et infrastructures de centres de traitement de
données - Partie 99-1 : Pratiques recommandées relatives à la gestion énergétique
Ta slovenski standard je istoveten z: CLC/TR 50600-99-1:2018
ICS:
27.015 (QHUJLMVNDXþLQNRYLWRVW Energy efficiency. Energy
2KUDQMDQMHHQHUJLMHQD conservation in general
VSORãQR
35.110 Omreževanje Networking
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL REPORT
CLC/TR 50600-99-1
RAPPORT TECHNIQUE
TECHNISCHER BERICHT
August 2018
ICS 35.020; 35.110; 35.160 Supersedes CLC/TR 50600-99-1:2017
English Version
Information technology - Data centre facilities and infrastructures
- Part 99-1: Recommended practices for energy management
Technologies de l'information - Installations et Informationstechnik - Einrichtungen und Infrastrukturen von
infrastructures de centres de traitement de données - Partie Rechenzentren - Teil 99-1: Empfohlene Praktiken für das
99-1 : Pratiques recommandées relatives à la gestion Energiemanagement
énergétique
This Technical Report was approved by CENELEC on 2018-06-26.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, 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
© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. CLC/TR 50600-99-1:2018 E

Contents Page
European foreword .4
Introduction .5
Figure 1 — Schematic relationship between the EN 50600 series of documents .6
1 Scope .8
2 Normative references .8
3 Terms, definitions and abbreviations .8
3.1 Terms and definitions .8
3.2 Abbreviations .11
4 Principles .12
4.1 General .12
4.2 Data centre utilization, management and planning .13
4.3 Data centre ICT equipment and services .13
4.4 Data centre cooling equipment .14
4.5 Data centre power equipment .15
4.6 Other data centre equipment .15
4.7 Data centre building .15
4.8 Data centre monitoring .16
5 Expected Practices .17
5.1 Existing data centres .17
5.2 ICT equipment (new or replacement) .22
5.3 Software install or upgrade .27
5.4 New build or refurbishment of data centres .28
6 Optional and alternative Practices .36
6.1 Existing data centres .36
6.2 ICT equipment (new or replacement) .42
6.3 Software install or upgrade .43
6.4 New build or refurbishment of data centres .44
7 Practices under consideration .48
7.1 Practices expected to be included in Clause 5 in due course .48
7.1.1 Existing data centres .48
7.1.2 ICT equipment (new or replacement) .48
7.1.3 Software install or upgrade .48
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) .48
7.2 Practices expected to be included in Clause 6 in due course .49
7.2.1 Existing data centres .49
7.2.2 ICT equipment (new or replacement) .49
7.2.3 Software install or upgrade .49
7.2.4 New build or refurbishment of data centres .49
Annex A (informative) Environmental classifications .50
A.1 ASHRAE classifications.50
Table A.1 — Equipment environmental specifications .50
A.2 ETSI EN 300 019-1-3 classifications .50
Table A.2 — Equipment environmental specifications .51
Bibliography .52

European foreword
This document (CLC/TR 50600-99-1:2018) 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).
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 supersedes CLC/TR 50600-99-1:2017.
CLC/TR 50600-99-1:2017 which it supersedes:
— by updating to recently agreed energy management practices and aligns with the 2018 edition of
the EU Code of Conduct for data centres Best Practices document.
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 Technical Report is intended to integrate recommended Practices of energy
management into the EN 50600 series developed by CLC/TC 215 and also to widen accessibility and
increase participation in the CoC scheme by ensuring translation of the Best Practices into multiple
languages.
This document has been prepared under a mandate given to CENELEC by the European Commission
and the European Free Trade Association.
Regarding the structure of the EN 50600 series, see the Introduction.
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 economic 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.
This 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, consultants, 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 Technical Report, 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
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;
CLC/TR 50600-99-1, Information technology — Data centre facilities and infrastructures — Part 99-1:
Recommended practices for energy management.
The inter-relationship of the documents within the EN 50600 series is shown in Figure 1.

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 Technical Report 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.
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
Technical Report are included in Clause 7. During the maintenance of this Technical Report, 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.18.yyy where x is the clause number, 18
refers to the 2018 publication of this document and yyy is a sequential number starting within each
clause. Also included is the CoC BP reference (as used in 2017) in order to provide an audit trail.
Future versions of this document will use these references to track changes in the Practices, provide a
historic record and to simplify translation of the document.
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 Technical Report that are implemented in a
data centre to assist in procurement of services that meet their environmental or sustainability
standards.
This Technical Report 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.
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. It is 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).
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 50600-1:2012, Information technology — Data centre facilities and infrastructures — Part 1:
General concepts
EN 50600-4-2, Information technology — Data centre facilities and infrastructures — Part 4-2: Power
Usage Effectiveness
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 http://www.iso.org/obp
3.1.1
aggregation
consolidation or combination of ICT equipment or services
3.1.2
airflow pathway
route taken by air to reach a specific point
3.1.3
albedo
diffuse reflectivity or reflecting power of a surface
3.1.4
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 50600-1:2012, 3.1.1]
3.1.5
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]
3.1.6
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 50600-1:2012, 3.1.6]
3.1.7
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 50600-1:2012, 3.1.7]
3.1.8
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.
3.1.9
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 utilisation 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.
3.1.10
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
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 50600-1:2012, 3.1.9 – modified: Note 2 to entry added]
3.1.11
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
3.1.12
energy efficiency
measure of the work done (as a result of design and/or operational procedures) for a given amount of
energy consumed
3.1.13
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.
3.1.14
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 50600-1:2012, 3.1.14]
3.1.15
grid (technology)
interconnection of ICT resources in multiple locations to achieve a common objective
3.1.16
hot aisle/cold aisle (system)
construction of cabinets and containment intended to prevent the mixing of ICT equipment intake and
exhaust air within computer room space(s)
3.1.17
information and communication technology (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.
3.1.18
insolation
total amount of solar radiation energy received on a given surface area during a given time
3.1.19
make-up air
air introduced into a data centre space to replace air that is exhausted through ventilation or
combustion processes
3.1.20
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
3.1.21
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]
3.1.22
resilience
capacity to withstand failure in one or more of the ICT equipment or data centre infrastructures
3.1.23
set-point
desired or target value (maximum or minimum) for either temperature or humidity
3.1.24
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
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
TM
SERT Server Efficiency Rating Tool
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 Technical Report.
Clause 5 contains those Practices that are considered “Expected Practices” of the CoC and which are
listed under the following situations:
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.
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 priorities that should be applied to it. A
value of 5 indicates the greatest benefit/priority.
These values are not intended to be totalled or aggregated to provide an overall ‘operator score’ and
should not be mistaken as being quantitative. This would require large scale data on the effects of
each practice or technology which is not yet available as well as a complex system of scoring
representing the combinational increase or reduction of individual practice values within that specific
facility.
Practices under consideration for inclusion in either Clauses 5 or 6 for the next or future
revision/amendment of this Technical Report are included in Clause 7. These Practices do not have a
qualitative value applied to them.
4.2 Data centre utilization, management and planning
It is important to develop a holistic strategy and management approach to the data centre in order to
ensure the required availability and effective delivery of economic and environmental benefits. The
sub-headings under this category are:
a) General policies:
These policies apply to all aspects of the data centre and its operation.
b) Resilience level and provisioning:
Two of the most significant sources of inefficiency in data centres are the over provisioning of
space, power or cooling or the facilities being run at less than full capacity. Monolithic, as opposed
to modular design of facilities also represents a significant and frequently unnecessary capital
expenditure. Further, as the level of resilience of the data centre increases the inefficiencies due
to fixed overheads increase and this is compounded by poor utilization.
c) Involvement of organizational groups:
Ineffective communication between the disciplines working in the data centre is a major driver of
inefficiency and can create issues of capacity management and reliability.
4.3 Data centre ICT equipment and services
The ICT equipment creates the demand for power and cooling in the data centre, any reductions in
power and cooling used by, or provisioned for, the ICT equipment will have magnified effects at the
utility energy supply.
The specifications of ICT equipment operating temperature and humidity ranges in this section do not
indicate that the computer room should be immediately operated at the upper bound of these ranges.
This is addressed under the category “Data centre cooling”. The purpose of the equipment
environmental specifications in 4.3 is to ensure that new equipment is capable of operating under the
wider ranges of temperature and humidity thus allowing greater flexibility in operating temperature and
humidity to the operator.
The sub-headings under this category are:
a) Selection and deployment of new ICT equipment:
Once ICT equipment is purchased and installed in the data centre it typically spends several years
in the data centre consuming power and creating heat. The appropriate selection of hardware and
deployment methods can provide significant long term savings.
b) Deployment of new ICT services:
The service architecture, software and deployment of ICT services have an impact at least as
great as that of the ICT equipment.
c) Management of existing ICT equipment and services:
It is common to focus on new services and equipment being installed into the data centre but there
are also substantial opportunities to achieve energy and cost reductions from within the existing
service and physical estate, for example, by decommissioning hardware no longer in use or
implementing energy saving policies.
d) Data management and storage:
Storage is a major growth area in both cost and energy consumption within the data centre. It is
generally recognized that a significant proportion of the data stored is unnecessary, duplicated or
does not require high performance access.
Some sectors have a particular issue due to very broad and non-specific data retention directives
from governments or regulating bodies which can cause large volumes of data to be unnecessarily
heavily protected and archived.
4.4 Data centre cooling equipment
A major part of the facility infrastructure is the cooling system.
Cooling of the data centre is frequently the largest energy loss in the facility and as such represents a
significant opportunity to reduce energy consumption.
The sub-headings under this category are:
a) Airflow management and design:
The objective of airflow management is to circulate only the amount of air through the data centre
that is necessary to remove the heat created by the ICT equipment (i.e. no air circulates
unnecessarily).
Poor airflow management often results in attempts to compensate by reducing air supply
temperatures or supplying excessive air volumes, which have an energy penalty.
Improving airflow management will deliver more uniform ICT equipment inlet temperatures and
are a prerequisite to increasing temperature set-points and reducing airflow volumes which enable
reductions in energy consumption without the risk of equipment overheating.
b) Cooling management:
The data centre is not a static system and the cooling systems should be tuned in response to
fluctuations in thermal load.
c) Temperature and humidity settings:
Operating overly restricted environmental controls (in particular, excessively cooled computer
rooms) results in an energy penalty.
Widening the set-point range for temperature and humidity can reduce energy consumption.
When reviewing environmental management issues it is recommended that expert advice should
be sought before changing the environmental range for the facility (e.g. before set-points are
changed) in order to avoid risks to operational integrity.
d) Selection of cooling system:
The cooling system typically represents a major part of the energy consumed in the data centre in
addition to the critical ICT load. This is also the area with the greatest variation in technologies.
Free and economized cooling:
Free or economized cooling designs use cool ambient conditions to meet part or all of the
facilities cooling requirements hence compressor work for cooling is reduced or removed,
which can result in significant energy reduction. Economized cooling can be retrofitted to
some facilities and should be considered in all new builds retrofits and upgrades.
High efficiency cooling system:
When refrigeration is used as part of the cooling system design high efficiency cooling system
should be selected. Designs should operate efficiently at system level and employ efficient
components. This demands an effective control strategy which optimizes efficient operation,
without compromising reliability. Even in designs where the refrigeration is expected to run for
very few hours per year the cost savings in infrastructure electrical capacity and utility power
availability or peak demand fees justify the selection of high efficiency equipment.
e) Computer Room Air Conditioner/Computer Room Air Handling (CRAC/CRAH) equipment:
These are major components of most cooling systems within the computer room; they are
frequently unable to provide efficient operation in older facilities.
f) Reuse of data centre waste heat:
Data centres produce significant quantities of waste heat. Whilst this is typically at a relatively low
temperature there are some applications for reuse of this energy which could offer economic and
environmental benefit. As ICT equipment utilization is increased through consolidation and
virtualization the exhaust temperature is likely to increase which will provide greater opportunity for
waste heat to be re-used. Direct liquid-cooled ICT equipment is likely to provide a further
improvement in the ability to use waste heat.
4.5 Data centre power equipment
Another major part of the facility infrastructure is the power conditioning and delivery system. This
normally includes uninterruptible power supplies (UPS), power distribution units (PDU), cabling and
can also include other equipment e.g. backup generators and static switches.
The sub-headings under this category are:
a) Selection and deployment of new power equipment:
Power delivery equipment has a substantial impact upon the efficiency of the data centre and
tends to stay in operation for many years once installed. Careful selection of the power equipment
at design time can deliver substantial savings through the lifetime of the facility.
b) Management of existing power equipment.
4.6 Other data centre equipment
Data centre spaces contain equipment other than that of 4.3, 4.4 and 4.5. Practices should be
employed to minimize energy consumption and/or improve energy efficiency of such equipment and
should be optimized based on relevant building standards, such as relevant EU standards, LEED,
BREEAM, etc.
The sub-heading under this category is:
a) General Practices:
These general Practices apply to all data centre spaces.
4.7 Data centre building
The location and physical layout of the data centre premises is important to achieving flexibility and
efficiency.
The sub-headings under this category are:
a) Building physical layout:
The physical layout of the building can present fundamental constraints on the applicable
technologies and achievable efficiencies (e.g. technologies such as fresh air cooling require
significant space for equipment and distribution systems that might not be available in an existing
building).
b) Building geographic location:
The geographic location for a data centre can impact achievable efficiency, primarily through the
influence of external climate.
c) Water sources:
Data centres might use a significant quantity of water to provide environmental control. The type
and source of water might affect the energy consumption.
4.8 Data centre monitoring
The development and implementation of a monitoring and reporting strategy is key to managing the
efficiency of a data centre.
The sub-headings under this category are:
a) Energy consumption and environmental measurement:
Many data centres currently have little or no monitoring of energy consumption or environmental
conditions; some do not have separate utility metering or billing.
The ability to measure energy use and factors impacting energy use is a prerequisite to identifying
and justifying improvements. It should also be noted that measurement and reporting of a
parameter can also include alarms and exceptions if that parameter passes outside of the
acceptable or expected operating range.
b) Energy consumption and environmental data collection and logging:
Once data on energy consumption and environmental (temperature and humidity) conditions is
available through the installation of measurement devices it should be collected and logged.
c) Energy consumption and environmental reporting:
Energy consumption and environmental (temperature and humidity) condition data needs to be
reported to be of use in managing the energy efficiency of the facility.
d) ICT reporting:
Utilization of the ICT equipment is a key factor in optimizing the energy efficiency of the data
centre.
5 Expected Practices
5.1 Existing data centres
Index CoC Task set Description Value
v. 9.1.0
Index
UTILIZATION, MANAGEMENT AND PLANNING: Involvement of organizational groups
5.18.01 3.1.1 Group Establish a group containing representatives from all 5
involvement disciplines (software, ICT equipment, mechanical, electrical
and procurement) for the approval of any significant decision
to ensure that the impacts of the decision have been
properly understood and an effective solution reached.
NOTE For example, this could include the definition of
standard ICT equipment lists by considering the mechanical
and electrical implications of different types of hardware.
This group could be seen as the functional equivalent of a
change board.
UTILIZATION, MANAGEMENT AND PLANNING: General policies
5.18.02 3.2.1 Consider the Audit the existing equipment to maximize any unused 3
embodied capability by ensuring that all areas of optimization and
energy in consolidation are identified prior to new material investment.
devices The most important element to this in terms of impact is the
ICT equipment and the severity of impact is related to the
frequency of refresh and replacement.
NOTE Industry is beginning to use the term “embodied
impact” in place of “embodied energy”.
5.18.03 3.2.5 Environmental Implement a plan for environmental management in 3
Management accordance with emerging EU guidelines and internationally

standardized methodologies.
NOTE EN ISO 14001 is an example of a standardized
methodology.
5.18.04 3.2.6 Energy Implement a plan for energy management in accordance 3
Management with emerging EU guidelines and internationally

standardized methodologies.
NOTE EN ISO 50001 is an example of a standardized
methodology.
5.18.05 3.2.8 Sustainable Consider the proportion of energy used by the data centre 1
energy usage that comes from renewable / sustainable sources.

Recording and reporting on the proportion of sustainable /
renewable energy used against the overall energy
consumption is expected to become an expected monitoring
and reporting requirement in time.
NOTE Standardized metrics in this area are available as
EN 50600–4–3 which specifies the “Renewable Energy
Factor, REF” as the ratio of the renewable energy (in kWh)
to the total energy consumption (in kWh).
ICT EQUIPMENT AND SERVICES: Management of existing ICT equipment and services
5.18.06 4.3.1 Audit existing Audit the existing physical estate to establish what ICT 5
physical estate equipment is in place and what service(s) it delivers.
and services
Consider the implementation of an ITIL type Configuration
Management Database and Service Catalogue in
accordance with the ISO/IEC 20000 series.
5.18.07 4.3.2 Decommission Decommission and remove any ICT equipment supporting 5
and remove unused services.
unused
equipment
5.18.08 4.3.8 Audit of existing Identify the allowable intake temperature and humidity 4
ICT ranges for existing installed ICT equipment.
environmental
Identify ICT equipment with restrictive intake temperature
requirements
ranges so that it can be either:
• marked for replacement as soon as is practicable with
equipment capable of a wider intake range or
• moved and dealt with as per Practices “Equipment
segregation” Practice 5.18.13 and “Separate
environmental zones” Practice 5.18.58.
The specification of wider operating humidity and
temperature ranges for the computer room should be
performed in conjunction with changes in ICT equipment
procurement policy. Over time, ICT equipment with narrow
environmental operating ranges should be replaced.
ICT EQUIPMENT AND SERVICES: Data management and storage
5.18.09 4.4.1 Data Develop a data management policy to define what data 3
management should be kept, for how long and at what level of protection
policy taking care to understand the impact of any data retention
requirements.
Implement the policy by communication and enforcement by
those responsible.
DATA CENTRE COOLING: Airflow management and design
5.18.10 5.1.4 Cabinet/rack Install blanking plates in locations within cabinets/racks 4
airflow where there is no equipment.
management –
NOTE This helps to minimize the waste heat from one
Blanking Plates
device contaminating the intake air of another device (re-
circulation) which reduces cooling efficiency.
5.18.11 5.1.7 Raised floor Review placement and opening percentages of vented tiles 3
airflow to ensure appropriate airflow volume to ICT equi
...