ETSI TS 105 174-2 V1.3.1 (2020-01)

ETSI TS 105 174-2 V1.3.1 (2020-01)






TECHNICAL SPECIFICATION
Access, Terminals, Transmission and Multiplexing (ATTM);
Broadband Deployment and Lifecycle Resource Management;
Part 2: ICT Sites: Implementation of energy and lifecycle
management practices

---------------------- Page: 1 ----------------------
2 ETSI TS 105 174-2 V1.3.1 (2020-01)



Reference
RTS/ATTM-0250
Keywords
broadband, energy management, ICT,
sustainability
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2020.
All rights reserved.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and
of the oneM2M Partners.
®
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI

---------------------- Page: 2 ----------------------
3 ETSI TS 105 174-2 V1.3.1 (2020-01)
Contents
Intellectual Property Rights . 9
Foreword . 9
Modal verbs terminology . 9
Introduction . 10
1 Scope . 11
2 References . 11
2.1 Normative references . 11
2.2 Informative references . 12
3 Definition of terms, symbols and abbreviations . 14
3.1 Terms . 14
3.2 Symbols . 14
3.3 Abbreviations . 14
4 Applicability of the present document . 15
4.1 Introduction to CLC/TR 50600-99-1 . 15
4.2 ICT sites . 15
4.3 Other Network Distribution Nodes (NDNs) . 15
5 Mapping ETSI EN 305 174-2 to CLC/TR 50600-99-1 . 16
5.1 General . 16
5.2 Power supply and distribution . 16
5.2.1 Design aspects . 16
5.2.2 Operational aspects . 16
5.3 Environmental control . 17
5.3.1 Design aspects . 17
5.3.2 Operational aspects . 18
5.4 ICT equipment and software . 18
5.4.1 Design aspects . 18
5.4.2 Operational aspects . 18
5.5 Other practices of CLC/TR 50600-99-1 . 19
6 Construction recommendations . 19
6.1 General . 19
6.2 Design practices . 20
6.2.1 Location of ICT sites . 20
6.2.1.1 Selection criteria . 20
6.2.1.2 Environment . 20
6.2.1.3 Power: sources of supply . 21
6.2.1.4 Environmental control: sources of coolant . 22
6.2.1.5 Reuse of energy . 22
6.2.2 Structure and configuration of ICT sites . 23
6.2.2.1 General . 23
6.2.2.2 Infrastructure supporting ICT equipment . 24
6.3 Operational practices . 25
7 Power distribution recommendations . 25
7.1 General . 25
7.2 Design practices . 25
7.2.1 Overview . 25
7.2.2 Uninterruptible power systems (UPS) . 26
7.2.2.1 Efficiency . 26
7.2.2.2 Traditional UP S . 28
7.2.2.3 Modular UPS. 28
7.2.2.4 UPS in combination . 28
7.2.3 -48 VDC power solutions . 29
7.2.4 High efficiency distribution and power equipment . 29
ETSI

---------------------- Page: 3 ----------------------
4 ETSI TS 105 174-2 V1.3.1 (2020-01)
7.2.5 Migrating to 400 VDC . 30
7.2.5.1 General . 30
7.2.5.2 400 VDC versus AC. 30
7.2.5.3 Earthing and Bonding . 31
7.3 Operational practices . 31
7.3.1 Measurement, monitoring and reporting . 31
7.3.1.1 Measurement of energy efficiency of existing equipment . 31
7.3.1.2 Energy capacity management. 32
7.3.2 Maintenance . 32
7.4 Example outcomes . 32
8 Environmental control recommendations. 33
8.1 General . 33
8.2 Design practices . 33
8.2.1 Overview . 33
8.2.2 Overview . 34
8.2.2.1 Thermal segregation . 34
8.2.2.1.1 Basic "hot aisle - cold aisle" concepts . 34
8.2.2.1.2 "Pod" concepts . 35
8.2.2.2 Airflow management in cabinets/racks . 36
8.2.3 "Free cooling" . 37
8.2.3.1 General . 37
8.2.3.2 Direct air free cooling . 38
8.2.3.3 Indirect air free cooling . 38
8.2.3.4 Indirect water free cooling . 39
8.2.3.5 Absorption free cooling . 39
8.2.3.6 Adiabatic cooling . 39
8.2.4 Direct cooling . 39
8.2.4.1 Cooling-on-the-chip . 39
8.2.4.2 Liquid cooling . 40
8.2.4.2.1 Direct water free cooling (Cooling-on-the-rack) . 40
8.2.4.2.2 Liquid submersion cooling (oil cooling) . 40
8.2.5 Enhancements of cooling systems . 40
8.3 Operational practices . 41
8.3.1 General . 41
8.3.2 Temperature and humidity settings . 42
8.3.3 Environment control equipment . 43
8.3.4 Air flow in cabinets/racks . 43
8.3.5 Measurement, monitoring and reporting . 43
8.3.5.1 Energy . 43
8.3.5.2 Air quality . 45
8.3.6 Maintenance . 45
8.4 Example outcomes . 45
8.4.1 General . 45
8.4.2 Free cooling . 46
8.4.3 Temperature and humidity settings . 47
8.4.3.1 Energy consumption. 47
8.4.3.2 Time to "system shut-down" . 48
8.4.3.3 Restrictions on implementation . 49
9 ICT equipment and cabling infrastructure recommendations . 49
9.1 General . 49
9.2 Design practices . 50
9.2.1 Auditing the ICT estate . 50
9.2.2 Obsolete ICT equipment . 50
9.2.3 Selection of new ICT equipment . 51
9.2.4 Installation of new ICT equipment . 53
9.2.5 Software . 53
9.3 Operational practices . 53
9.3.1 Energy management . 53
9.3.2 Power management . 54
9.3.2.1 Activation of basic power management features. 54
ETSI

---------------------- Page: 4 ----------------------
5 ETSI TS 105 174-2 V1.3.1 (2020-01)
9.3.2.2 Activation of "sleep" mode . 55
9.3.3 Capacity management . 55
9.3.3.1 General . 55
9.3.3.2 Environmental capacity management . 56
9.3.3.3 Storage capacity management . 57
9.3.3.4 Server capacity management . 57
9.3.3.5 Network capacity management . 57
9.3.3.6 On-demand scalability for on-line business . 58
9.3.4 Server consolidation . 58
9.3.4.1 Consolidation of servers . 58
9.3.4.2 Virtualization . 58
9.3.4.3 Physical consolidation . 59
9.3.5 Measurement, monitoring and reporting . 59
9.4 Example outcomes . 59
9.4.1 General . 59
9.4.2 Power management . 60
9.4.2.1 Activation of "sleep" mode . 60
9.4.3 Server consolidation . 60
9.4.3.1 Virtualization . 60
10 Mapping of ETSI EN 305 174-8 to CLC/TR 50600-99-2 . 61
10.1 ETSI EN 305 174-8 and ETSI TS 105 174-8 . 61
10.2 Practices of CLC/TR 50600-99-2 . 62
10.3 Eco-management and sustainability . 63
10.3.1 Eco-design . 63
10.3.2 LCA . 63
10.3.3 Energy management . 64
Annex A (informative): ICT site Availability Classes . 65
Annex B (informative): Historic issues in ICT sites . 66
Annex C (informative): The application of energy management metrics . 67
Annex D (informative): Bibliography . 68
Annex E (informative): Change History . 69
History . 70


ETSI

---------------------- Page: 5 ----------------------
6 ETSI TS 105 174-2 V1.3.1 (2020-01)
List of figures
Figure 1: Example of complex power distribution on an ICT site .26
Figure 2: Multi-vendor AC UPS technologies .27
Figure 3: UPS efficiency .27
Figure 4: Example of modular in-line UPS technology .29
Figure 5: Hot aisle - cold aisle approach .34
Figure 6: Hot aisle - cold aisle approach with improved containment .34
Figure 7: The "pod" concept .35
Figure 8: Graphical representation of Table 34 .47
Figure 9: Example showing effect of operating temperature on "time to system shut-down" .49
Figure 10: Server schedules .55
Figure 11: Capacity management .56
Figure 12: Physical consolidation and virtualization .59
Figure 13: Energy savings from virtualization .61


ETSI

---------------------- Page: 6 ----------------------
7 ETSI TS 105 174-2 V1.3.1 (2020-01)
List of tables
Table 1: ETSI EN 305 174-2 [3] requirements for power supply and distribution design .16
Table 2: ETSI EN 305 174-2 [3] requirements for power supply and distribution operation .17
Table 3: ETSI EN 305 174-2 [3] requirements for environmental control design .17
Table 4: ETSI EN 305 174-2 [3] requirements for environmental control operation .18
Table 5: ETSI EN 305 174-2 [3] requirements for ICT equipment operation .18
Table 6: Example of theme-based analysis of ICT site selection .20
Table 7: CLC/TR 50600-99-1 [1] practices addressing environmental aspects of ICT site selection .21
Table 8: CLC/TR 50600-99-1 [1] practices addressing power source aspects of ICT site selection .21
Table 9: Types of local power sources .22
Table 10: CLC/TR 50600-99-1 [1] practices addressing coolant source aspects of ICT site selection .22
Table 11: CLC/TR 50600-99-1 [1] practices addressing energy reuse aspects of ICT site selection.23
Table 12: CLC/TR 50600-99-1 [1] practices addressing ICT site structure and configuration .24
Table 13: CLC/TR 50600-99-1 [1] practices addressing ICT infrastructure .25
Table 14: CLC/TR 50600-99-1 [1] practices addressing ICT site operation .25
Table 15: CLC/TR 506
...