CLC/TS 50600-4-31:2024

SLOVENSKI STANDARD
01-junij-2024
Informacijska tehnologija - Naprave in infrastruktura podatkovnega centra - 4-31.
del: Ključni kazalniki uspešnosti za odpornost
Information technology - Data centre facilities and infrastructures - Part 4-31: Key
performance indicators for Resilience
Informationstechnik - Einrichtungen und Infrastrukturen von Rechenzentren - Teil 4-31:
Leistungskennzahlen für die Ausfallsicherheit
Technologie de l’information - Installation et infrastructures de centres de traitement de
données - Partie 4-31: Indicateurs-clés de performance pour la résilience
Ta slovenski standard je istoveten z: CLC/FprTS 50600-4-31:2024
ICS:
35.020 Informacijska tehnika in Information technology (IT) in
tehnologija na splošno general
35.110 Omreževanje Networking
35.160 Mikroprocesorski sistemi Microprocessor systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL SPECIFICATION FINAL DRAFT
CLC/FprTS 50600-4-31
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
May 2024
ICS 35.020; 35.110; 35.160 -
English Version
Information technology - Data centre facilities and infrastructures
- Part 4-31: Key performance indicators for Resilience
Technologie de l'information - Installation et infrastructures Informationstechnik - Einrichtungen und Infrastrukturen von
de centres de traitement de données - Partie 4-31: Rechenzentren - Teil 4-31: Leistungskennzahlen für die
Indicateurs-clés de performance pour la résilience Ausfallsicherheit
This draft Technical Specification is submitted to CENELEC members for vote by correspondence.
Deadline for CENELEC: 2024-07-26.

It has been drawn up by CLC/TC 215.

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,
Türkiye and the United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.

Warning : This document is not a Technical Specification. It is distributed for review and comments. It is subject to change without notice
and shall not be referred to a Technical Specification.

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
© 2024 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Project: 78173 Ref. No. CLC/FprTS 50600-4-31:2024 E

CLC/FprTS 50600-4-31:2024 (E)
1 Contents Page
2 European Foreword . 3
3 Introduction . 4
4 1 Scope . 7
5 2 Normative references . 7
6 3 Terms, Definitions, Abbreviations and Symbols . 7
7 3.1 Terms and Definitions . 7
8 3.2 Abbreviations .12
9 3.3 Symbols .12
10 4 Area application . 14
11 4.1 General .14
12 4.2 DCI service definition .14
13 5 Resilience considerations as part of the life cycle . 15
14 5.1 Implementation in the design process .15
15 5.2 Documentation during operation .17
16 5.3 Documentation of resilience level .17
17 5.4 Documentation of dependability .17
18 5.5 Documentation of fault tolerance .18
19 5.6 Documentation of availability tolerance .18
20 6 Determination of KPIs for resilience . 18
21 6.1 General .18
22 6.2 Structuring of the KPIs for resilience .19
23 6.3 Dependability .21
24 6.4 Fault tolerance .25
25 6.5 Availability tolerance .26
26 6.6 Resilience level .27
27 6.7 Application to data centre infrastructures .30
28 Annex A (informative) Failure Mode Effects and Criticality Analysis . 33
29 Annex B (informative) Dependability data . 35
30 Annex C (informative) Resilience analysis for data centre infrastructures . 52
31 Annex D (informative) SPoF Analysis for DCIs . 57
32 Annex E (informative) Resilience level analysis for DCIs . 61
33 Annex F (informative) Interval of confidence . 63
34 F.1 Overview. 63
35 F.2 Estimation of the mean failure rate . 63
36 F.3 Estimation of the boundaries of the failure rate . 63
37 F.4 Case when no failure has appeared . 64
38 F.4.1 General . 64
39 F.4.2 Example 1 . 64
40 F.4.3 Example 2 . 65
41 Bibliography . 66
CLC/FprTS 50600-4-31:2024 (E)
42 European foreword
43 This document (CLC/FprTS 50600-4-31:2023) has been prepared by CLC/TC 215, “Electrotechnical aspects of
44 telecommunication equipment”.
45 This document is currently submitted to voting in accordance with the Internal Regulations, Part 2, Subclause
46 11.3.3 for acceptance as a CENELEC Technical Specification.
47 The following date is proposed:
• latest date by which the existence of this (doa) dor + 6 months
document has to be announced at national
level
48 This document is based on ISO/IEC TS 22237-31:2023.
49 This document has been prepared under a standardization request addressed to CENELEC by the European
50 Commission. The Standing Committee of the EFTA States subsequently approves these requests for its
51 Member States.
CLC/FprTS 50600-4-31:2024 (E)
52 Introduction
53 The unrestricted access to internet-based information demanded by the information society has led to an
54 exponential growth of both internet traffic and the volume of stored/retrieved data. Data centres are housing and
55 supporting the information technology and network telecommunications equipment for data processing, data
56 storage and data transport. They are required both by network operators (delivering those services to customer
57 premises) and by enterprises within those customer premises.
58 Data centres usually provide modular, scalable and flexible facilities and infrastructures to easily accommodate
59 the rapidly changing requirements of the market. In addition, energy consumption of data centres has become
60 critical both from an environmental point of view (reduction of environmental footprint) and with respect to
61 economical considerations (cost of energy) for the data centre operator.
62 The implementation of data centres varies in terms of:
63 a) purpose (enterprise, co-location, co-hosting or network operator facilities);
64 b) security level;
65 c) physical size;
66 d) accommodation (mobile, temporary and permanent constructions).
67 The needs of data centres also vary in terms of availability of service, the provision of security and the objectives
68 for energy efficiency. These needs and objectives influence the design of data centres in terms of building
69 construction, power distribution, environmental control, telecommunications cabling and physical security as
70 well as the operation of the data centre. Effective management and operational information are important in
71 order to monitor achievement of the defined needs and objectives.
72 Recognizing the substantial resource consumption, particularly of energy, of larger data centres, it is also
73 important to provide tools for the assessment of that consumption both in terms of overall value and of source
74 mix and to provide Key Performance Indicators (KPIs) to evaluate trends and drive performance improvements.
75 At the time of publication of this document, the EN 50600 series is designed as a framework of standards,
76 technical specifications and technical reports covering the design, the operation and management, the key
77 performance indicators for energy efficient operation of the data centre as well as a data centre maturity model.
78 The EN 50600-2 series defines the requirements for the data centre design.
79 The EN 50600-3 series defines the requirements for the operation and the management of the data centre.
80 The EN 50600-4 series defines the key performance indicators for the data centre.
81 The CLC/TS 50600-5 series defines the data centre maturity model requirements and recommendations.
82 The CLC/TR 50600-99-X Technical Reports cover recommended practices and guidance for specific topics
83 around data centre operation and design.
84 This series of documents specifies requirements and recommendations to support the various parties involved
85 in the design, planning, procurement, integration, installation, operation and maintenance of facilities and
86 infrastructures within data centres. These parties include:
87 1) owners, operators, facility managers, ICT managers, project managers, main contractors;
88 2) consulting engineers, architects, building designers and builders, system and installation designers,
89 auditors, test and commissioning agents;
90 3) facility and infrastructure integrators, suppliers of equipment;
91 4) installers, maintainers.
92 At the time of publication of this document, the EN 50600-4 series comprises the following documents:
93 — EN 50600-4-1, Information technology — Data centre facilities and infrastructures — Part 4-1: Overview of
94 and general requirements for key performance indicators
CLC/FprTS 50600-4-31:2024 (E)
95 — EN 50600-4-2, Information technology — Data centre facilities and infrastructures — Part 4-2: Power
96 Usage Effectiveness
97 — EN 50600-4-3, Information technology — Data centre facilities and infrastructures — Part 4-3: Renewable
98 Energy Factor;
99 — EN 50600-4-6, Information technology — Data centre facilities and infrastructures — Part 4-6: Energy
100 Reuse Factor;
101 — EN 50600-4-7, Information technology — Data centre facilities and infrastructures — Part 4-7: Cooling
102 Efficiency Ratio;
103 — EN 50600-4-8, Information technology — Data centre facilities and infrastructures — Part 4-8: Carbon
104 Usage Effectiveness;
105 — EN 50600-4-9, Information technology — Data centre facilities and infrastructures — Part 4-9: Water
106 Usage Effectiveness.
107 The inter-relationship of the documents within the EN 50600 series is shown in Figure 1.
109 Figure 1 — Schematic relationship between the EN 50600 series documents
110 EN 50600-2-X documents specify requirements and recommendations for part
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