BSI PD ISO/IEC TS 22237-31:2023:2024 Edition

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Information technology. Data centre facilities and infrastructures – Key performance indicators for resilience

Published By	Publication Date	Number of Pages
BSI	2024	52

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PDF Catalog

PDF Pages	PDF Title
2	undefined
7	Foreword
8	Introduction
9	1 Scope 2 Normative references 3 Terms and definitions 3.1 Terms and definitions
14	3.2 Symbols and abbreviated terms 3.2.1 Symbols
15	3.2.2 Abbreviated terms
16	4 Area of application 4.1 General 4.2 DCI service definition
17	5 Resilience considerations as part of the life cycle 5.1 Implementation in the design process 5.1.1 General 5.1.2 Phase 1 — Strategy
18	5.1.3 Phase 2 — Objectives 5.1.4 Phase 3 — System specifications 5.1.5 Phase 4 — Design proposal 5.1.6 Phase 6 — Functional design 5.1.7 Phase 8 — Final design and project plan
19	5.1.8 Phase 10 — Construction 5.1.9 Phase 11 — Operation 5.2 Documentation during operation 5.2.1 General 5.3 Documentation of resilience level 5.3.1 General
20	5.3.2 Requirements 5.4 Documentation of dependability 5.4.1 Requirements 5.4.2 Recommendations 5.5 Documentation of fault tolerance 5.5.1 Requirements 5.6 Documentation of availability tolerance 5.6.1 Requirements
21	5.6.2 Recommendations 6 Determination of KPIs for resilience 6.1 General 6.2 Structuring of the KPIs for resilience 6.2.1 General
22	6.2.2 KPIs
23	6.2.3 Failure rate 6.2.4 Metrics
24	6.3 Dependability 6.3.1 Provided KPIs
25	6.3.2 Reliability
26	6.3.3 Availability
27	6.3.4 Failure rate
28	6.4 Fault tolerance 6.4.1 General 6.4.2 Single point of failure (SPoF) 6.4.3 Double point of failure (DPoF)
29	6.5 Availability tolerance 6.5.1 General 6.5.2 Single point of reduced availability (SPoRA) 6.5.3 Double point of reduced availability (DPoRA)
30	6.6 Resilience level (RL) 6.6.1 General 6.6.2 Operation at normal resilience level
31	6.6.3 Operation at reduced resilience level
32	6.7 Application to data centre infrastructures 6.7.1 Methodology and analysis considerations
33	6.7.2 Analysis process
34	6.7.3 Method of reliability block diagrams (RBD) 6.7.4 Method of Failure Mode Effects and Criticality Analysis
36	Annex A (informative) Resilience analysis for DCIs
41	Annex B (informative) SPoF Analysis for DCIs
44	Annex C (informative) Resilience level analysis for DCIs
46	Annex D (informative) Example of Failure Mode Effects and Criticality Analysis
48	Annex E (informative) Interval of confidence
51	Bibliography