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BSI PD ISO/IEC TR 23951:2020

BSI PD ISO/IEC TR 23951:2020

$167.15

Information technology. Cloud computing. Guidance for using the cloud SLA metric model

Published By Publication Date Number of Pages
BSI 2020 44
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The scope of this document is to describe guidance for using the ISO/IEC 19086‑2 metric model, illustrated with examples.

PDF Catalog

PDF Pages PDF Title
2 undefined
7 Foreword
8 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
10 5 Structure of this document
6 Motivation
6.1 Preamble
6.2 Audience and some user categories
6.2.1 General
11 6.2.2 Cloud service customer (CSC)
6.2.3 Cloud service provider (CSP)
6.2.4 Cloud service partner (CSN)
12 6.2.5 Regulators and policy makers
6.3 Usage patterns
6.3.1 General
6.3.2 Extract and clarify an existing metric description from an SLA
6.3.3 Create and share a metric description
13 6.3.4 Compare metric descriptions
6.3.5 Share a common foundation for a set of metrics
6.3.6 Build a metrics catalogue
6.4 Examples of scenarios and roles involved in sharing metric definitions
14 7 The metric model in practice: templates
7.1 A brief reminder of the metric model
15 7.2 A tabular representation
7.2.1 General
16 7.2.2 The tabular representation for the Metric element
17 7.2.3 The tabular representation for the Expression elements
18 7.2.4 The tabular representation for the Rule elements
19 7.2.5 The tabular representation for the Parameter elements
8 An example of metric definition: the cloud service mean response time metric
8.1 The cloud service mean response time metric: informal variant
8.1.1 Extracting metric elements from an SLA narrative
20 8.1.2 Using the tabular representation
22 8.1.3 Overall structure of the metric
8.2 The cloud service mean response time metric: more formal variant
8.2.1 A more formal variant of the metric
23 8.2.2 Adding a parameter
8.2.3 The metric rules
8.2.4 The metric expressions
25 8.2.5 Overall structure of the metric
8.2.6 Using constants
27 9 Guidelines for using the metric model with the tabular representation
9.1 General
28 9.2 Guideline 1 about defining expression and rule languages
9.3 Guideline 2 about associating rules with expressions
9.4 Guideline 3 about relating expressions to each other
29 9.5 Guideline 4 about the identifiers of metric elements
9.6 Guideline 5 about rules specifically designed to support an expression
9.7 Guideline 6 about the role of parameters
30 9.8 Guideline 7 about representing constants
10 The simple cloud service availability metric
10.1 Measuring cloud service availability
10.1.1 General
31 10.1.2 Overall design approach
10.1.3 SLA rules and metric rules
32 10.2 The simple cloud service availability metric variant Simple_SAM_1
10.2.1 The Metric element
10.2.2 The metric rules
33 10.2.3 The metric expressions
35 10.2.4 The metric parameters
10.2.5 Overall structure of the metric
36 10.3 The simple cloud service availability metric variant Simple_SAM_2
10.3.1 Differences in metric design and assumptions
37 10.3.2 The Metric element
10.3.3 The metric rules
38 10.3.4 The metric parameters
39 10.3.5 The metric expressions
40 10.3.6 Overall structure of the metric
10.3.7 An alternative metric design using the Configuration element option
42 Bibliography

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BSI PD ISO/IEC TR 23951:2020
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