1、Information technology Power efficiency measurement specification for data center storageINTERNATIONAL STANDARDISO/IEC24091Reference numberISO/IEC 24091:2019(E)First edition2019-11 ISO/IEC 2019 ISO/IEC 24091:2019(E)ii ISO/IEC 2019 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO/IEC 2019All right
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9、ature of standards,the meaning of ISO specific terms and expressions related to conformity assessment,as well as information about ISOs adherence to the World Trade Organization(WTO)principles in the Technical Barriers to Trade(TBT)see www.iso.org/iso/foreword.html.This document was prepared by SNIA
10、(as SNIA Emerald Power Efficiency Measurement Specification V3.0.3)and drafted in accordance with its editorial rules.It was adopted,under the JTC 1 PAS procedure,by Joint Technical Committee ISO/IEC JTC 1,Information technology.Any feedback or questions on this document should be directed to the us
11、ers national standards body.A complete listing of these bodies can be found at www.iso.org/members.html.ISO/IEC 24091:2019(E)ISO/IEC 2019 All rights reservediiiContents 1 Introduction.vii 2 Scope.1 2.1 Abstract.1 2.2 Introduction.1 2.3 Current Revision.1 2.4 Purpose.1 2.5 Disclaimer.2 3 Normative Re
12、ferences.3 4 Definitions,Symbols,Abbreviations,and Conventions.4 4.1 Overview.4 4.2 Definitions.4 4.3 Symbols and Abbreviated Terms.9 4.4 Expression of Provisions.9 4.5 Conventions.10 5 Taxonomy.11 5.1 Introduction.11 5.2 Taxonomy Categories.12 5.3 Taxonomy Classifications.12 5.4 Taxonomy Rules.12 5
13、.5 Online Category.13 5.6 Near-Online Category.15 5.7 Removable Media Library Category.15 5.8 Virtual Media Library Category.16 6 Capacity Optimization.17 6.1 Introduction.17 6.2 Space Consuming Practices.17 6.3 COMs Characterized.17 7 Test Definition and Execution Rules.18 7.1 Overview.18 7.2 Gener
14、al Requirements and Definitions.18 7.3 Block Access Online and Near-Online Tests.30 7.4 File Access Online and Near-Online Active Test.33 7.5 Block and File Access Ready Idle Test.37 7.6 Block and File Access Capacity Optimization Test.37 7.7 Removable Media Library Testing.42 7.8 Virtual Media Libr
15、ary Testing.46 ISO/IEC 24091:2019(E)ISO/IEC 2019 All rights reservediv 8 Metrics.50 8.1 Taxonomy Considerations.50 8.2 Block Access Primary Metrics.50 8.3 File Access Primary Metrics.50 8.4 Power Efficiency Metric for Online and Near-Online Systems.50 8.5 Power Efficiency Metric for Removable Media
16、Library Systems.52 8.6 Storage Power Efficiency Metric for Virtual Media Library Systems.52 8.7 Secondary Metrics.52 9 Disclosure Requirements.54 9.1 General.54 9.2 Product Identification.54 9.3 Test Metrics.54 9.4 Test Characterization.56 9.5 Product Under Test Description.57 Annex A(Normative)Suggested Power and Environmental Meters.59 A.1 Overview.59 A.2 Alternate Meter Usage.59 Annex B(Normative)Measurement Requirements.60 B.1 Online and Near-Online Block Access Data Collection and Processin