1、BSI Standards Publication BS ISO/IEC 30134-2:2016 Information technology Data centres Key performance indicators Part 2: Power usage effectiveness (PUE)BS ISO/IEC 30134-2:2016 BRITISH STANDARD National foreword This British Standard is the UK implementation of ISO/IEC 30134-2:2016. The UK participat
2、ion in its preparation was entrusted to Technical Committee IST/46, Sustainability for, and by IT. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are res
3、ponsible for its correct application. The British Standards Institution 2016. Published by BSI Standards Limited 2016 ISBN 978 0 580 84342 6 ICS 35.020 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Sta
4、ndards Policy and Strategy Committee on 30 April 2016. Amendments/corrigenda issued since publication Date T e x t a f f e c t e dBS ISO/IEC 30134-2:2016 Information technology Data centres Key performance indicators Part 2: Power usage effectiveness (PUE) Technologies de linformation Centres de don
5、nes Indicateurs de performance cls Partie 2: Efficacit dans lutilisation de la puissance (PUE) INTERNATIONAL STANDARD ISO/IEC 30134-2 Reference number ISO/IEC 30134-2:2016(E) First edition 2016-04-15 ISO/IEC 2016 BS ISO/IEC 30134-2:2016ii ISO/IEC 2016 All rights reserved COPYRIGHT PROTECTED DOCUMENT
6、 ISO/IEC 2016, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written
7、 permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyrightiso.org www.iso.org ISO/IEC 3013
8、4-2:2016(E)BS ISO/IEC 30134-2:2016ISO/IEC 30134-2:2016(E)Foreword iv Introduction v 1 Scope . 1 2 Normative references 1 3 T erms, definitions, abbr e viat ed t erms and s ymbols . 1 3.1 Terms and definitions . 1 3.2 Abbreviated terms . 2 3.3 Symbols . 2 4 A pplicable ar eas of the data c entr e . 3
9、 5 Determination of power usage effectiveness (PUE) 3 6 Measurement of power usage effectiveness 4 6.1 Measuring energy consumption 4 6.1.1 General 4 6.1.2 Measurement period and frequency 4 6.1.3 Meter and measurement requirements . 4 6.2 Categories of power usage effectiveness 5 6.2.1 General 5 6.
10、2.2 Category 1 (PUE 1 ) Basic resolution . 5 6.2.3 Category 2 (PUE 2 ) Intermediate resolution 5 6.2.4 Category 3 (PUE 3 ) Advanced resolution 6 6.2.5 Measurement placement 6 7 Reporting of power usage effectiveness . 6 7.1 Requirements . 6 7.1.1 Standard construct for communicating PUE data . 6 7.1
11、.2 Example of reporting PUE values 6 7.1.3 Data for public reporting of PUE 6 7.2 Recommendations . 7 7.2.1 Use of PUE category 7 7.2.2 Trend tracking data . 7 Annex A (normative) Energy measurements. 9 Annex B (normative) Calculation of PUE using various energy supplies 11 Annex C (normative) PUE d
12、erivatives .16 Annex D (informative) Interpretation of PUE and its derivatives .23 Bibliogr aph y .25 ISO/IEC 2016 All rights reserved iii Contents PageBS ISO/IEC 30134-2:2016ISO/IEC 30134-2:2016(E) Foreword ISO (the International Organization for Standardization) and IEC (the International Electrot
13、echnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the development of International Standards through technical committees established by the respective organization to deal with particular fields of technical
14、 activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information technology, ISO and IEC have established a joint technical
15、committee, ISO/IEC JTC 1. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of document should be noted. This document was drafted i
16、n accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent
17、 rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not co
18、nstitute an endorsement. For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT), see the following URL: Foreword Supplementary information. Th
19、e committee responsible for this document is ISO/IEC JTC 1, Information technology, Subcommittee SC 39, Sustainability for and by Information Technology. ISO/IEC 30134 consists of the following parts, under the general title Information technology Data centres Key performance indicators: Part 1: Ove
20、rview and general requirements Part 2: Power usage effectiveness (PUE) Part 3: Renewable energy factor (REF) The following parts are under preparation: Part 4: IT Equipment Energy Efficiency for Servers (ITEEsv) Part 5: IT Equipment Utilization for Servers (ITEUsv)iv ISO/IEC 2016 All rights reserved
21、BS ISO/IEC 30134-2:2016ISO/IEC 30134-2:2016(E) Introduction The global economy is now reliant on information and communication technologies and the associated generation, transmission, dissemination, computation and storage of digital data. All markets have experienced exponential growth in that dat
22、a, for social, educational and business sectors and, while the internet backbone carries the traffic there are a wide variety of data centres at nodes and hubs within both private enterprise and shared/collocation facilities. The historical data generation growth rate exceeds the capacity growth rat
23、e of the information and communications technology hardware and, with less than half (in 2014) of the worlds population having access to an internet connection, that growth in data can only accelerate. In addition, with many governments having “digital agendas” to provide both citizens and businesse
24、s with ever faster broadband access, the very increase in network speed and capacity will, by itself, generate ever more usage (Jevons Paradox). Data generation and the consequential increase in data manipulation and storage are directly linked to increasing power consumption. With this background,
25、it is clear that data centre growth, and power consumption in particular, is an inevitable consequence and that growth will demand increasing power consumption despite the most stringent energy efficiency strategies. This makes the need for key performance indicators (KPIs) that cover the effective
26、use of resources (including but not limited to energy) and the reduction of CO 2emissions essential. Within the ISO/IEC 30134 series, the term “resource usage effectiveness” is more generally used for KPIs in preference to “resource usage efficiency”, which is restricted to situations where the inpu
27、t and output parameters used to define the KPI have the same units. In order to determine the overall resource effectiveness or efficiency of a data centre, a holistic suite of metrics is required. This part of ISO/IEC 30134 specifies power usage effectiveness (PUE), which has become a popular metri
28、c to determine the efficient utilization and distribution of energy resources within a data centre. NOTE It is recognized that the term “efficiency” is to be employed for PUE but “effectiveness” provides continuity with earlier market recognition of the term. This part of ISO/IEC 30134 belongs to a
29、series of standards for such KPIs and has been produced in accordance with ISO/IEC 30134-1, which defines common requirements for a holistic suite of KPIs for data centre resource usage effectiveness or efficiency. The ISO/IEC 30134 series does not specify limits or targets for any KPI and does not
30、describe or imply, unless specifically stated, any form of aggregation of individual KPIs into a combined nor an overall KPI for data centre resource usage effectiveness or efficiency. ISO/IEC 2016 All rights reserved vBS ISO/IEC 30134-2:2016BS ISO/IEC 30134-2:2016Information technology Data centres
31、 Key performance indicators Part 2: Power usage effectiveness (PUE) 1 Scope This part of ISO/IEC 30134 specifies the power usage effectiveness (PUE) as a key performance indicator (KPI) to quantify the efficient use of energy in the form of electricity. This part of ISO/IEC 30134 a) defines the powe
32、r usage effectiveness (PUE) of a data centre, b) introduces PUE measurement categories, c) describes the relationship of this KPI to a data centres infrastructure, information technology equipment and information technology operations, d) defines the measurement, the calculation and the reporting of
33、 the parameter, e) provides information on the correct interpretation of the PUE. PUE derivatives are described in Annex D. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references
34、, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO/IEC 30134-1:2016, Information technology Data centres Key performance indicators Part 1: Overview and general requirements 3 T erms, d efinitions , abbr e v
35、iat ed t erms and s ymbols 3.1 T erms and definiti ons For the purposes of this document, the terms and definitions given in ISO/IEC 30134-1 and the following apply. 3.1.1 information technology (IT) equipment energy consumption energy consumed, measured in kilowatt-hour (kWh), by equipment that is
36、used to store, process, and transport data within the computer room, telecommunication room and control room spaces Note 1 to entry: Examples are servers, storage equipment, and telecommunications equipment. 3.1.2 p o w e r d i s t r i b u t i o n u n i t PDU equipment that allocates or partitions p
37、ower for other energy consuming equipment INTERNATIONAL ST ANDARD ISO/IEC 30134-2:2016(E) ISO/IEC 2016 All rights reserved 1BS ISO/IEC 30134-2:2016ISO/IEC 30134-2:2016(E) 3.1.3 power usage effectiveness PUE ratio of the data centre total energy consumption to information technology equipment energy
38、consumption, calculated, measured or assessed across the same period Note 1 to entry: Sometimes the inverse value of PUE, referred to as Data Centre Infrastructure Efficiency (DCiE), is used. 3.1.4 partial power usage effectiveness pPUE derivative of PUE, which is the ratio of the total energy consu
39、mption within a defined boundary to the information technology equipment energy consumption 3.1.5 designed power usage effectiveness dPUE derivative of PUE, which is a projected PUE determined by the design targets of the data centre 3.1.6 interim power usage effectiveness iPUE derivative of PUE, wh
40、ich is measured over a specified time other than a year 3.1.7 total data centre energy consumption total energy consumption for all energy types serving the data centre, measured in kWh at its boundary Note 1 to entry: Energy measured with energy metering devices at the boundary of the data centre o
41、r points of generation within the boundary. Note 2 to entry: This includes electricity, natural gas and district utilities such as supplied chilled water or condenser water. 3.2 A bbr e viat ed t erms For the purposes of this document, the abbreviated terms given in ISO/IEC 30134-1 and the following
42、 apply: CRAC computer room air conditioner units CRAH computer room air handler units dPUE designed power usage effectiveness DX direct expansion iPUE interim power usage effectiveness PDU power distribution unit pPUE partial power usage effectiveness r.m.s. root mean square ROI return on investment
43、 UPS uninterruptible power supply 3.3 S ymbols For the purposes of this document, the following symbols apply: E DC total data centre energy consumption (annual) in kWh E IT IT equipment energy consumption (annual) in kWh2 ISO/IEC 2016 All rights reservedBS ISO/IEC 30134-2:2016ISO/IEC 30134-2:2016(E
44、) 4 A pplica ble ar eas of the data c entr e Power usage effectiveness (PUE) as specified in this part of ISO/IEC 30134 is associated with the data centre infrastructure within its boundaries only, describes the infrastructures energy efficiency relative to facilities with given environmental condit
45、ions, IT load characteristics, availability requirements, maintenance, and security requirement, and illustrates the energy allocation of a data centre. When viewed in the proper context, PUE provides effective guidance and useful insight into the design of efficient power and cooling architectures,
46、 the deployment of equipment within those architectures, and the operation of that equipment. PUE provides a means to determine opportunities for the improvement of the operational efficiency of a data centre, the improvement of the designs and processes of a data centre over time, and a design targ
47、et or goal for new data centres across the anticipated IT load range. PUE does not take into account the energy efficiency of the IT load, its utilization or productivity, efficiency of on-site electricity generation, efficiency of other resources such as human resource, space or water, and use of r
48、enewable energy resources or accounts for re-use of waste by-products (such as heat). PUE is not a data centre productivity metric, and standalone, comprehensive resource efficiency metric. Derivatives of PUE which are useful in certain circumstances as described in Annex C. PUE should not be used t
49、o compare different data centres. 5 Determination of power usage effectiveness (PUE) PUE is defined using Formula (1): = (1) whereE DC is the total data centre energy consumption (annual), in kWh;E IT is the IT equipment energy consumption (annual), in kWh. By definition, the calculated PUE is always greater than 1. Where the only energy source is from the electrical utility, then E DCis determined by the location of the utility
