ISO/IEC 30134-5:2017

INTERNATIONAL ISO/IEC
STANDARD 30134-5
First edition
2017-11
Information technology — Data
centres — Key performance
indicators —
Part 5:
IT Equipment Utilization for servers
(ITEUsv)
Technologies de l'information — Centres de traitement de données —
Indicateurs de performance clés —
Partie 5: Utilisation des appareils de technologies de l'information
(TI) se rapportant aux serveurs
Reference number
ISO/IEC 30134-5:2017(E)
©
ISO/IEC 2017

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ISO/IEC 30134-5:2017(E)

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ii © ISO/IEC 2017 – All rights reserved

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ISO/IEC 30134-5:2017(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and abbreviated terms . 1
4 Relevance of ITEUsv . 2
5 Determination of ITEUsv(t) . 2
6 Measurement of ITEUsv . 3
7 Application of ITEUsv . 4
8 Reporting of ITEUsv . 4
8.1 Requirements . 4
8.2 Recommendations . 4
Annex A (informative) Options for calculating ITEUsv . 6
Bibliography . 7
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ISO/IEC 30134-5:2017(E)

Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
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
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 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 in 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
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
constitute an endorsement.
For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following
URL: www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/JTC 1, Information technology, Subcommittee
SC 39, Sustainability for and by Information Technology.
A list of all parts in the ISO 30134 series can be found on the ISO website.
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ISO/IEC 30134-5:2017(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 data 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 rate of the information and
communications technology hardware and, with less than half of the world's population having access
to an Internet connection as of 2014, that growth in data can only accelerate. In addition, with many
governments having “digital agendas" to provide both citizens and businesses with faster broadband
access, the very increase in network speed and capacity will, by itself, generate more usage (Jevon's
Paradox). Data generation and the consequential increase in data manipulation and storage are directly
linked to increasing power consumption.
With this background, 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 use of resources (including, but not limited to, energy) and the reduction of CO
2
emissions essential.
In order to determine the overall resource effectiveness or efficiency of a data centre, a holistic suite of
metrics is required. For the resource effectiveness or efficiency of data centre infrastructures, power
usage effectiveness (PUE) was defined in ISO/IEC 30134-2. PUE will be utilized to measure and improve
energy efficiency of data centre infrastructures, such as cooling systems and power supply systems.
For data centres that own not only infrastructure but also IT equipment, it is also necessary to measure
and improve energy effectiveness or efficiency of their IT equipment. A data centre, which provides
only infrastructure to the customer, is called a co-location data centre or housing service provider. For
these data centres, PUE is essential. On the other hand, a data centre which owns and provides server,
storage and network equipment is called a hosting or cloud service provider. These service providers
can manage IT equipment and improve the energy effectiveness of a data centre by improving the
energy effectiveness of the IT equipment which they own.
This document specifies the IT Equipment Utilization for servers in a Data Centre (ITEUsv) which
specifies a method for measuring the average utilization of server equipment in a data centre. A data
centre which owns servers can use this document to determine the average utilization of their current
server equipment and to improve energy effectiveness by increasing the average utilization of servers.
IT equipment installed in a data centre consists of servers, storage systems and network equipment.
But it is difficult to calculate the summarized utilization among different types of IT equipment since
the metrics for measuring their performance are different and a simple addition or average is not an
appropriate method for summarizing. ITEUsv defines the method to obtain the average utilization of
servers.
One approach to improve the resource effectiveness or efficiency of servers in a data centre is to
— improve the utilization ratio of servers by using such technologies as virtualization and server
consolidation for sharing use of servers, and
— reduce the number of servers to achieve the same level of information processing.
ITEUsv is a KPI used to quantify the effects of this approach.
This document is part of a series of International 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 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.
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INTERNATIONAL STANDARD ISO/IEC 30134-5:2017(E)
Information technology — Data centres — Key
performance indicators —
Part 5:
IT Equipment Utilization for servers (ITEUsv)
1 Scope
This document specifies the IT Equipment Utilization for servers (ITEUsv) as a Key Performance
Indicator (KPI) to quantify the utilization of servers in a data centre. This document is intended as a KPI
for improving the aggregate energy efficiency of servers in a given data centre.
This document
a) describes the purposes of ITEUsv,
b) defines ITEUsv in a conceptual manner,
c) describes how to use ITEUsv, and
d) describes reporting of ITEUsv.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of
...