Certification of data centers according to ISO 22237

ISO 22237: The international standard for data centers

What is ISO 22237?

The international standard ISO/IEC 22237 (Information technology – Data center facilities and infrastructures) lays the basic groundwork for data centers being planned, built and operated in future based on the same principles worldwide.

As the international counterpart to EN 50600, ISO 22237 – together with ISO 30134 – constitutes a holistic approach to describing all aspects of the installation and infrastructure of data centers. This includes requirements for availability and security (ISO 22237-x) and for energy-efficiency and sustainability (ISO 30134-x) of the physical infrastructure.

To date, parts 1, 3 and 4 of the ISO 22237 series of standards have been published. Further parts are available as technical specifications (TS), and will follow successively.

What benefits does ISO 22237 deliver?

Benefits ISO 22237: International comparability Benefits ISO 22237: International comparability Benefits ISO 22237: International comparability Benefits ISO 22237: International comparability

International comparability
The global standard ISO 22237 will in future allow better international comparability of data centers.

A meaningful certificate
Providing a criteria catalog (e.g. TSI. ISO22237) allows the simple, transparent and reliable certification of future data centers.

Clear specifications for high-availability data centers
Whether for planning, construction or operation, ISO 22237 defines holistic requirements for data centers.

In future, it will no longer be a case of comparing apples with oranges
As a shared foundation for understanding, ISO 22237 will strengthen confidence in the availability of a data center..

Reliability during the planning phase for new data centers
With requirements for ISO 22237 conformity, data center operators can achieve valuable competitive advantages during the planning phase.

Continuous improvement process
With its two-year recertification period, the certification ensures high quality and a continuous improvement process are maintained.

What are the contents of ISO 22237?


Structure of the standard

The requirements of ISO 22237 are currently divided into 7 parts: 

  • ISO/IEC 22237-1: General Concept
  • ISO/IEC TS 22237-2: Building Construction
  • ISO/IEC 22237-3: Power distribution
  • ISO/IEC 22237-4: Environmental control
  • ISO/IEC TS 22237-5: Telecommunications cabling infrastructure
  • ISO/IEC TS 22237-6: Security systems
  • ISO/IEC TS 22237-7: Management and operational information 

Parts 1, 3 and 4 have already been published. The remaining parts are currently available as a Technical Specification (TS), and will progressively be transferred into officially applicable parts of the standard. The implementation is however expected to take up to 2 years.

The 4 availability classes of ISO 22237

Just like EN 50600 before it, ISO 22237 draws distinctions between the following four availability classes, which relate to the energy supply, cooling system and cabling:

Availability class 1

Data center with a single, non-redundant supply path. 

Availability class 2

Data centers with partial redundancies based on a supply path.

Availability class 3

Data center has multiple independent supply paths. 

Solution for maintenance during ongoing operation.

Availability class 4

Data center has multiple independent supply paths. 

Fault-tolerant, except during maintenance.

What is the relationship between ISO 22237 and EN 50600?

Since 2015, EN 50600 has been providing the planners, installers and operators of data centers with an integrated approach to the planning, construction and operation of a data center. ISO 22237 builds on this, bringing the requirements to an international level. In relation to the parts of the ISO standard already published, the good work of the EN 50600 committee is reflected in the fact that the requirements have been adopted into the ISO standard practically unchanged from the EN standard.

The two standards compared:

ISO/IEC 22237

EN 50600


ISO/IEC 22237-1

EN 50600-1

General concepts

ISO/IEC TS 22237-2

EN 50600-2-1

Building construction

ISO/IEC 22237-3

EN 50600-2-2

Power distribution

ISO/IEC 22237-4

EN 50600-2-3

Environmental control

ISO/IEC TS 22237-5

EN 50600-2-4

Telecommunications cabling infrastructure

ISO/IEC TS 22237-6

EN 50600-2-5

Security systems

ISO/IEC TS 22237-7

EN 50600-3-1

Management and operational information

What services does TÜViT offer relating to ISO 22237?

Even though ISO 22237 is only thus far available in part, not yet having been published in full, we can already confirm conformity with the standard on the basis of our existing criteria catalogs. In this respect, we benefit in particular from our active participation in the standardization committee, which enables us to continuously develop and update our TÜViT criteria catalogs.

In preparation for certification under ISO 22237, we provide: 

Workshops on requirements & assessment considerations

Concept & planning assessment

Conformity assessments /
gap analyses

Certification under

Do you still have specific questions on ISO 22237, our services, or individual solutions?
We look forward to your inquiry!  

FAQ - Frequently asked questions at a glance

When will certification under ISO 22237 become available?

Because parts of ISO 22237 are still available only in the form of a Technical Specification and the standard is therefore still in the coordination process, corresponding certification is not yet possible.

However, TÜViT’s own TSI.STANDARD already allows you to optimize your preparations today for certification under ISO 22237. This is because this builds on the requirements of the international standard, allowing us to confirm that you are on the right path for ISO 22237. 

What is the relationship between ISO 22237 and ISO 27001?

ISO 22237 can be considered a supplement to ISO 27001. 

While ISO 22237 focuses on the quality and availability of an infrastructure facility, ISO 27001 focuses on general information security and serves as a guideline for the structure of an information security management system (ISMS).

Why we are a strong partner for you


Our experts have many years of experience in evaluation and certification of data centers and provide competent support in every area of infrastructure.

Industry experience

Due to many years of experience in different branches of industry we can serve companies from a wide range of industries.

Tailor-made for you

We focus on individual services - and solutions - that optimally fit your current company situation and your set goals.

International network of experts

Around the globe: We consult and support you both nationally and internationally. Our global network of experts is ready to help you in word and deed in all IT security issues.


Our employees are not subject to any conflicts of interest, as they are not committed to any product suppliers, system integrators, stakeholders, interest groups or government agencies.
You have questions? We are pleased to help!


Mario Lukas

Senior Account Manager Data Center

+49 201 8999-567
Fax : +49 201 8999-555

Marc Wilkens

Senior Expert Data Center Energy Efficiency

+49 201 8999-471
Fax : +49 201 8999-555

Further services

DIN EN 50600: Die europäische Norm für Rechenzentren

EN 50600 – questions and answers

EN 50600 represents the first international European standard that uses a holistic approach to make comprehensive specifications for the planning, new construction and operation of a data center. What is EN 50600? What benefits does EN 50600 bring?
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Trusted Site Infrastructure (TSI)

Trusted Site Infrastructure - the de facto standard for data centers. TSI is a method for the evaluation and certification of physical security and availability of data centers established since 2002.
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The two-day TSI.PROFESSIONAL training teaches all necessary information regarding the evaluation and certification of Data Centers physical security and availability according to Trusted Site Infrastructure (TSI) in context with DIN EN 50600.
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The one-day workshop gives you a good overview of the current security status of your data center. It is designed to provide you with everything worth knowing about the assessment of data center infrastructure under Trusted Site Infrastructure (TSI) in the context of EN 50600.
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Design Assessment

The successful development of a highly available data center under the Trusted Site Infrastructure criteria begins in the planning phase. During this stage, TÜViT supports operators and planners of IT infrastructures.
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For the smooth and fault-free operation of a data center, the proper functioning of critical supply infrastructure plays a decisive role. Therefore, they are at the focus of extensive test processes, which are typically performed before the data center commences operation.
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Energy Efficiency

The Trusted Site eEfficiency audit and certification program supports the operators of data centers in developing systems and processes that allow the continuous improvement of their energy efficiency.
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With certification under the TSI (Trusted Site Infrastructure) criteria catalog developed by TÜViT, which also covers the European data center standard EN 50600 in full, data center operators are in the clear.
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