Liam Newcombe BCS Data Centre Specialist Group Secretary

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Liam NewcombeBCS Data Centre Specialist Group
Secretary

• Energy Efficient Data Centres

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Cardiff University
Energy Use in the Data Centre EU Code of Conduct
for Data Centre Operators
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Asking the Wrong Questions Per Service Energy
Use The DCSG Model
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Asking the Wrong Questions
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The Power Delivery Path
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For each Watt my Data Centre consumes what
output do I get? vs. For each Service I deliver
how much energy do I use?
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What is the marginal economic or environmental
benefit of operating this IT service?
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Per Service Energy Use Data Centres Servers Server
in a Data Centre
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• Data Centre Power - Where does it go?

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Per Service Energy Use Data Centres Servers Server
in a Data Centre
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• Server Power and Efficiency vs. Workload

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Per Service Energy Use Data Centres Servers Server
in a Data Centre
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• Put the Server in a Data Centre
• What does DCiE / PUE tell us?

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Metering Install Detailed Power Metering? What
about Blade Servers and Virtualisation?
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Install Detailed Power Metering?
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Metering Install Detailed Power Metering? What
about Blade Servers and Virtualisation?
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Metering Fails for Blades or Virtualisation
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Where to Measure
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Metering Must be able to link logical to
physical Cannot solve our problem
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DCSG Data Centre Model
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DCSG Data Centre Model

• IT Workload

IT Device Load to Power Function
Data Centre Power Transfer Function
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EU Code of Conduct for Data Centre Operators
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Context Goals and Scope Development Best
Practice Release
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Context for the CoC
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• Political Context
• Carbon reduction commitment
• Energy security
• Industry Context
• Many activities within Industry
• Risk of Confusion and Mixed Messaging

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• Economic Context
• Rising energy costs
• Data Centres represent an increasing proportion
  of overall business cost
• Social Context
• Rising public awareness
• Data Centres represent an easy target
• ICT can reduce environmental impact
• Demonstrate that our industry is not profligate
  with energy

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Goals and Scope of the CoC
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• Goals
• Led by Paolo Bertoldi, Directorate General
• aim is to inform and stimulate Data Centre
  operators to reduce energy consumption in a cost
  effective manner without hampering the critical
  function .
• A Voluntary Commitment
• Reward best practice with branding and associated
  EU Green marketing.

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• Scope
• The Code of Conduct covers
• Data centres of all sizes server rooms to
  dedicated buildings
• Both existing and new
• IT power and Facility power
• Equipment procurement and system design

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• Scope
• The Code of Conduct is for
• Participants Data centre owners and operators
• Endorsers Vendors, consultants, industry
  associations

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Development
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• Substantial Interest
• Broad Participation and Support from
• Vendors
• Data Centre Operators
• End User Organisations
• Will become a Supplier Selection Criterion

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• Working Groups
• Best Practice
• Focused on design best practice, Software, IT
  Architecture and Facility
• Metrics Measurement
• Developing a standard method of comparative
  measurement of energy efficiency
• Data Collection Analysis
• Performance benchmarking across the industry

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Best Practice
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• Best Practice Intent
• Neither a prescriptive nor exhaustive list of
  specific technologies
• Focus on goals
• Structured to allow the addition of new
  technologies

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• Best Practice Intent
• Some Practices are required for Participants
• Practices that apply to
• Existing estate
• New IT equipment
• New or refitted Data Centres
• It is understood that not all operators will be
  able to implement all required practices

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• Value of Practices
• Best Practices are guidance to operators on how
  they might improve energy efficiency
• Practices are scored 1-5 (min-max) based upon
  their likely energy use benefit
• Practices are ordered by score

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• Required Practices
• Grid and Virtualisation
• Processes should be put in place to require
  senior business approval for any new service that
  requires dedicated hardware and will not run on a
  resource sharing grid or virtualised platform
• Select efficient software
• Make the performance of the software, in terms
  of the power draw of the hardware required to
  meet performance and availability targets a
  primary selection factor

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• Required Practices
• New IT Equipment
• Include the Performance per Watt of the IT
  device as a high priority decision factor in the
  tender process
• Power Provisioning
• Provision power and cooling only to the
  as-configured power draw capability of the
  equipment, not the PSU or nameplate rating

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Example Scenario

• Same Computing Workload
• 100 One App Per Server Servers
• 15 Virtualised Servers
• 10 HPC Grid Servers
• Old N1 Data Centre, Nameplate Provisioning

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• Old N1 Data Centre, Nameplate

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• Old N1 Data Centre, Nameplate

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• Old N1 Data Centre, Nameplate

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Example Scenario

• Same Computing Workload
• 100 One App Per Server Servers
• 15 Virtualised Servers
• 10 HPC Grid Servers
• Old N1 Data Centre, Peak Provisioning

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• Old N1 Data Centre, Peak

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• Old N1 Data Centre, Peak

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• Required Practices
• Cooling
• Review and if possible raise target IT equipment
  intake air temperature
• Above the dew point
• Review of cooling before IT equipment changes
• Rack air flow management

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• Required Practices Retrofit or New
• Cooling
• Design Contained hot or cold air
• Variable Speed Air Fans
• Rack air flow management
• Utilisation, Management and Planning
• Lean provisioning of power and cooling for 18
  months worth of data floor capacity

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Example Scenario

• Same Computing Workload
• 100 One App Per Server Servers
• 15 Virtualised Servers
• 10 HPC Grid Servers
• New N1 Data Centre, Free Cooling

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• New N1 Data Centre, Free Cooling 19C

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• New N1 Data Centre, Free Cooling 25C

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• New N1 Data Centre, Free Cooling 25C

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• New N1 Data Centre, Free Cooling 25C

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Example Scenario

• 15 Virtualised Servers
• Old N1 Data Centre, Nameplate Provisioning
• Old N1 Data Centre, Peak Provisioning
• New N1 Data Centre, Free Cooling

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• Comparison of Virtualised Scenarios

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• Comparison of Virtualised Scenarios

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• Required Practices Retrofit or New
• Cooling
• Design Contained hot or cold air
• Variable Speed Air Fans
• Rack air flow management
• Utilisation, Management and Planning
• Lean provisioning of power and cooling for 18
  months worth of data floor capacity

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CoC Release
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• Release Target
• Draft released 30th April
• 1st Release September 2008

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Thank you Find out more Data Centre Specialist
Group http//dcsg.bcs.org