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Your first choice in Switzerland
The energy-efficient
DC-powered data center
National Energy Efficiency Conference
September 20, 2012
Dieter Brack, Director of Solution Design
Contents
Green group
Data center energy consumption
The energy-efficient data center
Green group – facts and figures
Largest Swiss data center operator
5th biggest own data network in Switzerland
100,000 clients
Sustainable company growth
1995: Company founded as Internet service provider
2002: First own data center in operation
2008: Plans for new data center near Zurich
2011: Start of operation of latest data center
The latest greenDatacenter
State-of-the-art technology
First TIER III certified data center in Switzerland
10,000 square meters of usable data center space
Total investment of more than USD 125 million
1 data center = 10 MW
10 MW = 25,000 US homes
Why is it so important that data centers use the latest equipment to
save energy?
Share of energy consumption of data centers
compared to total energy consumption
Data center energy consumption
1.3%
2%
Source: Jonathan G. Koomey, Stanford University
Worldwide:
US:
Digitization and the increasing demands placed on IT result in an annual
increase in data center space of 10%.
Green’s challenge and vision
Growing significance of data center energy consumption
Creating ecological and cost-effective data center solutions by using the
latest technologies
Thomas Alva Edison (1847–1931) George Westinghouse (1846–1914)
AC versus DC
The world’s largest 380 volt DC-powered data center
April 2011: Project contract awarded
December 2011: Installation complete
April 2012: Testing and commissioning complete
Overview of installed power systems
1 high-voltage DC feed (added to the 3 existing AC feeds)
1 MW power delivered in DC from rectifier to servers with no further
transformation
Hardware: HVDC-enabled industry standard servers from HP
Direct current in data centers
AC versus DC – system comparison
16 kV AC 400 V AC 400 V AC 400 V AC 400 V AC 400 V DC
Utility MV/LV transformer
UPS PDU Server Switchgear Server power supply unit
AC architecture
DC architecture
Utility Rectifier Switchgear
16 kV AC 400 V DC 400 V DC
Battery
Battery
12 V DC
Server
12 V DC
Server power supply unit
1 3 2 4
2 1
5
3
PDU
Fewer conversions better efficiency and less cooling
Fewer components lower cost and smaller footprint
Benefits of DC power
20% energy savings through use of DC technology
Reduction of complexity and enhancement of reliability
Genuine cost-cutting for clients
15
Further energy efficiency in greenDatacenter
Data center design
State-of-the-art cooling systems (incl. free cooling, cold aisles)
Waste heat recovery to office building
Module A
Module B
Module C
Office tower
Coming up
Data center modules B & C and InnovationTower
Solar plant with DC microgrid
Thank you for your time and attention
National Energy Efficiency Conference
September 20, 2012
Dieter Brack, Director of Solution Design
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