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