How do you recognize an energy-efficient data
center?
High Density - High Efficiency - High Temperature in the Data Center
Efficiency trap in the Data Center
Rümlang, May 2012
Table of Contents
Company Profile & Data Center Zurich 1 (ZRH1)
Containment Solutions - Smart Aisle Containment
Company Overview
e-shelter designs, builds and operates data centers to house mission-critical
IT systems
design
build
operate
data center infrastructure
 Physical security
 Facility management
 Provision of highly resilient
power and cooling
e-shelter is the leading full-service provider for data center infrastructure in Germany providing the highest standard in
physical security and operational reliability.
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Currently e-shelter operates more than 85,000 sqm of data center space,
three additional locations are under development
Overview locations
Data Center Campus
Frankfurt
 60,000 sqm area
 24/7 Service &
Control centre
 Headquarters
Data Center Campus Berlin
 13,000 sqm area
Hamburg
London
Data Center Campus Zurich
 7,000 sqm area in
operation, additional 6,000
planned
Berlin
Frankfurt/
Main
Colocation Centers
 Frankfurt (1,900 sqm)
 Munich (1,960 sqm)
 Hamburg (1,230 sqm)
New locations
 London
 Munich II
 Frankfurt III
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Munich
e-shelter Datacentre location
e-shelter Datacentre location planned
High Density - High Efficiency - High Temperature in the Data Center
Efficiency trap in the Data Center
Zurich
e-shelter planning and design implements highest standards in energy
efficiency and latest developments in technical progress
Energy efficiency and sustainability
Research & Development
In order to develop best-practice approaches for energy efficient
operation of data centers e-shelter is actively engaged in different
workshops and organisations e.g. “the green grid“ and “Uptime Institute.”
e-shelter works with large suppliers of cooling technology to explore and
test new cooling techniques, and has developed a sophisticated
measuring system to continuously monitor energy utilization (e.g. cooling
requirements in different zones).
Operational excellence
e-shelter designs and operates its data centers to be highly efficient and
applies state-of-the-art technology to achieve an optimal utilization of
energy. Hereby e-shelter is able to achieve highly competitive power
utilization efficiency factors for its data centers (PUE factor).
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Data Center Zurich 1 (ZRH1)
e-shelter‘s first datacenter in Switzerland is located in the north of Zurich,
approx. 8 km from the city center
Location
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The largest purpose-built data center in Switzerland
Building
 The freestanding building is designed and built solely for the purpose of housing IT infrastructure. All external and internal
building features are constructed with high quality materials and meet or exceed industry standards.
 The first stage of construction provides 7’000 sqm of net data center space and 1’000 sqm of office space
 The facility meets the LEED (Leadership in Energy and Environmental Design) Platinum pre-certification
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Carrier Connectivity
Redundant Carrier Connectivity
Site
Connectivity
Carrier
Other providers
single
redundant
own fiber
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Efficiency trap in the Data Center
Security
Structural, technical and organizational separation of the security zones
Security Systems
 The security concept includes having all
safety-sensitive areas situated in the
core of the building to the extent where
this is feasible so that the security
zones beyond the core serve as
buffers.
 All security zones are structurally,
technically and organizationally
separated from one another
 All security zones are monitored by way
of synchronized technical safety
measures
 This way it is ensured that the
cumulative safety function for creating
the necessary penetration resistance/
resistant time value
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7
Security Command and
Control centre (SCC)
6
Carrier rooms
5
Datacentre areas
4
Technical areas
3
Circulation area for tenants
2
Circulation area building(s)
1
Circulation area Datacentre site
High Density - High Efficiency - High Temperature in the Data Center
Efficiency trap in the Data Center
Power and Cooling Systems
The redundant power supply guarantees maximum availability
Power supply
 Power is distributed on an A & B feed up to the rack
 The critical components of the power supply are designed in an 2N+1 configuration
 State-of-the-art static UPS systems with a high degree of scalability and reliability incl. isolating transformers
 On-site back-up power (diesel generators) in an N+2 configuration
 72h diesel-fuel storage on site.
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Efficiency trap in the Data Center
Air conditioning and cooling systems designed to meet all requirements of a
high-availability system
Cooling




Redundant cooling and air conditioning systems
Separate chiller- and free-cooling systems for maximum efficiency
Adiabatic cooling
Individual cooling solutions available (rack-housing, high-density-racks)
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Containment Solutions - Smart Aisle Containment
Short Historie Review
2006: Start of CAC - SmartAisle
2% 7%
8%
2%
IT Load
Power Cooling
Power Light
Electrical Losses
11%
PUE = 1,35
Power Fans
80%
3%
IT Load
12%
Power Cooling
50%
PUE = 2,0
Power Light
Electrical Losses
25%
Power Fans
Containment Solution - EMERSON/ Knürr
from 2,0 to 1,35 … and it gets even better!
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Efficiency trap in the Data Center
SmartAisle Containment
Containment Solution
SmartAisle Containment Solution
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Efficiency trap in the Data Center
SmartAisle Containment vs. Pressure compensation
Containment Solution
p  1 Pa
SmartAisle Containment Solution
p  20 Pa
Pressure Compensation Solution
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SmartAisle Containment vs. Pressure compensation
For Example: 240 kW IT-Usage
Heat diagram - Containment Solution
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Efficiency trap in the Data Center
Results
SmartAisle Containment vs. Pressure compensation
Electricity for powering of drives
No arrangement
(3 ULKs)
Pressure
compensation
Fan speed 100%
17,04 kW
Mode “full load”
(3 ULKs)
Fan speed 91%
12,90 kW
Fan speed 71%
5,94 kW
Mode “normal operation”
(4 ULKs)
Fan speed 70%
7,76 kW
Fan speed 54%
3,52 kW
Mode “efficient operation”
(6 ULKs)
Fan speed 49%
4,08 kW
Fan speed 37%
1,68 kW
Mode “high efficient operation”
(8 ULKs)
Fan speed 38%
2,72 kW
Fan speed 30%
1,28 kW
Source: Emerson Network Power White Paper 2012
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SmartAisle
Containment
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Efficiency trap in the Data Center
Energy saving via speed control
The mothers of energy efficiency
Continuous cold / warm separation

Dynamic regulation the entire system

High standard temperature, free cooling
EC Ventilators - Speed control
9,00
8,00
7,00
6,00
Speed ​control results in great energy savings

"sweet spot"
5,00
4,00
1/2 speed  1/8 power consumption
3,00
2,00
% speed or airflow 
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Efficiency trap in the Data Center
100%
75%
50%
33%
1,00
0,00
power consumption [kW] 

Cooling requirements of IT Equipment
Temperature and humidy on the suction side
ASHRAE TC 9.9 Thermal Guidelines 2008 / modified 2011 for Class A1 *)
Recommended:
Allowable:
Entry
temperature
25
5,5°C DP - 60% RH and 15°C DP
20% RH - 80% RH (Class A1)
20% RH - 80% RH (Class A2)
Component / consumption
Exit
temperature
Consumption
25°C
T  7K
32°C
470 m³/h per kW
25°C
T  15K
40°C
220 m³/h per kW
25°C
Source:
18 - 27°C,
15 - 32°C,
10 - 35°C,
T  25K
50°C
130 m³/h per kW
2011 Thermal Guidelines for Data Center Processing Environments - Expanded Data Center Classes and Usage Guidance
May 2012
High Density - High Efficiency - High Temperature in the Data Center
Efficiency trap in the Data Center
Server power consumption vs. suction temperature
Power
1,20 kW
1,15 kW
1,10 kW
approx. + 12%
1,05 kW
1,00 kW
15 °C
Source:
26
20 °C
25 °C
30 °C
35 °C
2011 Thermal Guidelines for Data Center Processing Environments - Expanded Data Center Classes and Usage Guidance
May 2012
High Density - High Efficiency - High Temperature in the Data Center
Efficiency trap in the Data Center
Aspirated air flow vs. suction temperature
Power
2,60 m³
2,20 m³
1,80 m³
approx. + 55%
1,40 m³
1,00 m³
15 °C
Source:
27
20 °C
25 °C
30 °C
35 °C
2011 Thermal Guidelines for Data Center Processing Environments - Expanded Data Center Classes and Usage Guidance
May 2012
High Density - High Efficiency - High Temperature in the Data Center
Efficiency trap in the Data Center
Case 1: Is it worth the higher temperature?
Power
Other
2
%
Other
2
%
Other
2%
Other
2%
Electricity
8%
Electricity
?
8%
Cooling
Cooling
14 %
ULK
ULK
1%
IT
IT
100 %
PUE = 1,35
Suction Temperatur :
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May 2012
14 %
1%
100 %
PUE = ?
25 °C
35 °C
High Density - High Efficiency - High Temperature in the Data Center
Efficiency trap in the Data Center
History review to future outlook
It becomes hotter!
Thermography hot aisle
From 35°C to 50°C … and it rise up!
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Efficiency trap in the Data Center
Water cooled rack-solutions - EMERSON/ Knürr
Case 2: 40 - 50 in the data center - is it possible/ useful/ efficient?
Exit temperature-range for Blade Server (example)
50°C
45°C
40°C
Full load
35°C
Idle speed/ no-load
32°C
30°C
27°C
Allowed envelope
25°C
20°C
Recommended envelope
18°C
15°C
Future temperature range
10°C
Class A1
Source:
30
Class A2
2011 Thermal Guidelines for Data Center Processing Environments - Expanded Data Center Classes and Usage Guidance
May 2012
High Density - High Efficiency - High Temperature in the Data Center
Efficiency trap in the Data Center
How do you recognize an energy-efficient data
center?
Olivier Honold
Sales Manager Switzerland
e-shelter facility services (Schweiz) AG
Hofwisenstrasse 56
CH-8153 Rümlang
Telephone:
Fax:
Mobile:
E-Mail:
+41 (44) 817-6560
+41 (44) 817-6539
+41 (79) 402 6139
olivier.honold@e-shelter.ch
Thank You.
www.e-shelter.ch