NetApp Data Center Design - SVLG...NetApp Data Center Design Presentation for SVLG Data Center...
Transcript of NetApp Data Center Design - SVLG...NetApp Data Center Design Presentation for SVLG Data Center...
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NetApp Data Center Design Presentation for
SVLG Data Center Efficiency Summit
November 5, 2014
Mark Skiff, PE, CEM, CFM
Director, IT Data Center Solutions
© 2014 NetApp, Inc. All rights reserved. – Limited Use
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Data Center Design Evolution
© 2014 NetApp, Inc. All rights reserved. – Limited Use 2
Capacity Build
Cost Configuration
Density
kW/rack PUE
mW $/kW year power & cooling >1
Generation 1
Multiple
Smaller
1-3
n/a
Hot / Cold Aisle Prior to 2006 <4 1.65
Generation 2 3 1.8 Cold Aisle
Containment 2006
8 1.55
Generation 3 25 2 / 8 Gen 2 w/
Economizer 2007 (Delivered 2009)
12 1.16
Generation 4 25
(scalable) 2.6
Gen 3 Plus
Refinement 2014
4 to 12 1.12
* Estimated annual
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Data Center Design Evolution
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Capacity Build
Cost Configuration
Density
kW/rack PUE
mW $/kW year power & cooling >1
Generation 1
Multiple
Smaller
1-3
n/a
Hot / Cold Aisle Prior to 2006 <4 1.65
Generation 2 3 1.8 Cold Aisle
Containment 2006
8 1.55
Generation 3 25 2 / 8 Gen 2 w/
Economizer 2007 (Delivered 2009)
12 1.16
Generation 4 25
(scalable) 2.6
Gen 3 Plus
Refinement 2014
4 to 12 1.12
* Estimated annual
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Measuring Performance with PUE
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0.0
0.5
1.0
1.5
2.0
Typical 2.0 PUE
Chiller Plant
AHU
UPS
Humidity Control
Transformer
Lights
IT
Power Usage Effectiveness (PUE) ratio cited as the data center infrastructure efficiency metric
Total power / IT equipment power
Infrastructure systems account for half of total energy in data centers
Typical data center PUE = 2.0
Lower the number the more efficient
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Opportunity + Innovation
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Typical Hot Aisle / Cold Aisle Configuration
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Supply Air Supply Air
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Hot/Cold Aisle w/ VAV at 4 kW/Rack (150 watts/Square Foot)
Control Damper
Temp.
Sensor
C
R
A
H
R
A
C
K
Return Air
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Operational January 2007
– 360 racks @ 8kW / Rack (high
density; 770 watts/sf)
CRAHs Supply Constant Temp
Neutral Cold Room Pressure
– Modulating Dampers
Eliminates Air Mixing
Uniform temperatures
– Infrared shows warm areas blanking
gaps
Control Damper
Press.
Sensor C
R
A
H
R
A
C
K
Return Air
Contained Cold Aisle w/ Pressure Controlled Cooling
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Plan View & Cross Section
Cold Room Hot Aisle
Co
ld R
oo
m
Co
ld R
oo
m
Co
ld R
oo
m
Co
ld R
oo
m
Co
ld R
oo
m
Co
ld R
oo
m
Co
ld R
oo
m
Co
ld R
oo
m
Co
ld R
oo
m
Co
ld R
oo
m
Co
ld R
oo
m
Co
ld R
oo
m
AHU AHU AHU AHU AHU AHU
AHU AHU AHU AHU AHU AHU
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Air Handlers Main Aisle
End of Aisle Air Handling and Center Aisle
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Contained Cold Aisle (Cold Room) and Hot Aisle
Cold Room Hot Aisle
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NetApp Global Dynamic Lab (GDL) & IT Site 2
Opened March, 2009
2,166 racks, 12 kW per rack average load
Predicted PUE = 1.2 (annualized)
FIRST EVER ENERGY STAR RATED
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Plan View – 36 Cold Rooms x 60 cabinets
Corporate IT
R&D
25 mW = 770 watts/sf
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GDL1
Speed Control
Outside
Air
CRAH
RA
CK Cold
Room
Mixing Dampers
Cooling Coil
Hot Air
Return
Pressure
Sensor
Fan
Outside
Relief
Dampers
• 360 IT racks
– 6kW/rack
– Dual path UPS &
generators
• 1800 Engineering racks
– 12 kW/rack
– Utility power only
• 30 Engineering Network
racks
– 3 kW/rack
– Single path UPS &
generator
• Cold Room with Pressure
Controlled Cooling
• Airside economizer
• Elevated Air and CHW
Temps
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Main Hall; 1st Floor
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Cold Room; 1st Floor
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Measuring Efficiency with PUE
0.0
0.5
1.0
1.5
2.0
Typical 2.0 PUE
Chiller Plant
AHU
UPS
Humidity Control
Transformer
Lights
IT
0.0
0.5
1.0
1.5
2.0
1.2 PUE (Annualized)
Chiller Plant
AHU
UPS
Humidity Control
Transformer
Lights
IT
Power Usage Effectiveness (PUE) ratio cited as the data center infrastructure efficiency metric
Total power / IT equipment power
Infrastructure systems account for half of total energy in data centers
Typical data center PUE = 2.0
Lower the number the more efficient
NetApp RTP Building 4, predicted PUE = 1.2
State-of-the-Art Data Center 2009 2010 2011
EPA assumed PUE ratio 1.67 1.56 1.45
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Full FREE Cooling PUE = 1.07 Outside Air Temp = 73oF (23oC)
Cold Room 75oF (24oC) Return Air
91oF (33oC)
90%
10%
Speed Control
CRAH
Cold
Room
Mixing Dampers
Cooling Coil
Hot Air
Return
Pressure
Sensor
Fan
Outside
Relief
Dampers
90%
90%
10%
RA
CK
RA
CK
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Full PAY Cooling PUE = 1.30 Outside Air Temp > 91OF (33oC)
Return Air
91o (33OC)
90%
10%
Speed Control
CRAH
Cold
Room
Mixing Dampers
Cooling Coil
Hot Air
Return
Pressure
Sensor
Fan
Outside
Relief
Dampers
90% 100%
Cold Room 75oF (24oC) RA
CK
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PARTIAL Free Cooling PUE = 1.07 – 1.30
20
Outside Air Temp >75oF (24oC) to <91oF (33oC)
90%
10%
Speed Control
CRAH
Cold
Room
Mixing Dampers
Cooling Coil
Hot Air
Return
Pressure
Sensor
Fan
Outside
Relief
Dampers
90% 100%
Return Air
91o (33OC) Cold Room 75oF (24oC) RA
CK
100%
20 © 2014 NetApp, Inc. All rights reserved. NetApp Confidential – Limited Use
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TEMP (F) #HRS/YR % of YR
<75o (24oC) 5481 62%
75-80o 2043 23%
80-85o 585 7%
85-90o 426 5%
>90o (32oC) 225 3%
Raleigh Weather Data
“FREE”
“PAY”
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Actual Performance: 2013 Free Cooling
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Actual Performance: 4Year Average Free Cooling
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Actual Performance: 4Year Monthly Free Cooling
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Actual Performance: PUE
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Current PUE = 1.16
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Lessons Learned and a Few “Ah-Ha’s”
PUE Range = 1.07 – 1.30 (average annual 1.16)
4 kW / rack average after 5 years
Construction Costs 20-33% of Industry
60 Degree Chilled Water
Temp Rise 16 degrees
TCOE 1/3 Site 1, 1/5 HQ, 1/7 Colo
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Global Dynamic Lab 2
Project Goals – Bigger, Better, Cheaper
Project Completion; May, 2014
Predicted PUE 1.12
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Data Center Space
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Center Aisle GDL2
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Mechanical System Improvements
• Increased Air Handling Capacity
• Incorporated Washable Outside Air Pre-filters
• Improved Air Distribution
• Eliminated Cooling Systems for Electrical Distribution Rooms
• Eliminated Evaporative Humidification Systems
• Selected More Efficient Fan Wheel
• Changed to Operable Window System Vs. Louver/Damper System
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Air Handling Capacity
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Washable Pre-Filters
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Actual Performance: 2013 Free Cooling
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Improved Air Distribution
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Air Flow Through End of Hot Aisles
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Eliminated Electrical Room Air Conditioning
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Operable Window System for Exhaust
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Exterior View (open)
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9
Interior View (closed)
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Interior View (open)
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Summary and Recommendations
Containment w/ Pressure Control Allows for High Density
(and low construction cost)
Air Side Free Cooling Required for Low PUE
Sustainable Data Centers
• Low Energy Use
• Recycled Materials
• Non Potable for Cooling Tower Make-up
• Low Construction Costs
Supplier (A/E, GC) Selection is Critical Success Factor
Phased Construction Provides Flexibilty
(first cost and purchasing)
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Thank you
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