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A quick presentation on how to build a hyper energy-efficient data center using the Cork Internet eXchange data center as a case study
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Building a Hyper Energy-Efficient
Data CenterTom Raftery
Blog: www.greenmonk.netEmail: [email protected]
CIX
• Cork Internet eXchange - CIX• Irish hyper energy-efficient data centre
CIX Vision
• Energy-Efficient data centre• Why?• How?
Why? Climate change
Why?
• DC running costs• Staffing - controllable• Connectivity - decreasing• Energy - increasing
Why? DC Energy requirements
• Rack of equipment typically used• 1.5 kW 8 years ago• 4.5 kW 5 years ago and• 15 kW in 2006!
Optimal DC environment
DC Energy Flow
Max Chiller Temp
Max Temp
Minimise Humidification
Minimise Humidification
Minimise Water mixing
Water mixing
Minimise air mixing
Air mixing
Typical DC
Cold Aisle Containment
Free Cooling
Free Cooling
Free Cooling
Also
• Dimplex heat exchange unit• Servers heat the CIX offices!
• Low resistance, slow speed air paths
Geek Porn
Geek Porn
Also
• NegaWatts• Charge customers
Geek Porn
Power
• 10kv low impedence looped connection to the national grid
• Using GE Super ECO UPS’s offering >98% efficiency
Geek Porn
Power
•Normal mode• The output voltage is newly generated,
independently from the input voltage• Heat losses are present in rectifier and inverter
•Super Eco Mode• Load is supplied via the bypass• UPS rectifier keeps the battery charged• UPS inverter switched off
(no heat losses)
Super Eco Mode
Normal mode
Inverter
DC
Battery bank
AC
ACDC
Static bypass
Rectifier
Bypass supply
LoadRectifier
supply
Inverter
DC
Battery bank
AC
ACDC
Static bypass
Rectifier
Bypass supply
LoadRectifier
supply
Transf.Good!
End Result
Standard DC CIXChiller
HumidifierCRAC
IT EquipmentPDUUPS
LightingSwitch Gear
33% 12%3% <1%9% 4%30% 80%5% 0.01%18% <2%1% <1%1% 1%
Conclusion
• Simple steps taken• Large savings and USP
References
• Uptime Institute - www.upsite.com
• APC - www.apc.com
• GE - www.ge.com
• CIX Energy Efficiency White Paper - www.cix.ie/air-conditioning-efficiency-at-the-cix-data-centre
