The presentation I gave at the 2008 Plugg conference on reducing the carbon footprint of data centers

1. Creative ways of
reducing your
Carbon Footprint
Tom Raftery
Blog: cix.ie / tomrafteryit.net / lowerfootprint.com
Podcast: www.podleaders.com
Email: tom@tomrafteryit.net

2. CIX
• Cork Internet eXchange - CIX
• First hyper energy-efficient data centre

3. Geek Porn

4. Geek Porn

5. Geek Porn

6. Geek Porn

7. Geek Porn

8. Geek Porn

9. CIX Vision
• Energy-Efficient data centre
• Why?
• How?

10. Why? Climate change

11. Why?
• DC running costs
• Staffing - controllable
• Connectivity - decreasing
• Energy - increasing

12. 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!

13. Optimal DC environment

14. DC Energy Flow
Free Cooling

15. DC Energy Flow
Max Temp

16. DC Energy Flow
Minimise
Humidification

17. DC Energy Flow
Water mixing

18. DC Energy Flow
Air mixing

19. Typical DC

20. Also

21. Also

22. Also
• Low resistance, slow speed air paths
• Dimplex heat exchange unit
• Servers heat the CIX offices!

23. Power
• 10kv low impedence looped
connection to the national grid
• Using GE Super ECO UPS’s
offering >98% efficiency

24. !
Power
o d
Normal mode
Bypass
Static bypass
supply
o
•Normal mode
• The output voltage is newly generated, Rectifier Inverter
independently from the input voltage
Rectifie AC DC Load
• Heat losses are present in rectifier and inverter r
G
DC AC
supply
Battery bank
•Super Eco Mode
• Load is supplied via the bypass Super Eco Mode
• UPS rectifier keeps the battery charged
Bypass
• UPS inverter switched off supply
Static bypass
(no heat losses)
Rectifier Inverter Transf.
Rectifie AC DC Load
r DC AC
supply
Battery bank

25. End Result
Standard DC CIX
Chiller 33% 12%
Humidifier 3% <1%
CRAC 9% 4%
IT Equipment 30% 80%
PDU 5% 0.01%
UPS 18% <2%
Lighting 1% <1%
Switch Gear 1% 1%

26. Conclusion
• Simple steps taken
• Large savings and USP

27. my 2 minute pitch
• Social media consultant
• Green IT evangelist
• Blogger, podcaster, speaker
• For hire!

28. Thanks
Tom Raftery
Blog: www.tomrafteryit.net
Podcast: www.podleaders.com
Email: tom@tomrafteryit.net