PUE Reconsidered - AFCOM (MI), July 2009
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An exploration of the benefits and limitations of the popular Power Usage Effectiveness (PUE) metric, for gauging datacenter efficiency. How to avoid the pitfalls inherent in the definition of PUE; and some suggested means by which the PUE concept can be enhanced in real-world applications. CORPORATE PLUG: For more information about how Raritan helps solve this problem, I encourage you to see: http://www.raritan.com/resources/screenshots/power-iq/
![PUE Reconsidered ,[object Object],[object Object],[object Object],[object Object],Utility + Limitations of PUE / DCiE as a Datacenter Efficiency Metric Henry Hsu • Raritan, Inc. Solutions Consulting, Datacenter Efficiency Henry.Hsu@raritan.com • (732) 764-8886 x1273](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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PUE Reconsidered - AFCOM (MI), July 2009
- 1. PUE Reconsidered Utility + Limitations of PUE / DCiE as a Datacenter Efficiency Metric 29 July 2009
- 3. Open Secret: Datacenter electrical costs are skyrocketing… $ B I L L I O N S M I L L I O N S O F S E R V E R S
- 4. … fueled by an explosion in power / heat densities
- 6. But first, we need to understand the problem… Source: EYP Mission Critical Facilities Inc., New York Typical Real-World Energy Allocation in Today’s Datacenter
- 7. … so The Green Grid proposed PUE as a benchmark in Feb’07 “ Green Grid Data Center Power Efficiency Metrics: PUE and DCiE”; by Christian Belady, et. al.; www.thegreengrid.org PUE = Power Usage Effectiveness = Total Facility Power IT Equipment Power DCiE is the exact same thing , but expressed as an inverse: DCiE = Datacenter Infrastructure Efficiency Total Facility Power IT Equipment Power = 1 PUE =
- 8. PUE is extremely valuable as a broad efficiency ratio… PUE = Power Usage Effectiveness = Total Facility Power IT Equipment Power PUE = 1 MW 0.5 MW = 2.0 “ My total facility consumes 2x the power of the IT equipment load.” DCiE = PUE 1 = 0.5 “ Roughly 50% of the power in my facility is used to power IT equipment.” EXAMPLE: Typical 1MW Facility
- 13. Green Grid recognizes that PUE is not a panacea Proposed: In the long-term, create a business-oriented metric Proposed : Three “levels” of PUE sophistication DCP = Datacenter Productivity = “ Useful Work” Total Facility Power
- 14. To solve the real problem, we need to measure it… Uptime Institute, “4 Metrics That Define Data Center Greenness”
- 15. … including environmental information Source: ASHRAE, “Thermal Guidelines for Data Processing Environments”
- 20. Questions / Comments / Discussion
- 21. Thank You! Henry Hsu • Raritan, Inc. Solutions Consulting, Datacenter Efficiency Henry.Hsu@raritan.com • (732) 764-8886 x1273
Notas do Editor
- Market problems, landscape, trends, growth Power cost issue (and associated cooling issues) Data center growth chart Power cost growth chart Power cost vs. Industry chart Solution portfolio Yes, it costs more, BUT there is VALUE It’s not just about the bits and features Outlet metering, so what? Enter PowerIQ Distinctive product solutions The story resonates Today (“my a lot has changed since we last met”) PX single phase, 3 phase PM series RPC Power IQ Roadmap PX no switching High power for blades Inline meters High density BTO/ETO (show building blocks) Integration with 3 rd parties Key learnings Target customer Facilities vs. data center ops vs. IT Where we are currently at wrt product lifecycle and what that means Example deal, show PO from RA with strips, PIQ, sensors Great Opportunity of legacy customer base and new customer Show growth chart 2 instances at AFCOM, MCA Greater opportunity from new customers JPMC, AVCT shop still opportunity for power Cite all the data center build-out examples going on Gives you new beach-head for KVM Easier door opener b/c people want to talk about it. It is the issue of the day. What next? Learn Leverage, We’ve got resources, don’t let stone unturned, I’ll get on a plane. Sell more power
- Market problems, landscape, trends, growth Power cost issue (and associated cooling issues) Data center growth chart Power cost growth chart Power cost vs. Industry chart Solution portfolio Yes, it costs more, BUT there is VALUE It’s not just about the bits and features Outlet metering, so what? Enter PowerIQ Distinctive product solutions The story resonates Today (“my a lot has changed since we last met”) PX single phase, 3 phase PM series RPC Power IQ Roadmap PX no switching High power for blades Inline meters High density BTO/ETO (show building blocks) Integration with 3 rd parties Key learnings Target customer Facilities vs. data center ops vs. IT Where we are currently at wrt product lifecycle and what that means Example deal, show PO from RA with strips, PIQ, sensors Great Opportunity of legacy customer base and new customer Show growth chart 2 instances at AFCOM, MCA Greater opportunity from new customers JPMC, AVCT shop still opportunity for power Cite all the data center build-out examples going on Gives you new beach-head for KVM Easier door opener b/c people want to talk about it. It is the issue of the day. What next? Learn Leverage, We’ve got resources, don’t let stone unturned, I’ll get on a plane. Sell more power