Power Usage Effectiveness (PUE) & Data Center Infrastructure Efficiency (DCiE) Progress
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1 Power Usage Effectiveness (PUE) & Data Center Infrastructure Efficiency (DCiE) Progress Dan Azevedo, Symantec Jon Haas, Intel Jud Cooley, Sun Microsystems, Inc. Mark Monroe, Sun Microsystems, Inc. Pam Lembke, IBM
2 Agenda PUE / DCiE Background & Next Steps DCiE Detailed Analysis PUE / DCiE Usage & Public Reporting Guidelines PUE / DCiE Calculation Tool Free Cooling Map Power Configuration Calculator 2
3 PUE / DCiE Background & Next Steps 3
4 DCiE Detailed Analysis Dan Azevedo, Symantec 4
5 Executive Summary The DCiE Detailed Analysis is to support and strengthen the Data Center infrastructure Efficiency (DCiE) metric. The intent is to enable data center managers collectively to derive and use DCiE as a global standard metric. 5
6 DCiE Detailed Analysis This White Paper represents the first in a series that will provide a more detailed analysis of the PUE / DCiE Metric and represents the Basic level in the below table with the assumption of a dedicated data center facility: IT Equipment Power Measurement From Total Facility Power Measurement From Minimum Measurement Interval Level 1 (Basic) Level 2 (Intermediate) Level 3 (Advanced) UPS PDU Server,. Data Center input power Data Center input less shared HVAC Data Center input less shared HVAC plus building lighting, security Monthly/Weekly Daily Continuous (xx min) 6
7 DCiE Detailed Analysis 7
8 DCiE Detailed Analysis 8
9 DCiE Detailed Analysis Table of Contents Introduction Background and Assumptions DCiE Overview DCiE Subcomponents Obtaining Required Data Estimating Power Consumption Measuring Power Consumption Power Metering Requirements Factors Affecting DCiE Dynamic Data Center Type of Data Center Climate and Location Data Center Design and Operation Measurement Period Sometimes DCiE Seems To Go The Wrong Way Driving DCiE Efficiency DCiE and Future Technology Advancements Multiuse Facilities Summary Conclusion 9
10 Summary This paper provides: Prescriptive information on how to calculate the efficiency metrics Multiple levels of implementation which enables a very simple basic approach to as much depth and complexity as desire Equipment categorization: infrastructure vs. IT equipment Power metering requirements Guidance on interpreting the metrics High-level guidance on multi-use facilities 10
11 Usage And Public Reporting Guidelines for The Green Grid s Infrastructure Metrics Jon Haas, Intel 11
12 Reasons for Guidelines PUE/DCiE have become commonly used metrics for data center efficiency Factors such as environmental conditions, a data center s physical characteristics, and timing and frequency of measurements can play a significant role in final results In addition, some individuals and organizations have used these metrics to promote design ideas that, while valuable, can provide misleading results Standard guidelines for the use and reporting of these metrics will: Enable a common language and nomenclature to compare results provide a process to support accurate, consistent results Provide additional transparency and accountabilitly in the process of measurement for public claims In addition, these guidelines will support The Green Grid in: develop an auditing/certification process for the industry around these metrics develop a recognition program for those organizations showing strong results and/or improvements in data center energy efficiency 12
13 Publicly reporting your Data The Green Grid will provide a means for organizations to publicly report their measurements record their PUE/DCiE measurement data to The Green Grid provide background information about the data center, reporting the results and the manner in which, and conditions under which, that data was collected provide a means to report any issues or difficulties in following TGG s proscribe processes and guidelines The Green Grid will also provide a portal through which organizations can view summary details on publicly reported PUE and DCiE results This portal will provide summary data on all registered reported results All reported results meeting TGG guidelines will be given a registration number that can be referenced A subset of provided data will be publicly visible (see appendix 2 of WP or consent form) TGG will offer members the opportunity to provide a link to additional information about their result or data center via additional optional reporting Organizations reporting results have the option to participate in TGG awards or recognition programs by complying with additional requirements 13
14 Classes of Measurement Results Class Description Benefit to Reporting Organization Unrecognized Reported Registered Certified 14 A publicly reported result with no claims of following TGG s guidelines. TGG will not comment on unrecognized results. A publicly reported result by the reporting organization claiming they followed TGG s measurement recommendations and nomenclature guidelines. TGG will not comment on Reported results. A publicly reported result, with key report contextual data provided to TGG by the reporting organization to TGG s data center performance database. A publicly reported result, with key additional data required for third-party validation or certification of results, provided to TGG by the reporting organization. Reporting organization can use standard materials from The Green Grid to explain process and results to audience. Official registration of reported result. Receipt of a registration number from TGG. Link to public report data from TGG s website. All benefits applicable to registered results, plus, consideration of reported results in future TGG award or recognition programs.
15 Usage and Reporting Guidelines To receive a PUE or DCiE registration number from The Green Grid: Follow The Green Grid s measurement guidelines in the most recent revision of DCiE Detailed Analysis Report the process through which the data was collected (L1, L2, L3) using the nomenclature in the most recent revision of Usage and Public Reporting Guidelines for The Green Grid s Infrastructure Metrics Report your measurement data and input the required information into the Green Grid s Metrics Data Collection Database ( Agree to The Green Grid s metrics public reporting consent form If requesting to be considered for a TGG award, provide the extended data set information into the Green Grid s Data Collection Database for certified measurements Additionally Report to The Green Grid any issues or difficulties in following TGG s proscribed processes and guidelines (optional, co-promotion ) send the PUE or DCiE registration number, along with a link to any original source material or publication, to TGG at admin@thegreengrid.org 15
16 PUE/DCiE Nomenclature Structure All PUE and DCiE measurements should be reported with subscripts that identify: The accuracy level of the measurement See The Green Grid s Metrics: Data Center Infrastructure Efficiency Detailed Analysis The timeframe of the measurement E.g. yearly, monthly, weekly, daily The granularity of the measurement Frequency with which the data was collected E.g., monthly, weekly, daily, continuous Official PUE/DCiE reports will provide these information with subscripts appended to the Metric i.e. PUE x,y or DCiE x,y, where x describes the Level of the measurement (L1, L2, L3) L1, L2, and L3 are defined in the TGG White Paper: The Green Grid Metrics: Data Center Infrastructure Efficiency (DCiE) Detailed Analysis y describes the Timeframe and Granularity of the measurement y = timeframe identifier + frequency identifier 16
17 Measurement Accuracy Reporting (from DCiE Detailed Analysis WP) IT Equipment Power Measurement From Total Facility Power Measurement From Minimum Measurement Interval Level 1 (Basic) Level 2 (Intermediate) Level 3 (Advanced) UPS PDU Server,. Data Center input power Data Center input less shared HVAC Data Center input less shared HVAC plus building lighting, security Monthly/Weekly Daily Continuous (xx min) 17
18 Measurement Timescale and Granularity Reporting The y subscript on PUE or DCiE denotes the Timeframe and Granularity of the measurement y = timeframe identifier + frequency identifier [ M, W, D, C ] Frequency identifier: M for measurements taken monthly W for measurements taken weekly D for measurements taken daily C for measurements taken continuously (with frequency one hour or less) Except for those measurements collected with continuous data, all data points that are averaged in the final measurement must be taken at the same time of day Single measurements are reported with no frequency identifier 18
19 Example Reported Results 0.45 DCiE L1,-- Single DCiE measurement (0.45) taken using a Level 1 meter placement 0.51 DCiE L1,YM Yearly average DCiE (0.51), using data points gathered monthly with a Level 1 meter placement 1.6 PUE L1,MW Monthly average PUE (1.6) using data points gathered weekly with a Level 1 meter placement 0.43DCiE L1,WD Weekly average DCiE (0.43), using data points gathered daily with a Level 1 meter placement 1.8 PUE L2,WC Weekly average PUE using data points gathered continuously with a Level 2 meter placement. 2.1 PUE L3,YC Yearly average PUE (2.1) using continuous measurements with a Level 3 meter placement. 19
20 Specific Reporting Issues PUEs of < 1.0 and DCiEs of > 1.0 are *not* allowed Elements that go into the calculation Power consumed by IT equipment Power lost in distribution Power consumed by cooling equipment These elements are always 0 Accounting for re-use of waste heat Waste heat re-use *does not* get included in either PUE or DCiE TGG will look into creating an additional metric to cover this 20 Accounting for power generated on site PUE / DCiE is meant to cover areas of energy use in the data center Generation of power on-site is not incorporated into either the power distribution losses or cooling equipment requirements As such, it should not be considered in the PUE/DCiE calculation
21 Conclusion We are driving the right behaviour! The Green Grid Metrics for data center efficiency are gaining widespread adoption, use and visibility Organizations are publicly reporting their measurements and claiming highly efficient operations The Green Grid is implementing public reporting guidelines that includes standard processes and nomenclature to make the measured results more transparent and consistent Stay away from PUEs of < 1.0 and DCiEs of > 1.0, they are not viable 21
22 PUE Calculation Tool Jud Cooley, Sun Microsystems, Inc. 22
23 Rationale and Objectives Sponsor: Container Assessment Task Force to allow case study comparisons Easily and accurately compute PUE In a consistent manner Allowing for apples-apples comparisons Container boundaries Building or room boundaries Web based One sheet printed report Data archival/retrieval 23
24 PUE with Physical boundaries Management reporting to visualize overhead Power: Transfer Switch, UPS, Transformer, Generator, Lighting, etc. Cooling: Tower, Condenser, Chiller, Pumps, etc. Other: Fire Supression, Control, Security, etc. IT Equipment: Servers, etc. Facility equipment: air movers, power distribution, UPS, etc. IT Equipment: Servers, etc. Facility Boundary Container or Room Boundary 24
25 Web screen shot example (Spreadsheet Prototype, artificial data) Facility (kw) Seq Class Type Detail 1 Facility Power Transfer Switch 2 Facility Power UPS Facility Power DC Batteries / Rectifiers (non UPS Telco Nodes) 4 Facility Power Generator 5 Facility Power Transformer (step down) Facility HVAC Chillers Facility HVAC Return Fans IT Equipment Compute Devices Servers IT Equipment Network Devices Switches 32 IT Equipment Network Devices Routers 40 IT Equipment Other Other Total Facility + IT Power Total IT Power Total Facility Power (kw) 91.0 Total IT Power 54.0 PUE 1.69 DciE 0.59 Total Power (kw) at Container Boundary 59.0 Total IT Power in Container 52.0 Partial PUE (Container Boundary) 1.13 Partial DciE (Container Boundary) 0.88 Container (kw) 25
26 Output Single page PDF output Fileable report identifying configuration, date, data Useable for direct apples-apples comparisons Data saved in csv or a Data Base format TBD based on development discussion Consistent with other Green Grid tools Importable into spreadsheet Re-loadable 26
27 Controversy over air movers Fan-less servers with rack fans rely on those fans Rack-based air movers might be considered either IT or facility depending on your point of view Proposed position is that the air mover power is part of the IT equipment Needs to be discussed in Committees PUE Calculator Tool will allow a separate line to enter air mover power that is not included inside the physical boundary of the server, yet is required for the IT operation (to expose the ambiguity). That power will be allocated to IT, but will be left visible in the tool and the output. 27
28 Status and Timing Consultants hired In development now Alpha version to be tested by Green Grid Task Force members in Q Beta and release target is for Q
29 Free Cooling Map/Web Tool Mark Monroe, Sun Microsystems, Inc. 29
30 Concept and Features Estimate the number of hours of free cooling that may be possible based on weather data at any location in the U.S. Consider European and APAC data in the design so that data can be added in the future without major changes to the application or database. Climate data will be analyzed to determine the number of hours per year that either fresh air or evaporative cooling might be used in a data center. 30
31 Concept and Features (cont d) Two colorful maps must be produced; one showing the U.S. color-coded to show the number of hours of fresh air cooling possible, the second map will show the U.S. color-coded to show the number of hours of evaporative cooling possible. 31
32 Concept and Features (cont d) 32
33 Concept and Features (cont d) A web tool must be produced which allows a user to enter their own location, via zip code, and the data center set points for temperature and humidity that they which to examine for hours of free cooling 33
34 34
35 RFP Responses weatherbank.com selected to implement Response within budget estimates Approved by Board 21 Jan 09 Prototype ready now Seek approval from TC and Board in Feb Release in March 35
36 Roadmap/Futures 36 Individual maps available for $150 direct from weatherbank.com Feedback page allows users to consult directly Review in 3 months, determine enhancements Possibilities: European and APAC data/locations/calculations Simple model for water used by evaporative cooling Input location by latitude/longitude Redisplay map with user-input parameters Connect with DSIRE and other incentive databases More complex models, more accurate results
37 Power Distribution Configurations Online Efficiency Estimator Tool Pam Lembke, IBM 37
38 Tool Purpose The tool: Is for use as a companion to Qualitative Analysis of Power Distribution Configurations for Data Centers, TGG WP #4 and Quantitative Efficiency Analysis of Power Distribution Configurations for Data Centers, TGG WP #16 Reduces the need for paper rewrites, as the tool can be easily updated regularly Allows readers and users to test their own components and proposed system architectures
39 Features Users are able to: Compare two topologies at a time Input data points (load vs efficiency) of their own components for the calculations Create their own topologies based on their components or predefined TGG components Save components and topologies Print input and results in PDF Tool will automatically calculate full efficiency curves for components end-to-end efficiency curves for the two topologies
40 Tool Mock Up
41 Availability The tool is scheduled to be available around Q It will be accessible to members only via The Green Grid website
42 Thank you for attending The 2 nd Annual Green Grid Technical Forum For more information, please visit 42
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