Kevin burke apc
- 1. Power Delivery in Today’s Data Center On-Demand Architecture for Network Critical Physical Infrastructure Kevin P. Burke, P.E. Critical Systems Manager – Southeast Region Kevin.Burke@schneider-electric.com 704-821-0524 All content in this presentation is protected – © 2008 American Power Conversion Corporation
- 2. Agenda ● Present State of Affairs, Glimpse of the Future for Data Center Power Requirements. ● Efficiency Improvements and Path to Savings ● Higher Voltage Options for Data Center Distribution APC by Schneider Electric
- 3. IT Changes and Mechanical/Electrical Load Impacts APC by Schneider Electric
- 4. High Density Computing 35 Per Rack Power Density (KW) 30 25 Max per-rack IT Load 20 15 Data Center rated 10 rack power capacity 5 0 Year IT Loads are greatly exceeding rated capacity! APC by Schneider Electric
- 5. Needs for the Future Now! ● Support for Higher Density Loads. ● High Density Zones ● kW per Rack vs Watts per Ft2 ● Higher Overall Building Efficiency. ● Improved Efficiency of Every Aspect of Data Center Power Consumption. ● Green Solutions. ● Reduced Environmental Impact ● Reduce – Recycle - Reuse ● Rapid Deployment and Relocation. ● Changing Face of Economy • Mergers & Acquisitions • Compaction, Consolidation APC by Schneider Electric
- 6. A standardized way to specify density Specifying Density Traditional Same 500 kW data center – but different “average way density” depending on how calculated: 746 watts/ft2 Ambiguous 179 watts/ft2 • Include access area around racks? • Include back-room area? 119 watts/ft2 • Consider total mains power consumption ? 189 watts/ft2 White paper 120 APC by Schneider Electric
- 7. A standardized way to specify density Specifying Density Traditional Same 500 kW data center – but different “average way density” depending on how calculated: 746 watts/ft2 Ambiguous 179 watts/ft2 • Include access area around racks? • Include back-room area? 119 watts/ft2 • Consider total mains power consumption ? 189 watts/ft2 A better way Total IT power 5 kW/rack = # of racks ● Eliminates the ambiguities of watts/ft2 White paper ● Allows different densities for different areas 120 of the data center APC by Schneider Electric
- 8. 1 Spread the load Cooling strategies: 2 Supplemental cooling 3 High-density zone High-density zone 4 Whole room ● A “mini data center” with its own cooling ● Contributes no heat to ● Hot/cool air circulation localized within rest of data center the zone by short air paths and/or ● Works with existing containment room-based cooling ● Achieves optimal efficiency APC by Schneider Electric
- 9. High Efficiency UPS ● Most UPS Manufacturers are Striving for Higher Efficiencies in Standard Designs Today. ● On-Line UPS modules available with efficiencies as high as 96% at 100% Load. ● Flatter Efficiency Curves At Lighter Loads. ● More “Right Sized” Designs. APC by Schneider Electric
- 10. Efficiency Savings through Scalability ● Parallel for capacity or ● Parallel for capacity or redundancy redundancy ● 4000 amps system bus ● 4000 amps system bus ● 4 X 800 kVA/720 kW UPS ● 2 X 1600 kW Scalable UPS ● Average load of 40 – 60% ● Average load of 40 – 60% ● UPS load at 50-55% has ● UPS sized to ~ 80% of load Efficiency ranges from 91% with an efficiency of around to 94% 97% ● At a loading of 55%, a 2880 kW ● At a loading of 1600 kW (50% system (1600 kW load), with an system load), each module can be efficiency of 91% will have kW initially populated to 1000 kW. losses of 158 kW ● Each module, loaded to 80%, with ● At a kWh rate of $0.07, 158 kW of an efficiency of 97% will have losses translates to $96,886 per system kW losses of 49 kW. year ● At a kWh rate of $0.07, 49 kW of losses translates to $30,047 per year. 6 points of efficiency improvement saves $66,839 per year in electrical costs APC by Schneider Electric
- 11. UPS Load vs. Capacity Day 1 Capacity for Day 1 Loads Day 2 Capacity for Day 1 Loads Day 2 Capacity for Day 2 Loads APC by Schneider Electric
- 12. Typical North American Data Center Power Distribution Standard Configuration Utilizes PDUs to Transform UPS voltage to Server Power Supply Voltages 480 VAC, 3 Phase, 3 W + G to 208Y/120 VAC. Overall Rating of PDUs Can be 1.5 to 3 Times the System Rating. Even the Best PDUs Have Efficiency Losses Associated With Them. Weight and Footprint Considerations in the Data Center White Space. Heat Losses Associated with XFMR 208Y/120 VAC. Five Conductors, A, B, C, N, G, Higher Amperage APC by Schneider Electric
- 13. Typical 400 VAC Data Center Power Distribution 400 VAC Configuration Utilizes no PDUs to Transform UPS voltage to Server Power Supply Voltages 400Y/230 VAC, 3 Phase, 4 W + G to Rack. Distribution More Closely Sized to the System Rating. Single Autotransformer or 400 VAC UPS System can be used. Greatly Reduced Weight and Footprint Considerations in the Data Center White Space. No or Reduced XFMR Heat Losses 400Y/230 VAC. Five Conductors, A, B, C, N, G, Lower Amperage APC by Schneider Electric
- 14. Questions? APC by Schneider Electric