Five Power Trends on Their Way to Your Data Center Peter Panfil, VP Power Engineering Liebert Solutions, Emerson Network Power

Top 5 2007 Power Trends Energy efficiency is gaining importance New ways of scaling are emerging Two stage distribution is replacing single stage Demand for visibility and control is up Alternate high availability power configurations are offering benefits

Energy efficiency is gaining importance

New ways of scaling are emerging

Two stage distribution is replacing single stage

Demand for visibility and control is up

Alternate high availability power configurations are offering benefits

Energy Efficiency Is Gaining Importance

Energy Efficiency Is Gaining Importance

Source: EYP Mission Critical Facilities Inc., New York Data Center Power Draws

Energy Efficiency Is Becoming A Priority 42% of survey respondents have either analyzed efficiency or are currently analyzing efficiency Respondents perceived the greatest opportunities to be : Source: DCUG Survey Fall 2006

42% of survey respondents have either analyzed efficiency or are currently analyzing efficiency

Lawrence Berkeley National Laboratory Power systems in 400-500 volt DC data centers in test performed 5-7% more efficiently Cooling optimization can offer even more

Power systems in 400-500 volt DC data centers in test performed 5-7% more efficiently

Cooling optimization can offer even more

Tradeoff Between UPS Efficiency and Availability Has your data center availability improved or declined over the last three years? Source: DCUG Survey Fall 2006 85% - 95% Double-Conversion UPS 97% - 98% Power Distribution Unit Equipment Efficiency

Will You Sacrifice Availability for UPS Efficiency? Source: DCUG Survey Fall 2006 Would you be willing to make a sacrifice in the availability / reliability of your data center backup power for an increase in efficiency? 1% 2% 16% 41% 41% Powering the load through the static bypass switch without power conditioning until the UPS is needed 2% 2% 22% 43% 31% Using line-interactive UPS instead of a true-online double-conversion UPS 1% 4% 34% 38% 23% Putting excess UPS capacity modules into stand-by or sleep mode until needed Definitely Likely Possibly Unlikely Definitely Not 5 4 3 2 1

New Ways of Scaling Are Emerging

New Ways of Scaling Are Emerging

UPS Architectures Single unit - reliable & simple Stand Alone Standard units with fixed sizes that work together Cost savings by retaining initial investment Added redundancy Modular Flexibility with internal capacity expansion A unit with single direction for growth Scalable Flexibility that can deal with uncertainty (re-configurable) Adapts to changing requirements in capacity, density and availability A platform that works across the enterprise – small to large scale – with an optimized building block approach Lowest cost method for capital and operating expenses Adaptive Next step beyond modular and scalable…ADAPTIVE!

Unpredictable Growth Requires Configuring For Availability and Scaling For Capacity + 2N Dual Bus N+1 Centralized Bypass 1+N Distributed Bypass 1+1 Redundancy Scale for Capacity Concurrently Maintainable Data Center Fault Tolerant Data Center Redundant Component Data Center

Power Scalability Options Protect Initial Investment Add modules to a 2N Configuration Future Expansion + Future Expansion Add modules to an N + 1 Configuration Future Expansion Add capacity to installed modules 100% Initial Capacity 150% Potential Capacity

Aligns module size to desired expansion increments Allows for many different growth units If expansion increment is 80, don’t start with a module size of 10 Provides for lowest initial cost and total cost Larger kVA modules cost less: lower “hardware overhead” cost Provides for highest system reliability Fewer modules translates into less failures and less service Adaptive Architecture – UPS Module Optimization Cost kVA Economies of scale in power electronics A N Parts/module count vs. availability

Aligns module size to desired expansion increments

Allows for many different growth units

If expansion increment is 80, don’t start with a module size of 10

Provides for lowest initial cost and total cost

Larger kVA modules cost less: lower “hardware overhead” cost

Provides for highest system reliability

Fewer modules translates into less failures and less service

Two Stage Distribution Is Replacing Single Stage

Two Stage Distribution Is Replacing Single Stage

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