Saving up to 60 of Energy With The

Saving up to 60% of Energy With The Precision Cooling Smart. Aisle™ Configuration

Agenda l l What’s Containment? How to get Energy Efficiency? Focus on Emerson Network Power solution Energy saving: • • 2 In the Row cooling Floor Mount Direct Expansion Chilled Water System

What’s Containment? What does “Containment” mean? What can be “Contained”? HOT COLD It means to contain different zones using mechanical and real barriers • 3 Hot Aisle Cold Aisle Hot & Cold Aisles

Why Containment? Air always goes the easiest way! Without containment there is a fast recirculation of warm air from the rear side of racks to their front side • 4

Traditional Air Cooling Troubles 10°-15°C • 5

The First Step: Containment 20° 26°C • 6

Containment: How To Provide Energy Efficiency? Qi Qi Q Qi Qi Qi High energy efficient solutions have to control the airflow in order to have the following: How to control the airflow? S Qi = Q PRESSURE control in the raised floor PRESSURE control at rack level • 7

Why Not Just Containment? l l l • 8 Servers are not getting enough air Risk of hot air intrusion into cold aisle Over-blowing server fans Low efficiency Reducing server fans lifetime

Containment: Pressure Control In The Raised Floor l l Airflow is controlled to meet servers’ required flow Airflow is controlled using pressure sensor and variable speed fans are needed What about this solution? High Availability • • l Lower Energy Efficiency • • • 9 In case of Unit failure In case of gaps in access floor tiles Higher pressure in the floor void Overpressure in Cold Aisle Emerson Network Power can offer this solution too…. anyway we prefer to suggest a more EFFICIENT solution, having the control in front of servers! See next slides

Pressure Control At Rack Level The space inside the containment can be compared to a glass of water. We have to grant it is always full of water: not too little, not too much! Patented Solution • 10

Smart. Aisle™ Control Logic l l • 11 Max 3 x. T&H sensors for temperature and humidity reading Each value, Temperature and Humidity, can independently be enabled for controlling Sensors are located in the calibrated holes The average or the highest value is calculated in accordance with the number of enabled sensors

Smart. Aisle™ VS Competitors: Airflow Control Simple Containment with Pressure Control Be The Critical Difference !! Too Low Airflow Unit Airflow = Server Airflow No risks for Hot Spot, Hot Air recirculation Too High Airflow Unit Airflow matches Server Airflow No waste of any single Watt for moving useless air Common Cascade • 12 Smart. Aisle™ Smart Cascade: always works with EC Fan at minimum speed Save a lot of energy having EC Fans in their best working point

Smart. Aisle™ VS Competitors: Pressure Control Simple Containment with Pressure Control Be The Critical Difference !! Usually works with floor pressure >20 -25 Pa Minimized raised floor pressure (<15 Pa) No waste of any single Watt moving useless air Pressure in the cold aisle difficult/impossible to be maintained usually using overpressure • 13 Smart. Aisle™ No or Minimal overpressure in the hot aisle (<5 Pa) Servers Fans life is not impacted (no overpressure for server fans)

Smart. Aisle™ Control VS Competitors: Reliability Simple Containment with Pressure Control Smart. Aisle™ Be The Critical Difference !! Control temperature and humidity in the unit or near to it Control Temperature and Humidity in the Aisle Our Precision cooling units take care of customer’s servers Additional equipment (points of failure) like tubes and baffles plates in the raised floor Simple architecture: high reliability and redundancy. Up to 3 remote sensors per one unit to be connected Simpler means easier If Master fails each Unit works as standalone / basic level of Networking (depends on manufacturer) • 14 Unique solution: Floating Master The cooling system will always take care of IT equipment

Smart. Aisle™ : Best Efficiency for Aisle Contaiment l l Pressure control results on higher fan speed, more air losses and this impacts on System Efficiency Smart. Aisle provides the BEST EFFICIENCY in case of Aisle Containment White Paper Showing the Difference between Smart Aisle and Pressure Control • 15

Precision Cooling For Smart. Aisle™ In the Row (DX/CW) Perimetral Direct Expansion Perimetral Chilled Water Liebert® HPC and Liebert® PCW Data Center cooling Chillers • From 40 to 1600 k. W cooling capacity • Maximized free-cooling effect with new Liebert® HPC – max fluid temperature up to 26ºC Liebert® PCW /HPM • EC fan technology • Ideally suited for Smart. Aisle • Premium energy efficiency • 16 Liebert® CRV In the row data center cooling units • From 10 to 40 k. W cooling capacity` • Available in DX and CW version • EC fan and Digital Scroll technology • Up to 10 remote sensors per unit • Sophisticated control logic • 600 or 300 mm frame width • Cooling at the heat source Liebert® HPM Precision Cooling units • From 13 to 80 k. W cooling capacity` • Up to 3 remote sensors per unit • EC fan and Digital Scroll technology

Smart. Aisle™: In The Row Cooling Case Study 1: 90 k. W Thermal Load In the Row Direct Expansion l Increase in temperature means increase in capacity • • • l Compressor works at a lower modulation Fans work at a lower speed Lower consumption of fans and compressor Containment maximizes air utilization 30% Energy Saving 8. 188 € Yearly Saving (Saving calculated in comparison with Traditional In the Row solution without Containment and Emerson Network Power Control, load: 90 k. W, city Frankfurt) • 17 Chilled Water

Smart. Aisle™: Modulating DX Cooling Case Study 2: 300 k. W Thermal Load In the Row Direct Expansion l l Integrates the benefits of containment with the capabilities of the control for optimized cooling The control matches cooling capacity with heat load • • l Variable speed fans Variable capacity compressors Containment maximizes air utilization 60% Energy Saving 79. 322 € Yearly Saving (Saving calculated in comparison to Traditional DX Floor Mount AC fan solution without Containment and Emerson Network Power Control, load: 300 k. W, city Frankfurt) • 18 Chilled Water

How Do We Achieve Savings In the Row Direct Expansion Chilled Water l l • 19 Relation between pressure drop and airflow is exponential Any saving on airflow side will significantly decrease the fans power input Cooling capacity increases with increase in evaporating temperature Higher return air temperature means higher evaporating temperature = increased cooling capacity

Reduce Operating Costs: Case Study In the Row Direct Expansion Chilled Water • 20

Getting The Best Annual Efficiency In the Row Direct Expansion Smart. Aisle™ Solution: • • • Chilled Water Maximizes heat exchange Reduces the airflow exactly in line with server needs 7 x (D 5 DUA+2 x. HCR 51) All running FRANKFURT Solution Inves™ent Cost [€] Energy Cost [€/year] STD Floor Mount AC fan 93. 201 125. 266 Smart. Aisle™ 143. 478 45. 944 + Digital HPM Saving [€/year] Pay Back Time [years] TCO in 2 years [€/k. W] 1146 79. 322 0, 63 785 Smart. Aisle™ MORE THEN 60% of ENERGY SAVING with the servers fully under control !!! • 21

…What’s The Message? In the Row Direct Expansion l l With Smart Solution + Digital Scroll HPM you can save at least 793. 000 k. W/h year What does this mean? 25 m 3800 m 2 of Fotovoltaic Panels required to generate the Equivalent Power saved with Digital Aircooled 108 m • 22 Chilled Water 10% more than entire Colosseo surface !!

…What’s The Message? In the Row Direct Expansion l l With Smart Solution + Digital Scroll HPM you can save 372. 710 Kg CO 2 year What does this mean? Chilled Water An average of 12. 000 km is the average mileage per year of an European person FIAT 500 generates 119 g of CO 2 for 1 km. Savings introduced by Smart. Aisle™ + Liebert® HPM Digital, cooling down 300 k. W in Frankfurt is the equivalent of the CO 2 generated by 261 FIAT 500 261 Fiat 500 • 23

Smart. Aisle™: Chilled Water Cooling Case Study 3: 460 k. W Thermal Load In the Row Direct Expansion l l l Integrates the benefits of containment with the capabilities of the control for optimized cooling The control matches cooling capacity with heat load Containment maximizes air utilization • • Increasing the return air temperature to room cooling units, which consequently will increase also fluid temperature. Enlarging the delta T between air and fluid it’s possible to lower the fan speed, as the cooling capacity provided by room cooling unit is much higher. 63% on CRAC Unit 67% on Freecooling Chiller Energy Saving • 24 30. 740 € Yearly Saving Chilled Water Traditional Approach Smart. Aisle™ + PCW & Liebert ® Freecooling Chiller (Saving calculated in comparison to Traditional CW Floor Mount AC fan solution without Containment, Emerson Network Power Control and Freecooling Chiller)

Smart. Aisle™: Chilled Water Cooling In the Row Direct Expansion Liebert® HPC Chilled Water • Tot 97% Freecooling (+22%) 67 % Liebert® PCW Classic Case: Return air: 24°C – 50%RH Supply air: 14ºC Fluid T: 10°C - 15°C • 25 • Increased EER Smart. Aisle™: Return air: 36°C – 28%RH Supply air: 21ºC Fluid T: 20°C - 26°C

Liebert® HPC - Freecooling Usage Freecooling in Athens? LONDON Freecooling working hours Tinlet = 26°C PARIS 99% FRANKFURT ATHENS 97% • 26 99% 80%

Liebert® HPC - Energy Saving Freecooling in Athens with inlet water temperature at 26°C is equivalent to a Freecooling installed in Moscow with an inlet water temperature of 15°C l Increasing the water temperature • • • Maximise Freecooling operation minimize compressors operation Maximize the reliability Athens Load 450 k. W -4 2 % = € 33, 200 saving • 27

Humidity Control Mixed System CW + DX l l Working with water temperatures above 15°C means that the system will be not able to dehumidify In case customer has as well strict requirements for humidity control our solution • • G Version Liebert® HPC Freecooling Chiller Liebert® PCW • This will Maximize Energy Efficiency with Smart. Aisle solution (80% of Total Capacity) • Liebert® HPM Digital DX with Humidity control • Liebert® HPM Digital DX with Smart. Aisle software that will take care of humidity control. (20% of Total capacity) • 28

Fire Extinguishing NO standards available! l. DEKRA certificate (with Wagner, Siemens, customer) RESULTS: l. Early smoke detection • • l no changes necessary with cold aisle containment recommendation: standard position return temp. CRAC; optional rear door rack (faster detection, localization) Fire extinguishing • • no changes necessary (attention: local regulations) recommendation: adjust ratio gas volume room to raised floor/cold aisle Sprinkler is only for protection of the building (attention: US companies – insurance) l • 29

Smart. Aisle™ And Servers Availability l l • 30 Right working conditions for IT equipment Right air flow High reliability due to multiple sensors and master rotation Improved survival time during power/cooling outage

Smart. Aisle™ - No Fear Total outage of air-conditioning, response time x 2, 0 x 2, 5 x 2, 7 Leakages, 100% fan speed No improvements • 31 Leakages sealed Blanking panels Optimized fan speed Aisle doors installed Grating tiles – high perforation tiles installed Smart. Aisle™

Smart. Aisle™ Value For Customer l l l • 32 Maximized Efficiency Flexibility for future growth Intelligent Control - always the right conditions Higher density – saving on footprint and size of the equipment High Reliability Unique Solution

Smart. Aisle™ - Complete Solution Smart. Aisle™ Containment Cooling Power Liebert® APM Liebert® HPM, PCW Infrastructure Management Liebert® CRV Liebert® HPC Racks Liebert® DCM Avocent Serial Console Avocent Service Processor Manager Avocent KVM Switch Monitoring Liebert® RMS Liebert® i. Com Detectors Avocent Data Center Planner Avocent DS View • 33 Sensors Liebert® Nform Rack PDU Knürr DI strip Liebert® MPX, MPH Avocent PM

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