1. Energy efficiency – in focus

2. Design and Efficiency – DELL™ AX4-5 2 Power consumption:345 Watt* Heat emission:1535 BTU/h* Power consumption a TB:38,3 Watt Heat emission a TB:170,6 BTU/h * Manufacturer information, with maximum additional disks Energy efficiency – in focus

3. Design and Efficiency – DELL™ AX4-5 Cooling system:  Power supply fan produces airflow  For each power supply there are two fans embedded in different places  Flat cooling elements Effect:  The airflow is divided inefficiently because cooling elements are covered by just one part of the airflow  In case of a single fan breakdown, second unit needs to compensate function. Result: Higher load to hardware 3 Ventilation holes for the power supply Rear with ventilation holes Energy efficiency – in focus

4. Design and Efficiency – HP MSA 20xx 4 Power Consumption:475 Watt* Heat emission:1622 BTU/h* Power Consumption a TB:39,6 Watt Heat emission a TB:135,1 BTU/h * Manufacturer information, with maximum additional disks Energy efficiency – in focus

5. Design and Efficiency – HP MSA 20xx 5 Ventilation holes for the power supply Open rear Cooling System:  Power supply fan produces air flow  Intelligent air conduction between controllers and power supplies through the ventilation holes  Big cooling elements attached to the connection holes  For each power supply two redundant fans built in a row Effect:  Intelligent conduction of the air flow  In case on a single fan breakdown, no further power consumption therefore no expected hardware damages Energy efficiency – in focus

6. Design and Efficiency – IBM DS3400 6 Power consumption:361 Watt* Heat emission:1235 BTU/h* Power Consumption a TB:30,1 Watt Heat emission a TB:102,9 BTU/h * Manufacturer information, with maximum additional disks Energy efficiency – in focus

7. Design and Efficiency – IBM DS3400 Cooling system:  Power supply fan produces airflow  For each power supply two redundant fans embedded in different places  Very flat cooling elements  Memory looms into the airflow Effect:  Inefficient air division - cooling elements get covered by just one part of the airflow – however good positioning of the memory  In case of a single fan breakdown, second unit needs to compensate function. Result: Higher load to hardware Energy efficiency – in focus 7 Ventilation holes for the power supply

8. Design and Efficiency – FSC FibreCAT SX8x 8 Energy efficiency – in focus Power consumption:475 Watt* Heat emission:1622 BTU/h* Power consumption a TB:39,6 Watt Heat emission a TB:135,1 BTU/h * Manufacturer information, with maximum additional disks

9. Design and Efficiency – FSC FibreCAT SX8x Energy efficiency – in focus 9 Ventilation holes for the power supply Open rear Cooling system:  Power supply fan produces airflow  Intelligent air conduction between the controllers and the power supplies through the ventilation holes  Big cooling elements attached to the connection holes  For each power supply two redundant fans built in a row Effect:  Intelligent and effective air conduction  In case on a single fan breakdown, no further power consumption therefore no expected hardware damages

10. Overview – Power and Heat Data Power consumption Heat emission Power consumption a TB Heat emission a TB 345 Watt1535 BTU/h38,3 Watt170,6 BTU/h 475 Watt1622 BTU/h39,6 Watt135,1 BTU/h 361 Watt1235 BTU/h30,1 Watt102,9 BTU/h 475 Watt1622 BTU/h39,6 Watt135,1 BTU/h 9/3/2015 10 Energy efficiency – in focus

11. Overview – Energy efficiency Power consumption / TB Heat emission / TB Air duct 03.09.2015 11 Energy efficiency – in focus