Cooling datacentres and a other stuff

Ole KjærgaardTechnical Director,Mail: Ole.Kjaergaard@uni-c.dk

First some facts

UNI•C - Danish IT Centre for Education and ResearchUNI•C is an agency under the Danish Ministry of Education. UNI•C delivers a variety of IT services to the educational and research communities. More than one million users regularly benefit from UNI•C’s services and products.UNI•C has more than 300 employees, and offices in Copenhagen, Lyngby and Aarhus.

Our green approach

The datacentre (approx. 1.500 sqm.)Finding power consuming devices Awareness campaignsIntelligent houses

The datacentre

Optimizing air-flowCold and hot aislesPlacing down-flow units

Optimizing cooling machinesFree coolingControlling the cooling machines

Use IT equipment with low power consumptionRemember to turn off old equipmentVirtualize Know your power consumption

Cooling machines

Free coolingIntelligent control

Increase water temp.

Before and after optimization

Cooling in the datacentre

Increase air temp.

Placing down-flow units

Finding optimal places for down-flow units

Power Usage Effectiveness - PUE

PUE is the total power consumption in the datacentre (incl. UPS, cooling etc.) divided by the consumption from the IT equipment. A typical value in older datacentres is a PUE-value between 2,0 and 2,5. PUE=2 means that for each Watt spend on the IT equipment, another Watt is used in UPS, cooling etc.

Our PUE

What is your power consumption?

The IT guys do typically not know the power consumption in the data centreThe power bill is normally paid by the ones responsible for rent, cleaning etc.But this is not the case at UNI•C…

Finding equipment that uses power (looking for sources of heat)

Example

Which machine has the highest stand-by consumption?

Results…

PrintersXerox multifunction (daytime) 93 WHP Color 4700 17 WHP Color 3700 14 WHP S/H 2200 11 W

Mailing/postage machine 7 WFax 37 W

Awareness campaigns

Buy some (good) energy metersDistribute them!

My office PCGuess the power consumption?

The answer is…

140 WRemember to turn the PC off at the end of each working dayDo not use screensavers with pcitures on the screen (NO flying windows…)Use remote desktop/terminal servers for home/remote work

Intelligent houses

Connecting light and access control/alarmUse standby functions (Coffee makers, printers etc)Simple things (on/off timers)Motion detectorsLight sensors

General considerations

Think CO2 instead of energy consumptionUse green energy when possibleManufacturing also contribute to CO2

30% of the total CO2 emission from a car during its entire life comes from the production…

What do you do??

Questions or comments?