Low PUE data centre

Deltalis helps Corporate Social Responsibility programmes by avoiding unnecessary carbon pollutionPower Utilisation Effectiveness is a metric used to judge data centre efficiency. It is calculated by dividing the power entering the centre by the power used to run the IT load. Old legacy data centres had a very poor PUE of 2.5+, equivalent to 80% of the power being used for services such as cooling, ups and lighting. New builds over the last two years are now quoting much improved PUE of 1.5 or less.

Deltalis’ infrastructure has been put in place over recent months and uses some of the most modern energy saving technology. Today its PUE is 1.5 with a forecast drop over the months to come as the project develops. This will significantly cut the amount of power required to run servers and in turn their operating costs.

| Corporate social responsibility | PUE | Swiss power | Save CAPEX and OPEX |

Corporate Social Responsibility

Many companies both large and small are actively seeking out ways to reduce their carbon footprint. Most of these set out their objectives in terms of Corporate Social Responsibility programmes. These will cover many aspects of business life including human relations, local community support and the conservation of energy in all its forms.

The data centre industry has already been identified as one of the most significant users of power. And one, if history is left to repeat itself that could demand an ever increasing share of this scarce resource, as the power per server spirals upwards. A situation that governments have recognised and are taking steps to curtail through such initiatives as the Carbon Reduction Commitment. Deltalis not only has its own CSR programme but also wishes to help its clients out-source part of theirs, pledging its help to clients by reducing their data centre power usage and carbon emissions, enabling them to meet government initiatives.

PUE – new versus old data centres

Old legacy data centres had a PUE of 2.5+ compared to the newer generation where a PUE of 1.2 and below are achievable. The charts below show the components that make up these calculations.

Pie chart PUE 2.5

Pie chart PUE 1.2


In energy terms a drop in a data centre PUE, having a 1megawatt IT load, represents substantial savings as demonstrated below.
PUE 1.2 Energy saving SFR
 Over 5 years 10 years
 1.5 1,576,800 3,153.600
 2.0 4,204,800 8,409,600
 2.5 6,832,800 13,665,600

Assumption

Calculated at SFr 0.12 Switzerland, SFr 0.16 UK per Kwh.

Cooling in data centres can be the biggest cost. Deltalis is therefore, ideally placed to take advantage of the new thinking in green data centre design. Its bunker is situated at:

  • Altitude
  • Surrounded by rock
  • Located over a subterranean lake where water temperature stay at a constant 12 degrees centigrade.
They create the opportunity to use free cooling methods, substantially reducing traditional cooling costs. They are backed up by conventional systems used as and when local conditions demand. After the IT load, the uninterruptible power supply - UPS is the next biggest power consumer. So the Deltalis centre uses a modular small battery system that is highly scalable. This enables the power requirements of the UPS to be carefully balanced with the growth of the centre.

Swiss power

Lowering PUE is vitally important as it reduces the use of power. So too is the source and cost per unit of the electricity for those interested in Corporate Responsibility Programmes. The canton of Uri, where Deltalis is sited, has electricity certificated as being carbon neutral thus eliminating tons of CO2 that would have been released into the atmosphere by most other similar sized data centres using power derived from fossil fuels. Better still, Swiss electricity charges are amongst the lowest in Europe cutting costs even further. The table below compares Swiss and UK power cost for a 1Mw IT load. It shows substantial saving at all PUE levels.

Saving using Swiss energy compared to the UK

PUE Energy saving SFR
  5 years 10 years
 1.2 2,102,400 4,204.800
 1.5 2,628,000 5,256,000
 2.0 3.504,000 7,008,000
 2.5 4,380,000 8,760.000

Assumption

Calculated at SFr 0.12 Switzerland, SFr 0.16 UK per Kwh.

Save CAPEX and OPEX now!

The quickest way for both small and large businesses to cut capital expenditure – CAPEX, is to outsource their data centre requirements. This then gives the additional advantage of known operating cost. Selecting a green data centre then adds the extra benefits of a low PUE which in turn cuts operating costs – OPEX. These benefits can simply be achievable by moving out of old legacy sites into Deltalis' new centre that is also scalable to your future needs.

Deltalis' unique data centre model offers its clients the opportunity to outsource a part of their Corporate Social Responsibility programme. Can we help you? If so please call or phone using the Contact information appropriate to your country.

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