Green ICT

Hopefully you will have read the recent edition of RGU’s “Green Times” – if not you can read it here.

It includes an article which shows the environmental impact of PC’s being left switched on and what you can do to help – by turning your PC off when it is not in use. What is less obvious to our staff and students is the impact of “behind the scenes” ICT. Way back in 2007, the Gartner Group estimated that globally information and communications technology contributes to some 2% of total carbon emissions.

That’s about the same as the aviation industry. A quarter of the ICT related emissions come from data centres running servers, which then require further energy to keep them cool. . .

We have many servers running in our server rooms on Campus, and the rooms themselves are nothing like as efficient as modern datacentre standards. We expend much more energy on cooling than we need to. Aberdeen University is in a similar situation, so are Aberdeen College and Banff and Buchan College (although they have recently upgraded their server room), and at the moment we all run our data centres independently from each other. Over the past 3 years we have been working hard to see how we could collaborate to reduce all our costs and carbon emissions.

This culminated in an agreement earlier this year to move into a shared datacentre by upgrading space in the University of Aberdeen. It’s currently under construction, and will be ready by the Spring of 2013. Initially, it will become the primary datacentre for Aberdeen University, Robert Gordon University and Aberdeen College, with Banff and Buchan using the facility at a later date.

The environmental impact of this will be substantial. We estimate that the total power consumption of all the servers from the 3 institutions is 220kWh. In our own separate, old, data centres at the moment we probably use the same amount of power again just to keep the servers cool (220 kWh is roughly 22 electric cookers, with everything switched on, running all the time – just picture it). CO2 emissions from all that will come to 2030 metric tonnes per annum.

By packing all these servers into one modern datacentre we will slash the energy required for cooling. We estimate that our total power consumption will drop from 441kWh to about 264kWh. As an added bonus, much of the electricity will be generated by Aberdeen University’s combined heat and power plant with lower associated carbon emissions. In total, we anticipate saving 1061 tonnes per annum.

And into the bargain, the institutions will save £2.6m collectively over the next 10 years.

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