Saving Energy in Online Activities

  • Servers at Expedient data center in Garfield Heights, near Cleveland, Ohio (Photo by Julie Grant)

One industry that’s not suffering in the economic downturn is information technology. The demand for IT keeps growing. But that worries some people. Our growing number of internet searches and data storage is using a lot of energy. Julie Grant reports on how some companies are making their IT more environmentally friendly – and saving money in the process:

Transcript

One industry that’s not suffering in the economic downturn is information technology. The demand for IT keeps growing. But that worries some people. Our growing number of internet searches and data storage is using a lot of energy. Julie Grant reports on how some companies are making their IT more environmentally friendly – and saving money in the process:

(sound of an internet search with a tea kettle)

By some estimates, two Google searches create the same amount of carbon dioxide as boiling water for a cup of tea.

Most people don’t think about the greenhouse gas emissions caused by their internet use. But there are about 200-million
searches globally each day – and each search kicks a lot of servers into gear. It adds up.

Albert Esser is an IT expert with Dell Computers. He says
in just a few years internet use could use 3% of the nation’s energy supply. That’s a lot of carbon pollution.

“From a global greenhouse perspective, that’s about the same as the airline industry will cost.”

But Esser says computers don’t need to use that much energy. Most computer systems are so
in-efficient today – that they’re wasting more than 90% of the energy they use.

(sound of a data center)

This is a data center. It’s filled with racks and racks of servers.

A hundred different companies rent space here. Each company has its own set of servers – to coordinate its email systems, word processing, online credit card transactions – all kinds of programs its employees and customers use.

But data centers can be real energy hogs. They need electricity to run all those servers. That creates a lot of heat, so they also need air conditioning. One data center can use as much electricity as a good-sized town.

(sound of electricity in the data center)

“You can hear the electricity, in here. The piles of batteries you see are attached to the uninterruptable power supply.”

Bryan Smith is marketing director for Expedient, which runs this and other data centers around the country. His customers want their computers to be fast, and that takes a lot of power.

But Smith says the data center does everything it can to cut down on energy usage.

“It’s obviously in our best interest to be energy efficient, because we’re the ones paying the power bill.”

So, they’ve set up the server racks to make them easier to cool. They’re also building a system to pull in cool air from the outside, instead of using so much air conditioning.

Some companies that use the data center are also starting to use software to create what are called virtual servers.

“This rack here is a virtualization rack, so you’ve for one rack here that has 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 computers in it. Right? So each one of these servers is equal to 16 physical servers.”

And so for each of those ‘virtual servers’ they can turn off
15 actual servers.

But, even with all that saved space and energy, Expedient’s data centers are growing faster than they ever anticipated.

This one built in Cleveland only two years ago is just about sold out of space – so Expedient is building another data center next door.

Albert Esser at Dell says the most environmentally friendly way to build data center is not to build one at all.

He says making better use of old centers, with virtual computers and other energy efficiency measures, produces a lot less pollution. And it saves money.

“I think the economic downturn, as harsh as it sounds, is the best thing which could ever happen to green IT. Because the economic pressures will make people think much harder to just build a new data center without changing the way they operate it.”

So IT is learning what a lot of companies are learning – that going green can mean saving energy – and that’s better for the bottom line.

For The Environment Report, I’m Julie Grant.

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