[LINK] It's big, expanding and has a carbon footprint to match
Bernard Robertson-Dunn
brd at iimetro.com.au
Sat Jan 24 13:36:23 AEDT 2009
It's big, expanding and has a carbon footprint to match
Fairfax
GERARD WRIGHT
http://busselton.yourguide.com.au/news/national/national/general/its-big-expanding-and-has-a-carbon-footprint-to-match/1415341.aspx?storypage=0
23/01/2009 11:00:01 PM
A riddle. It's invisible but ubiquitous, and growing exponentially. Even
as it provides the capacity to reduce greenhouse gas emissions, its own
carbon footprint is ever larger. It is the fuel of clouds and the stuff
that races through fibre optic cables at the speed of light.
It is, of course, the internet, or more specifically, Information and
Communication Technology (ICT). At institutions as diverse as Melbourne
University, and its counterparts in the University of California (UC)
system in San Diego and Irvine, it frames the next generation of virtual
meetings, with instantaneous transmission of image and sound, from near
or far.
Larry Smarr is 54, and has lived through what amounts to multiple
generations of the life of the worldwide web, from conception in the
mid-1980s, when he fostered the network of connected computers known as
the National Science Foundation Net, to the ultra high-speed present.
As Smarr explained it at the West Coast Leadership Dialogue conference
here in Palo Alto, California, the future of the internet can be viewed
in two dimensions. The first is to be faster, using fibre-optic lines to
transfer large volumes of information almost instantaneously - no longer
just as pictures or text on a screen, but ultra high-definition, skin
tone-perfect live images, at 10,000 megabytes per second. The second is
to be both clean and be cleaner, reversing its current position, as a
significant and growing contributor to the carbon dioxide production
that the vast majority of scientists believe is the principal cause of
global climate change.
In the United States, the power consumed by computer data centres
exceeded the demand of the nation's TV sets three years ago. In
Australia, 200 million tonnes of its annual emission of 576 million
tonnes of carbon dioxide is caused by electricity, gas and water, with
information and communication technology accounting for 20 per cent of
those emissions. Globally, this technology produces roughly the same
volume of emissions as the aviation industry.
But that is the very least of it. Consider that the amount of raw data
in the world - balance sheets, recipes, form guides, the novels that
Google is gradually digitising - doubles every four years. Consider,
further, that only 2 per cent of that data is digital, an amount that
doubles every 16 months. This is the staggering volume of stuff that
another speaker at the Stanford University conference, a leading
software and hardware executive, explained, must be "processed, stored,
moved, visualised and shared".
The power demand works in two ways, with every watt of electricity used
in processing requiring a compensatory half watt in cooling, the result,
Smarr explained, of silicon chips that have become smaller, faster and
infinitely more complex, but also hotter.
This equation is sending the biggest companies if not off the grid,
certainly further afield. Consider Google, with its headquarters a short
drive south of here, on Silicon Valley's El Camino Real.
The search engine monolith owns hundreds of thousands of servers, and is
building a massive new data processing centre in suburban Portland to
house them. There it will draw on the 85-megawatt line that once
serviced a nearby aluminium smelter (now decommissioned) to power the
servers, and the waters from the dammed Columbia River, to cool them.
That line will barely cover Google's needs. An article in Harper's
magazine suggested that within three years, the Portland data centre
would need 103 megawatts of electricity, enough to power 82,000 homes.
Another data centre, in Canada, is being built next to a
hydro-electricity plant. Smarr said the CSIRO is looking to do the same
thing in Australia. It is co-owner with Australian tertiary institutions
of a fibre-optic network that can move information at the rate of 1
gigabit per second, or 250 times faster than the standard Sydney
broadband connection.
"There's not a hydro site in the world that hasn't been visited by
Google, Microsoft or Yahoo, to see if they can set up a data centre
there," Smarr said. The data centres are the physical manifestation of
the internet and ICT. They are also the places where the carbon
footprint of the web will grow or shrink, if, instead of electricity,
they can be run off alternate sources of energy such as solar, hydro or
biofuel. The sense of urgency at the conference about addressing the
internet's carbon footprint and its associated data storage, was real
but had less to do with altruism about the planet's future and much more
to do with the financial bottom line.
--
Regards
brd
Bernard Robertson-Dunn
Canberra Australia
brd at iimetro.com.au
More information about the Link
mailing list