[iDC] Power and the Internet
Andreas Schiffler
aschiffler at ferzkopp.net
Thu Jun 1 15:37:13 EDT 2006
I'd like to make a quick ecologically motivated post to the list.
It is amazing how easy it is to forget and ignore a simple fact: the
Internet with all its "free" communication and information is a big
energy wasting, power sucking HOG of a construction. Once you've read
the numbers below, there can be no doubt why there is a digital divide
and Africans don't need a donation of our old PCs: only the affluent can
afford to "plug-in" and operate that kind of juice-sucking machinery in
the first place.
Take Google for a start: Google operates one of the largest
computer-clusters on the planet, to provide us with a sub-second search
result (and the ads that go with it). They run upwards of 250K servers,
collectively consuming a staggering 20 Megawatts of power for a nice
electricity bill: 175 Gigawatt-hours per year - almost a Million Dollars
a month. And that's just their server farm, never mind the offices and
equipment that connects it to the rest of the world. --
http://en.wikipedia.org/wiki/Google_platform
At the time when "Energy-Star" labels went onto most Dell PCs in 1999,
the experts were discussing the total power consumption of office
equipment and network infrastructure. An estimate of 74 TeraWatt-hours
(TWh) per year is estimated up. The Internet barely makes a blip in the
total (copiers and laser-printers are just way better "consumers" than
modems), with telecommunications equipment taking about 5-10% of this
total or about 7Twh/y ... note that this is in 1999 and for the US only.
-- http://www.lbl.gov/Science-Articles/Archive/net-energy-studies.html
A few year later in 2002-2003, the reports were refined and give a
number of scenarios with interesting sounding names like "Zaibatsu",
"Cybertopia" and "Net Insecurity" which solidify a new conservative
estimate to around 3.5% of TOTAL power consumption. --
http://www.rand.org/pubs/monograph_reports/MR1617/MR1617.sum.pdf
Today usage is further up (as usage grows), so we can assume a
conservative level of 4% of total power consumption, factor in the 4TW
of US usage in 2006 and get a nice amount of 1401 TWh/year (including
all the office equipment again). Thus our 5% Internet portion, is now at
a whopping 70 TWh/year - perfectly in line with the 10-fold grows in
hostnames from 1999 to today as reported by Netcraft. --
http://news.netcraft.com/archives/web_server_survey.html
Will the trend continue. Sure it will! With more always-on-devices and
entertainment platforms like the PS3 that would be considered a
supercomputer just 10 years ago, we will definitely continue to use more
power for our IT needs. Even though companies such as Apple like to put
a positive spin on it --
http://www.apple.com/environment/energyefficiency/ -- the fact is, that
current hardware (CPUs, video cards and even networking equipment) will
use more power. And new operating systems like Microsoft's Vista, which
will require a 3D accelerator card (the second larges power consumer in
a PC) - a software move that will push for more transistors running at
higher speeds on Millions of desks. Thermal design is really the primary
limiting factor in microchip design today and current processors burn up
as much as 100W of power when in use. --
http://www.tomshardware.com/2005/11/21/the_mother_of_all_cpu_charts_2005/page4.html
But hey, I forgot one more thing: The production costs for all the
equipment that runs the show! Its a bit like the hybrid-car-connundrum:
Forget hybrids, but give me a car that lasts 5 more years - that's
green. Because on a whole, the longer lasting car will probably save
more energy than driving one of the latest battery-powered gizmos would
- because a lot of energy is spend on making the car in the first place.
The same applies to the tech equipment: Five new computers over a period
of 10 years (28GJ) is about two-thirds of a car (47GJ) in terms of
energy consumption for production. --
http://www.newsfactor.com/perl/story/19992.html
So this leaves my environmental conscience - as tech worker, full-time
programmer, dare I say internet-addict - with quite a bad feeling about
the whole thing and one can only hope that technological advances will
turn the trend around in the near future. As an individual, I think one
can try to do more with less, keep the old stuff and live with simpler
cooler-running technology as long as possible. But in the end it leaves
me still a searching for practical answers ... Maybe after we get this
email, we can all turn off our monitors for 1 minute (and save some
power, maybe the planet). ;-)
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