Samstag Nov 03, 2007

Unterschriftensammlung im Google-Zeitalter

13949712720901ForOSX - die einfachste Möglichkeit, das Mitmachweb zum Unterschriftensammeln zu benutzen. In diesem Fall für die Petition, Java 6 in Max OS X "Leopard" zu unterstützen.

88 Hits bis jetzt...

Samstag Okt 27, 2007

Grüner Surfen - Update

Wieviel Ressourcenverbrauch verursacht denn nun das Surfen im Internet? Und wie kann dieser Verbrauch erstens transparent gemacht und zweitens reduziert werden? Das war das Thema der Fachtagung „Grüner Surfen“ im Bundesumweltministerium in Berlin.

Einen umfassenden Bereicht gibt es bei heise Technology Review.
Oder Interviews zum Anhören beim Deutschlandfunk.
Meine Präsentation kann hier als PDF heruntergeladen werden.

Update 08.11.2007: Die EU-Studie "Energy Efficient Servers in Europe - Part I: Energy Consumption and Saving Potentials" kann hier heruntergeladen werden.

Montag Okt 15, 2007

Meine Präsentation von der Sustainable IT Konferenz, Berlin - Update

Am 17. Oktober halte ich anläßlich der "Sustainable IT Konferenz" in der Kalkscheune Berlin eine Präsentation zum Thema "Zur CO2 Bilanz des Internet". Es handelt sich um eine verkürzte und aktualisierte Fassung der EBAY Entwicklerkonferenz Präsentation.

Präsentation zum Download: ODF (10MByte), PDF (5MByte)


Update:
  • "Spiegel Online" berichtet über die Konferenz: Wieviel CO2 Avatare ausatmen
  • Mitschnitt der Podiumsdiskussion "Nachhaltigkeitsdefizite im Web 2.0" mit Markus Beckedahl, netzpolitik.org; Jürgen Neumann, berlin.freifunk.net; und mir
  • Mittwoch Aug 15, 2007

    Als "Green IT"-Gastblogger bei Innovativ-In

    Durch die Sun EcoTour auf uns aufmerksam geworden, hat Elita Wiegand mich eingeladen, eine Reihe von Gastblogs zum Thema "Green IT" auf ihrer Innovativ-In Plattform zu posten. Hier die Links zu meinen fünf Postings:

     

    Montag Jul 30, 2007

    Eco-friendly Webhosting

    Since a dedicated server easily draws 5000 KWh electrical energy for power and cooling, which is (at least for the german energy mix) equivalent to four tons of carbon dioxide emissions, everybody should have a second thought on how much CO2 his or her web presence produces.

    Just like Car Pooling, shared webhosting can save a lot of energy. But if we share a server with somebody else, how can we find out how many nighbours we have to calculate our carbon footprint? The answer: http://www.myipneighbors.com/

    Let's see:

    • www.systemhelden.com seems to live on a decicated server, since it is sharing its IP address with www.systemhelden.de only. But: systemhelden.com is running on a Solaris Container, so we are not using a physical server here.
    • One Shared Domain at Strato (that according to Strato only consumes just 1KWh per year) shares the IP address with 700-800 other domains. Combine that with many IP adresses configured in one server, and you get many thousand domains served from one server alone.
    • Our Sun EcoTour Blog shares the server with 17 other domains. Not bad. We just have to make sure to buy enough CO2 neutral energy to feed the Sun EcoRider and the web page.

    Freitag Mai 04, 2007

    Your CO2 footprint when using the internet

    How much CO2 does a Google Search produce? Servers need electrical power. According to recent studies, all servers in the US accounted for more than 1.2% of the nationwide annual electrical power consumption, more than all TV sets combined. And, according to Netcraft, the number of internet hosts has doubled since then.


    The majority of electrical power is created by burning fossil fuels like coal, gas or oil, producing carbon dioxide CO2 ad global warming. So how much CO2 does one Google search produce? One EBAY auction or a SecondLife avatar? Or one blog on blogs.sun.com?


    For a keynote at the german EBAY developer's conference I calculated the following numbers and compared them to the CO2 emission of a Toyota Prius hybrid car and a human being:


    Web service

    CO2 emission

    Same emission as

    One Google search

    6.8 grams

    56 meters with the Prius or running 170 meters

    One EBAY auction

    55 grams

    420 meters with the Prius or running 1275 meters

    A SecondLife avatar, 24hrs „alive“ for one year

    332 kilograms

    2734 kilometers with the Prius or (as a human) just living for one year

    One blog post on blogs.sun.com

    850 grams

    7.6 kilometers with the Prius or running half a marathon



    My calculations and the sources for the number of servers etc. can be found in my presentation (in german language, but the numbers should speak for themselves). Download ODF here or PDF here. Or view online the Flash presentation (created with StarOffice Flas Export) below:


    As an example, this is how I calculated the surpisingly high blog post on blogs.sun.com number:


    We are hosting 66183 blogs in 3 years, running on two T2000 (the best servers you can get when it comes to power efficiency).


    A pair of Sun Fire T2000 servers draws 2\*320Watts. Double that number for cooling and infrastructure, so you need 33628KWh in three years. That's 0.5KWh for every blog! One KWh electral power created in a coal power plant creates 1700 grams of CO2 - so the global warming effect of this blog is comparable to a runner running 21 kilometers (or sitting in front of his computer for one whole day).



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