Category Archives: ICT4Green 1.0

Green Cloud presentation for the International Green IT Awareness Week 2012

This year I’m participating again as a Speaker in support of the International Green IT Awareness Week 2012 (IGITAW), in cooperation with “Proserpina Business Service and “Acquisti&Sostenibilità”.

International Green IT Awareness Week 2012

This annual conference is being held from 1st-7th June 2012. Foundation for IT Sustainability, the Australian not for profit initiative organiser, will be hosting a major virtual (online) conference during the week according to this calendar. IGITAW will engage a global network of green IT professionals, experts and organizations to present a series of engaging, pragmatic and thought-provoking presentations. The aim of the presentations will be to equip attendees with a range of skills and the knowledge necessary to take action on green IT, however big or small.

Speakers will be presenting through live video conferencing and webcasts; and will be addressing critical issues including the cultural change around green IT, showcasing case studies, discussing research, presenting on practical implementation and tips for implementing best practices for both home and business technology users.

The week of Free education and action was developed to encourage individuals and organizations to demand more from themselves and their partners, holding each other to account for our impact on the environment. The initiative also aims to encourage those individuals and organizations to bring together their CIO, IT Directors along with their business managers, CFO and COE’s to start the discussion around what their organization can do to green their IT infrastructure. You can freely register on IGITAW and browse other resources on Foundation for IT Sustainability

My presentation “Green Cloud: Can the cloud revolution help ICT sustainability, too?” went live on the IGITAW event website at 9:00am CEST on Wednesday 6th June 2012 (i.e. Rome & Central EU summer time) now its also available on

Green Cloud

My LIVE Q&A Chat Session is scheduled for Wednesday June 6th 2012 – 3:00pm-3:30pm CEST.

A pdf with the 40 slides and on-demand recording playback is available at

The Key Discussion Points of my “Green Cloud” speech are:

  • The cloud as a major revolution in the procurement of ICT services that can help sustainability, but not all the cloud providers are using clean energy sources as Greenpeace pointed out.
  • How some cloud computing best practices are addressing the energy efficiency and the other ICT sustainability issues?
  • Which ICT services from the cloud can provide more sustainable alternatives to companies and consumers?
  • Privacy, globalization, cyber risks, labour consolidation, and other hidden aspects of the cloud versus social responsibility.
  • A glimpse to the future driven by Internet of Things demand for massive cloud computing power.

My Presentation Synopsis is: “Cloud computing is a radical innovation not only for the ICT sector, but also for the organizations, business, social networks on a global scale. It can provide a terrific contribution to speed up the adoption of energy efficient data centers, matched with low power end-user devices. It is also enabling access to advanced computing resources to SME or less developed countries, changing the supply chain and e-waste collection of central ICT resources, providing new resources for scientific research in the environmental field. But at the same time, it creates new potential issues due to the fast growing power needed for cloud data centers, some providers are leveraging energy efficiency and renewable electric sources, while others are using electricity from cheap carbon or nuclear power plants. There are other aspects related to the shift in the power of a centralized, capital intensive model in delivering of services in a global scenario where laws, including those related to the privacy, are different according to the countries and ICT employment is moved from building and operating infrastructure to developing apps or creating new cloud enabled start-up. This section try to address some of the good, bad, and ugly of the cloud computing versus the vision of a sustainable model, that involves the ICT industry and the indirect contribution of ICT to a more sustainable world”

In my blog you can find these related previous posts (but much more updated content is in my speech):

The recording of my presentation made during the first edition of the Green IT Awareness Week 2010 “From ICT supply chain sustainability to ICT tools that can help to measure, certify, lower the impact of the supply chain for other products.” Is still available online.

I’ll appreciate your feedback!



More on Cloud Computing and Green ICT

In my previous post Cloud Computing and Green IT I’ve already referenced some interesting examples about the role of booming cloud services in getting an higher percentage of direct (total electricity use by data centers in 2010 of about 1.3% of all electricity use for the world, and 2% of all electricity use for the US according to this report by Analytics Press, author: Jonathan Koomey : “Growth in Data center electricity use 2005 to 2010”) and indirect (mobile devices, social networking) impact to GHG ICT emissions but also the opportunities of reducing both the cost and the environmental impact of internal, on premise, ICT by migrating services to the cloud. Since then I’ve added some comments to provide new interesting links, but everything is moving very quickly in the sky, since the cloud is the enabling technology for a radical change, driven by the power of social networking, globalization of services, the replacement of PC by mobile devices, the emerging role of the Internet of Things.

For example on Dec, 15th the: GreenPeace campaign for pushing Facebook to use clean energy has achieved a major milestone: Greenpeace and Facebook have announced that they will collaborate on the promotion of renewable energy, encourage major utilities to develop renewable energy generation, and develop programs that will enable Facebook users to save energy and engage their communities in clean energy decisions.

The campaign involved 700,000 online activists, which called on Facebook (setting a world record for the most comments on a single Facebook post in one day: 80,000) to power its data centers with clean energy instead of coal, leveraging social network to push changes. “This move sets an example for the industry to follow,” said Tzeporah Berman, Co-director of Greenpeace’s International Climate and Energy Program. “This shift to clean, safe energy choices will help fight global warming and ensure a stronger economy and healthier communities.”

Previously GreenPeace got Google to provide more with numbers on their annual energy use and their carbon footprint in the new section called “The Big Picture” of their Google Green site. Both Google and Facebook made also public statement about their choice to build new Data Centers for Cloud in locations where they can leverage the availability of renewable energy source and get almost free cooling:

· Google newest facility in Hamina, Finland, uses a unique seawater cooling system that requires very little electricity

· Facebook is to build its first data center outside the United States in the northern Swedish town of Lulea. It will be the northernmost of its size on Earth and will serve more than 800 million users. Lulea, because its cold climate would save energy for cooling, and it could use environmentally friendly (and low cost) hydro-power connected with a reliable grid.

IT will be interesting to see now how all the other companies involved in the GreenPeace campaign “Facebook: Unfriend Coal” based on Facebook, Twitter and YouTube will react to the pressure from this NGO. Meanwhile GreenPeace keeps on updating the Guide to Greener Electronics, which has in the 6 years of its existence, now 17th edition, a scorecard for ranking 15 leading consumer electronics companies (mobile phone, TV and PC manufacturers) on policies and practices to reduce their impact on the climate, produce greener products, and make their operations more sustainable. It’s interesting to notice that HP is now “the top scoring company – strongest on sustainable operations and energy criteria but could improve on green products criteria”.

The greater opportunity for Cloud is not only to become more sustainable by itself, but in providing a more efficient and sustainable solution to customers. Jonathan Koomey is Consulting Professor at Stanford University and has researched and written extensively on electricity use by IT equipment. In a recent blog he gave four reasons why he thought cloud computing is (with few exceptions) significantly more energy efficient than using in-house data centres:

· It’s cheaper for large cloud computing providers to make efficiency improvements because they can spread the costs over a larger server base and can afford to be more focused on addressing energy use.

· With more users who are spread across different locations, computing loads are spread over the day, allowing for increased equipment utilisation. Cloud facilities for major vendors can be in the 30-40% utilization range, compared with 5-15% for in-house data centres.

· Cloud installations more often use virtualization and other techniques to separate the software from the physical servers, which allows for the greater optimisation of servers.

· Cloud computing sidesteps organizational issues, such as the problem of IT driving server purchases but facilities paying the electric bill. Cloud providers generally have one data centre budget and clear responsibilities assigned to one person.

Many other studies on this topic are being published: one of the most important is the study from CDP & Verdantix Cloud Computing – The IT Solution for the 21st Century help to understand that “large US companies that use cloud computing will be able to save $12.3bn in energy costs and 85.7 million metric tons of CO2 emissions annually by 2020. The energy savings are enough to power 5.7 million cars for one year. ”

There are also new studies sponsored by ICT companies to prove benefits of moving to cloud, for example:

· The Google study on Gmail is an example of how cloud-based services can be much more energy efficient (up to 80 times) than locally hosted services, helping businesses cut their electricity bills.

· WSP Environment & Energy, that has already done the study for Microsoft and Accenture, published the March 2011 research study on saving provided by the cloud based CRM supporting the statement that A transaction is on average 95% more carbon efficient than when processed in an equivalent on-premises deployment (64% more carbon efficient versus a private cloud deployment). The following is an example of daily saving claimed by Salesforce on (a calculator “Measure your impact” is also provided to help customers in evaluating how they can reduce their carbon emissions by moving their business to the cloud).

Please, let me know if you find this topic valuable by providing me some feedback, I should have much more information to share, and a presentation on this topic (sorry it’s in Italian) that I did at the IT Director Forum 2011 (Executive Circle) by Richmond Italia that is available to members of “Acquisti&Sostenibilità” on the portal in the studies section
Donato Toppeta

Join “Friends of Acquisti&Sostenibilità” on LinkedIn at
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Low Power Computers/Devices are closer!

Intel has demonstrated an experimental (not commercial) low-powered microprocessor, based on Near Threshold Voltage (NTV) Processor technology (circuits operate at 400-500mV), that can be powered by a small solar cell (same size as a postage stamp). Code named Claremont, it consumes < 10mW when workload is light, and combined with the Hybrid Memory Cube was capable of running a PC using the Linux OS (the design was based on the Pentium, but much more energy efficient).

The Hybrid Memory Cube, is a concept DRAM developed by Micron in collaboration with Intel, delivering a 7-fold improvement in energy-efficiency over today’s DDR3. Hybrid Memory Cube uses a stacked memory chip configuration, forming a compact “cube,” and uses a new, highly efficient memory interface which sets the bar for energy consumed per bit transferred. Those new technologies raise the prospect of greener computing, allowing longer battery life for mobile devices and powerful, energy-efficient, extreme power saving processors for other scenarios such as extreme scale computing. One goal of the NTV research is in fact to enable architectures where power consumption is so low that entire devices could be powered not only by solar energy, but also by vibrations, thermoelectricity or ambient surrounding wireless signals.
I remember that this scenario was already proposed by Gunter Pauli in his “Blue Economy” book and in many lectures/posts, but now it’s more clear that our future mobile and embedded (IoT) devices will be less dependent from batteries (reducing also pollution due to e-waste) and that the future datacenters needed for the cloud will not keep on wasting so much power using “heat-sink free” CPU.
Intel has in fact a company-wide goal of delivering 300-fold improvement in energy efficiency in high-performance computing over the next 10 years. Meanwhile Intel has announced in march 2011 that it will deliver in 2012 four new processors for the category that span 45 watt high performance to sub-10 watt, all with advanced server features such as 64-bit, Virtualization Technology and Error-Correcting Code. More recently Intel has stated that they are working on a new class of platform power management for Ultrabooks™ that will aid in the delivery of always-on-always-connected computing. Both Google and Microsoft are working with Intel and will leverage Ultrabooks in their Android and Windows 8 platforms.

Cloud Computing and Green IT

Sustainability of cloud computing is becoming an “hot issue” because a global shift to booming social networking, mobile computing replacing PCs, cloud based services (PAAS, IAS, SAAS) replacing on premises resources. The following ones are some examples of what’s on about this topic, involving companies providing cloud services and infrastructures and NGOs that are launching viral marketing campaigns. I’ve also discussed shortly about it during the A&S-IACCM webinar.

Greenpeace in February 2011 issued a challenge to Facebook, calling on it “to embrace a clean energy future by committing by Earth Day (April 22nd) to make a plan that would end its use of coal to provide electricity to the company’s rapidly expanding computer network”. It follows the: “Facebook: Unfriend Coal” campaign, that Greenpeace launched to:
  • Increase Facebook’s use of clean energy;
  • Develop a plan to mitigate Facebook’s climate footprint and to become coal free by 2021;
  • Educate Facebook users about how the company powers its services.
  • Advocate for clean energy at a local, national and international level.

and published the document: “Make IT Green: Cloud computing and its contribution to climate change

As cloud computing becomes more common and demands on the internet grow, major companies hosting online services are using more and more energy for their data centers. This report looks at the contribution of cloud computing to climate change and what can be done by the ICT sector to help bring about, and benefit from, strong renewable energy policies and economy-wide emissions reductions.

On April 21, 2011 GreenPeace has released another report “How Dirty is Your Data” about the energy demands of data centers, and the dirty sources that that energy comes from in some of them.

From the Introduction : “Data centres to house the explosion of virtual information currently consume 1.5-2% of all global electricity; this is growing at a rate of  12% a year.”

Open Compute Project

Open Compute Project

On the Facebook side it’s interesting to look at Open Compute Project, an industry-wide initiative, inspired by the model of open source software, to share specifications and best practices for creating “the most energy efficient and economical data centers”. A small team of Facebook engineers spent the past two years tackling a big challenge: how to scale our computing infrastructure in the most efficient and economical way possible. They started with a clean slate, take total control over every part of the system, from the software to the servers to the data center. This meant they could for example:

  •  Use an high efficency 480-volt electrical distribution system to reduce energy loss. Ethernet-powered LED lighting.
  • Remove anything in our servers that didn’t contribute to efficiency. Use vanity free servers, with no extra plastic and significantly fewer parts than traditional servers
  • Reuse hot aisle air in winter to both heat the offices and the outside air flowing into the data center. The mechanical system uses 100% airside economization with an evaporative cooling system.
  • Eliminate the need for a central uninterruptible power supply.

The claimed result is that the Prineville data center has achieved an initial power usage effectiveness (PUE) ratio of 1.07, compared with an average of 1.5 for the existing Facebook facilities; it uses 38% less energy to do the same work while costing 24% less. The specifications are available at

On the same topic, to get a more global vision I should suggest you to read these posts:

And these White Papers:

Originally posted on Feb 24th, 2011 Updated on May 5th, 2011

Gartner’s Top 10 Strategic Technologies: from Green IT to IT for Green

Last week I was collecting some ranking about Green IT from Analysts, and obviously I started from Gartner.

Comparing the last three years of Gartner’s suggested “strategic technology” that companies must take care  “as one with the potential for significant impact on the enterprise in the next three years. Factors that denote significant impact include a high potential for disruption to IT or the business, the need for a major dollar investment, or the risk of being late to adopt.” I noticed that not only Green IT was always included even if with different positions in the list, but also a meaningful change from traditional Green IT, combined with some related applications or enabling technologies such as virtualization (top ranking in forecast for 2009), data center optimization, cloud computing (top ranking for 2010, 2nd for 2009), Unified Communication

Gartner Identifies the Top 10 Strategic Technologies for 2008

“1st : Green IT. The focus of Green IT that came to the forefront in 2007 will accelerate and expand in 2008. Consider potential regulations and have alternative plans for data center and capacity growth. Regulations are multiplying and have the potential to seriously constrain companies in building data centers, as the impact on power grids, carbon emissions from increased use and other environmental impacts are under scrutiny. Some companies are emphasizing their social responsibility behavior, which might result in vendor preferences and policies that affect IT decisions. Scheduling decisions for workloads on servers will begin to consider power efficiency as a key placement attribute.”

Gartner Identifies the Top 10 Strategic Technologies for 2009

“Green IT. Shifting to more efficient products and approaches can allow for more equipment to fit within an energy footprint, or to fit into a previously filled center. Regulations are multiplying and have the potential to seriously constrain companies in building data centers, as the effect of power grids, carbon emissions from increased use and other environmental impacts are under scrutiny. Organizations should consider regulations and have alternative plans for data center and capacity growth.”

Gartner Identifies the Top 10 Strategic Technologies for 2010

“IT for Green. IT can enable many green initiatives. The use of IT, particularly among the white collar staff, can greatly enhance an enterprise’s green credentials. Common green initiatives include the use of e-documents, reducing travel and teleworking. IT can also provide the analytic tools that others in the enterprise may use to reduce energy consumption in the transportation of goods or

Green IT & IT for Green are clearly an hot topic for Gartner . You can find more also here

where Andrea di Maio states: “Green IT” is an important theme that many industries must deal with. Government organizations will be more exposed because they play key roles in regulating and supervising environmental impact and because green IT will become more politically sensitive going forward.”

Best Regards,


Sustainability Virtual Summits: Smart ICT

Virtual tradeshows and expos are a very interesting example of how Unified communication and virtual reality can provide, not only an additional opportunity for attending a fair, but also a greener alternative to conventional events. This approach is quickly growing and becoming more effective, with some obvious limitations due to our habits to shaking hands and face to face meeting or quick recognition of peers in a crowds, because the creativity of virtual fair designers and ICT technology evolution are providing new solutiond to improve the on-line experience with many ways to interact with peers and exhibitors. Obviously there are many clear advantages in an on-line virtual exhibition: it’s usually a long lasting experience, easier to plan and schedule according to each visitor’s constraints, it avoids queues, bags full of paper, long travel and delays, makes easier to exchange electronic business cards and documentation, plan on line private or group meetings and so on. Obviously a virtual event save energy, travel, space and money. Probably the largest one will be the “On line Shanghai EXPO 2010:

Waiting for International Green IT Awareness Week (1-7 June 2010 look here for my post) a good example closely related to the topic of this blog, running just now is the free “Sustainability Virtual Summits: Smart ICT” with a prestigious list of ICT experts, supported by the United Nations, BSR and Forrester Research.

It’s a virtual conference and tradeshow “to present the case for a future-oriented ICT industry, to respond quickly to the challenge of sustainability. It summarize thes cutting-edge information and best practices that you need to support you in your journey toward building a more sustainable and more efficient enterprise.”

The main topics are

  • Dematerialization – the substitution of high carbon products and activities with low carbon alternatives
  • Collaboration and unified communication, with an emphasis on telepresence
  • Next generation data centers and communication
  • Smart Grid

The business impact of sustainability on commercial brands

The Smart ICT summit allows from my desktop to watch presentations, interact in real time with experts, network with peers and visit virtual exhibits in order to:

  • “Explores how corporations can reduce their environmental impact and become more socially responsible, while maintaining or even improving financial bottom lines.
  • Discusses initiatives the ICT sector has undertaken to reduce its own environmental impact.
  • Explains how the ICT sector can create an even bigger impact by introducing innovative services that other industries may benefit from.”

For example yesterday the invitation for the European scheduled day included:

A Plenary Keynote speaker presentations in the Auditorium are being broadcast now, and interesting discussions are taking place with attendees.  We are listening to a telepresence-enabled roundtable on “The Role of Business in Ensuring a Sustainable Future” right now.  Next up is “Transforming Communications for a Sustainable Planet”.  Afternoon Track Session presentations will begin at 1:15p UK time in the Meeting Rooms.

Cheers, Donato

Green IT Awareness Week has been launched!

The Green IT Awareness Week is a terrific “collaborative global initiative” consisting of in-person and online virtual seminars aimed at increasing the Green ICT awareness. It will be an yearly event that will run from 1-7 June, a week of activities, training and presentations, starting from this year. I’m proud to be involved by Mark Winter, the creative founder of ComputersOff.ORG and Bianca Wirth, now chief executive officer, that I know as one of the best expert on Green IT, since we were both working for Microsoft and cooperating all around the world in spreading the belief that ICT can provide a great help in both addressing its own sustainability and above all reduce the environmental impact of many other sectors.

Green IT Awareness Week is a not-for-profit organization that leveraging its Green IT awareness week website will involve expert researchers, green IT specialists, vendors and manufacturers, as well as organizations which have already successfully implemented their own green IT initiatives.

As Bianca Wirth, said to

“Many businesses have aspired to sustainable IT over the last five years, but many don’t have enough information to enable them to build a strong business case for implementation and cost savings.”

She also added that:

“We also aim to empower employees, as well as executives, with the knowledge and innovative ideas to reduce the environmental footprint of their organization and achieve positive return on their investment.”

Some of the topics covered during the week will include:

  • What is Green IT?  What are we doing about Green IT?
  • What is the latest in Green IT research?
  • Why set up Green IT initiatives?
  • What do we have to gain from implementing Green IT measures?
  • What are the Green IT Quick Wins? How can ICT make our company and our staff more sustainable long term?
  • How do we become Green IT Champions?
  • How do organizations undertake cultural change for green IT?
  • What are the top examples of organizations achieving an environmentally sustainable IT?
  • What are the risks if we wait too long to take actions?

The Green IT week will address a range of solutions from Data Centre optimization and consolidation through Cloud computing in Green Data Centers to Lifecycle Management and Green Procurement; addressing for example energy, paper and water saving, Technology replacements for travel and current standards, legislation and associations.

On the Green IT awareness week website you can already find  the link to “ eBook“, written by  Irene & Adrian Sobotta and John Gøtze, with the help of a group of Green IT experts spread across the globe: Denmark, United Kingdom, Germany, USA, Netherlands, Japan and Australia. It’s the result of an exciting, internationally collaborative, and nonprofit (Creative Commons licensed) project. It started for COP15 and it’s already at second edition with 194 pages and it keeps evolving! The book seeks to cover the general potential of Green IT, as well as the potential of a number of new specific technologies, such as Smart Grid and Cloud Computing.

As the authors declare (you can read more about their effort here):

“Our common underlying assumption is that there is something wrong with the world today! We perceive Climate Change and Global Warming as the effects of unsustainable consumption patterns in an industrialised world. In an effort to contribute to solving the problem, we look into the great potential of Information Technology (IT). The overall goal is to communicate to a large audience how IT can be leveraged to transform today’s society into one characterised by low emissions of greenhouse gases.”

The image below illustrates which were the preliminary ideas for topics to be included in the book. I you want a “summary word cloud” look here!

Are you serious about Green ICT and do you want to be involved too? You are welcome! Look at Top Five Things You Can Do Here… for additional information. In any case help us to spread the word!

Cheers,   Donato

Sustainability means also web content accessibility

I had today the opportunity to think (as a friend reminded me) that sustainability means also taking into account that technology should not create additional barriers and digital divide due to less powerful PCs and older browsers, that can be used by people with lower income or that try to use longer a PC before replacing it, or for impaired people, which might have many different causes: recovering from surgery, having trouble focusing, getting older, etc.

This is the reason W3C provides guidelines about accessibility evaluation for web sites in Web Content Accessibility Guidelines, part of a series of accessibility guidelines published by the Web Accessibility Initiative. The series also includes User Agent Accessibility Guidelines ([WAI-USERAGENT]) and Authoring Tool Accessibility Guidelines ([WAI-AUTOOLS]). The WCAG is separated into 3 levels of compliance, A, AA and AAA. Each level requires a stricter set of conformance guidelines, such as different versions of HTML (Transitional vs Strict) and other techniques that need to be incorporated into your code before accomplishing validation.This is the beginning of the abstract from the spec:

These guidelines explain how to make Web content accessible to people with disabilities. The guidelines are intended for all Web content developers (page authors and site designers) and for developers of authoring tools. The primary goal of these guidelines is to promote accessibility. However, following them will also make Web content more available to all users, whatever user agent they are using (e.g., desktop browser, voice browser, mobile phone, automobile-based personal computer, etc.) or constraints they may be operating under (e.g., noisy surroundings, under- or over-illuminated rooms, in a hands-free environment, etc.). Following these guidelines will also help people find information on the Web more quickly. These guidelines do not discourage content developers from using images, video, etc., but rather explain how to make multimedia content more accessible to a wide audience.

In the introduction we can find a useful remind of what kind of accessibility issues should be taken into account, very often we forget them looking for a new smart and exiting interface that looks us more fashionable and able to capture more clicks:

For those unfamiliar with accessibility issues pertaining to Web page design, consider that many users may be operating in contexts very different from your own:

•         They may not be able to see, hear, move, or may not be able to process some types of information easily or at all.

•         They may have difficulty reading or comprehending text.

•         They may not have or be able to use a keyboard or mouse.

•         They may have a text-only screen, a small screen, or a slow Internet connection.

•         They may not speak or understand fluently the language in which the document is written.

•         They may be in a situation where their eyes, ears, or hands are busy or interfered with (e.g., driving to work, working in a loud environment, etc.).

•         They may have an early version of a browser, a different browser entirely, a voice browser, or a different operating system.

As explained in the doc itself it is meant to be stable and therefore does not provide specific information about browser support for different technologies as that information changes rapidly. Instead, the Web Accessibility Initiative (WAI) Web site provides such information. The W3C Mobile Access Activity home page and the W3C Internationalization Activity home page have more information about mobile devices access and internationalization.

On WAI you can find for example:

The following is the accessibility icon that I took from this page where you can find most of Microsoft resources brought to you by the people who design assistive technology and the people who rely on it. For example I appreciated the The Inclusive Innovation Showroom, by Daniel Hubbell.

Last, but not least, I liked this logo too, from Knowbility, a non for profit  organization founded in 1999, whose mission is to ensure barrier-free I.T. – supporting the independence of people with disabilities by promoting the use and improving the availability of accessible information technology

I must admit that I’m not an expert as a web developer, but I’ll try in the future to remember that everybody has the right to access any content published on any blog, including mine!

Sincerely, Donato

Data Center Sustainability

On DatacenterDynamics there are many interesting posts from The Datacenter Research Group

For example:

  • and PUE ratings: Shifts in efficiency and shifts in attitude

Datacenter Research Group

Obviously there are many other interesting ones, above all in this section related to energy efficency a core topic for sustainability:

Energy Stewardship

The Energy Stewardship Knowledge Bank is all about how to make your data center run more energy efficiently. Keywords: PUE, DCiE, DCP, EER Energy Efficiency Rating, sustainable, green, energy conservation

Cheers, Donato

Ecofont a small advice for saving ink when printing

Great changes are often made of small steps, for example you can use ecofont for your documents that really need to be printed. A free version is here: and a professional one is available too:

Obviously ecofont works better if you choose to avoid waste of paper by choosing print preview in order to avoid errors and limiting margin space and optimize other page settings for reducing the number of pages printed (on recycled paper!), for more details look at:

  • Energy and paper-saving presentation
  • Paper-saving settings for online and print documents
  • This is an example of  Spranq ecofont

    It’s clearer if you enlarge it Spranq ecofont