Author: Colleen Miller

  • IBM Robot Maps Data Center Temperature and Humidity

    Data center managers need to measure temperature and humidity in a data center, and now they can use small robot by IBM to perform that function. This 1:38 minute video shows the IBM robot and what it can do the data center. The data from the robot is used to develop an efficiency map, which shows temperature differences in the data center and can guide you in making your data center airflow more efficient.

    For additional video, check out our DCK video archive and the Data Center Videos channel on YouTube.

  • Video: DC2 Datapod System Heads to Europe

    Data center manufacturer Datapod recently started deploying its first export to Sweden, delivering its Data Center 2.0 (DC2) modular data center technology. Datapod product has also been used for PNG ports and a number of global mining companies. The 1:54 video shows Datapod’s pre-fabricated modular units. “The export to Sweden is recognition that Datapod has developed a truly global data center solution that is more economical and quicker to deploy when compared to traditional bricks and mortar. The flexible, scalable and sustainable approach we take to data center manufacturing provides numerous benefits for our customers, including reduced carbon emissions, and lower CAPEX and OPEX,” said Datapod Director Adam Smith.

    For additional video, check out our DCK video archive and the Data Center Videos channel on YouTube.

  • Savvis Opening More Data Centers Around Globe

    An example of the hot aisle in a Savvis data center in the London market. (Photo: Savvis)

    An example of the hot aisle in a Savvis data center in the London market. (Photo: Savvis Slough Campus, Luben Solev)

    To respond to its growing global customer demand, data center operator and cloud hosting provider Savvis, a CenturyLink company (CTL), said Tuesday it is opening two new data centers and expanding eight existing data centers. The additional data centers will be added in European and Asian markets where Savvis already has a presence.

    The Web Hosting Industry Review reported in Savvis Expands Data Center Footprint in Nine Global Markets that the expansion plan “brings Savvis’ total available data center space to more than 2.4 million square feet across more than 50 data centers located throughout North America, Europe and Asia.”

    The company has opened new data centers in Hong Kong and London, which Savvis announced last month, as well as expanded eight existing Savvis data centers.

    For more information, bookmark our company page on Savvis.

  • IMN’s Financing, Investing & Real Estate Development for Data Centers To Convene in NYC

    The IMN’s Financing, Investing & Real Estate Development for Data Centers conference will kick off on Thursday this week, with a opening panel discussing how issues in the macroeconomy are impacting data centers.

    The panel will be moderated by Tom Watts, Managing Member, Watts Capital, who will be joined by Philip Johnston, Territory Sales Manager, Extreme Networks; Eric Wells, Vice President, Data Center Services, Fidelty Investments; Rob Stevenson, Managing Director – Head of U.S. REIT Research, Macquarie; and James Breen, Senior Analyst, Internet Infrastructure Equity Research-Communications Services, William Blair.

    The other sessions will cover popular topics including:

    • Mergers, Private Equity & IPOs
    • The President/CEO Panel: Colo Players
    • Scale vs. Scalability vs. Rightsizing
    • Connectivity-Creating & Tapping into New Revenue Streams
    • Evaluating & Standardizing Data Center Standards & Performance Metrics
    • Should you Own the Underlying Data Center Real Estate?

    The event for data center owners, data center tenants, data center investors, and capital and service providers will held at the Conrad Hotel in New York City on May 30-31, 2013. For more information, visit the IMN website.

  • Flyover: Apple’s Massive Solar Array for the iDataCenter

    apple-maiden-aerial-solar-4

    Apple’s data center in Maiden, North Carolina is the location of the nation’s largest end-user-owned solar photovoltaic array, and the array produces onsite renewable energy to the iDataCenter. This 100-acre, 20-megawatt (MW) facility has an annual production capacity of 42 million kWh of clean, low-carbon, renewable energy. The 1:20-minute video has no sound, but the images provide a dazzling view of the acres of photovoltaics. The solar facility is part of Apple’s approach to environmental responsibility.

    For additional video, check out our DCK video archive and the Data Center Videos channel on YouTube.

  • Friday Funny: Green Lighting in the Data Center

    It’s Friday and we’re ready for some humor. So let’s get to our Data Center Knowledge caption contest, with a new cartoon drawn by Diane Alber, our favorite data center cartoonist!

    This week we present “Green Lighting.” Diane writes: “I just went to tour an amazing lighting center and they talked about they had a very large focus on green lighting by using LEDs and other light fixtures. So I thought Kip and Gary would take this “green lighting” thing to a new level.” Enter your caption suggestion below. Please visit Diane’s website Kip and Gary for more of her data center humor.

    Green lighting.

    Click to enlarge.

    The caption contest works like this: We provide the cartoon and you, our readers, submit the captions. We then choose finalists and the readers vote for their favorite funniest suggestion.

    The winner will receive his or her caption in a signed print by Diane. Also, we must announce the winner of the previous cartoon, Joe, who submitted, “LEED Platinum here we come!” for May Flowers.

    For the previous cartoons on DCK, see our Humor Channel.

  • HostingCon 2013 Gears Up for Austin

    The Austin Convention Center which is the conference site of HostingCon 2013.

    The Austin Convention Center which is the conference site of HostingCon 2013.

    HostingCon, which will be held June 17 – 19, is an industry event designed to serve the professional interests of the web hosting and cloud services community. Participants will discuss the challenges of the present and think broadly about the future of the cloud computing and web hosting industry.

    This year’s event will be located in one of North America’s top technology hubs, Austin, Texas, at the Austin Convention Center.

    Thought leaders, subject matter experts and professionals convene at HostingCon for three days, with the intention of networking, making connections and furthering their business interests. The exhibit hall space will host more than 150 vendors.

    According to organizers, the mission of HostingCon is to provide essential industry knowledge and intelligence in an unbiased platform. It is the only North American event that is seeks to comprehensively meet the needs of the web hosting and cloud community.

    Attendees who purchase the full conference pass get access to HostingCon Connect, which allows attendees to link to the people they most desire to connect with before and during the conference. Send messages to up to 30 people and search the HostingCon attendee database by name, company and title to find the right decision makers to connect with.

    More information and registration is available on HostingCon’s website. Early bird registration rate ends today, May 16, at midnight. For DCK readers, use this coupon code when registering: DCK2013 to receive a discount on the registration fee.

  • 6 Key Trends in the Data Center Following AFCOM Data Center World

    Mark Harris is the vice president of marketing and data center strategy at Nlyte Software with more than 30 years experience in product and channel marketing, sales, and corporate strategy. Nlyte Software is the independent provider of data center infrastructure Management (DCIM) solutions.

    mharrisMARK HARRIS
    Nylte Software

    I attended this year’s AFCOM Data Center World held at the Mandalay Bay convention center in Las Vegas, and felt compelled to write about my experience given the excitement and exchange of ideas at the event. The emphasis of this event was on real solutions for today’s data center and facility managers. Some of the industry’s largest end-users and vendors in attendance were engaged in very real conversations surrounding today’s modern IT infrastructure and how to preserve existing data center assets confirming what we are hearing with our own customers.

    The event covered a range of topics including: new ways of supporting high density computing, vendors providing some form of DCIM, convergence on standard IP-based connections for monitoring and control, questions surrounding costs for services and resources, and even an new intelligent rack system was shown. I should also mention that I was intrigued by the in-person conversations surrounding the emerging hybrid model of computing to include in-house, colocation, cloud and modular and the economics driving this mix.

    Cost Discussions

    What is this new model? It is about delivering IT services at a specific cost. In the past, we all operated under the umbrella of delivering IT servers at ANY cost. Today, it’s really about specific costs, and each type of service or application has different cost models. Back-office email, for instance, may have a costing model that is vastly different than e-commerce revenue transaction processing systems. The AFCOM show attendees are beginning to talk about this. The vendors are also beginning to talk about the economics, but surprisingly, most of these discussions between end-user and vendors are not aligned. The show vendors were talking about discrete product cost, while the end-users wanted to talk about service delivery costs – a clear disconnect.

    It turns out that trying to quantify the total cost associated with work executed is hard to do as a vendor. The end-user sees all the pieces working together and can do some simple math to figure out their costs per unit of work. Vendors at the show seemed to struggle with that idea. They wanted to provide product costs, but had a hard time participating in bigger and more strategic discussions, which involved many components working together.

    Some key observations emerged at AFCOM:

    1. High-Density Data Centers – Doing More with Less
    Many of the show floor vendors were demonstrating new solutions created for the world of high-density computing. Squeezing more computing into less space, powering it, and keeping it cool, with much more intelligent cooling, much higher capacity power distribution, more efficient fans and everything else needed to create the data center filled with 20kW racks. It was good to see the forward-looking solutions, in a world that currently runs 4-5kW racks on average. This density theme also manifested itself in discussions about Direct Current and Over Current Protection considerations. Unicom, ServerTech, Cooper and StarLine took the lead on these topics.

    2. Vendors Jump Onto the DCIM Bandwagon
    DCIM was one of the most prevalent themes throughout the show and its educational sessions. Many vendors – hardware and software vendors alike – wanted to associate with the DCIM movement. And why not? Accordingly to Gartner, Forrester and The 451 Group, adoption of DCIM is one of the biggest cost-containment opportunities for the the data center. That said, most DCIM software vendors at the show were talking about building islands. Tactical islands of must-have features offered by their products, but the discussions got very thin when looking for an off-the-shelf, strategically integrated story. (However every vendor happily volunteered to ENGINEER a custom integration on a T&M basis). This is partly due to the use of the term “DCIM” to describe anything new in the data center monitoring and management space. Many of the booth graphics stated “DCIM” in their first bullet of value, but what they actually delivered ranged all over the place. There were the big element management solution providers, the environmental and power distribution vendors, the cooling vendors and even the remote access solutions which were popular 5 years ago. End-users were just as confused with how to apply what they were seeing on the show floor to their strategic charter to get their data center economics under control.

    3. The Cloud and Colocation Realities
    Cloud topics proliferated across the educational sessions. Using the cloud, planning the cloud, when a cloud is required, how the cloud will fit with other styles of computing, etc. In spite of the “cloud everything” message so common recently, the mixed hybrid model of computing is clearly here to stay. While colocation vendors were limited in number at the show, it was clear that our next 10 to 15 years of computing will include some individually unique mix of in-house data centers, colocation space, cloud services and modular approaches. While most of the show was full of vendors that catered to traditional in-house data centers, a fair amount of the products shown could easily be applied to colocation space as well.

  • Structure Conference

    GigaOM will host its Sixth Annual Structure conference, June 19-20 in San Francisco. As computing becomes more cost effective, the ability to capture data expands, and disruption is everywhere, there is a greater need to hear from industry experts who are getting their hands dirty with deployments.

    Cloud practitioners representing a variety of sectors – including retail, consumer goods and energy – will examine how real-time business needs are shaping IT architectures and what tomorrow’s cloud will look like.

    Speakers at Structure include:
    • Pat Gelsinger, VMware
    • Werner Vogels, Amazon
    • Satya Nadella, Microsoft
    • Jay Parikh, Facebook
    • Bob Muglia, Juniper
    • Jeff Dean, Google
    • Lew Moorman, Rackspace
    • Kevin Scott, LinkedIn
    • Raj Patel, Cisco Systems
    • Dean Nelson, eBay
    • Gary Grider, Los Alamos National Laboratory
    • Ben Haines, Pabst Brewing Company
    • Bobby Murphy, Snapchat
    • Ralph Loura, The Clorox Company
    • Stefan Apitz, Box
    • Peter Gross, Bloom Energy
    • Lew Cirne, New Relic
    • Aneel Bhusri, Workday

    More details on speakers and sessions are available on GigaOM Structure website.

    Venue
    Mission Bay Conference Center at UCSF
    1675 Owens Street
    San Francisco, CA 94158
    (+1) 866-431-UCSF

    For more events, return to the Data Center Knowledge Events Calendar.

  • DCK Webinar: Data Center Energy Efficiency

    Data Center Knowledge will host a free webinar on Thursday, May 30 to bring you a comprehensive look at maximizing efficiency in the data center.

    DCK contributor Julius Neudorfer will present on the hot topic of energy efficiency. Neudorfer is CTO at North American Access Technologies, Inc. Following the presentation, there will be a Q&A session with your peers, Neudorfer and industry experts from Digital Realty Trust. Sign up today and you will receive further instructions via e-mail.

    Title: Data Center Energy Efficiency
    Date: Thursday, May 30, 2013
    Time: 2 pm Eastern/ 11 am Pacific (Duration 60 minutes, including time for Q&A)
    Register: Sign up for the webinar.

    The Data Center Knowledge webinar series continues, providing free, educational content focused on mission-critical issues facing today’s data center managers, owners and investors. Each webinar is an opportunity to learn from top experts in the field.

  • Friday Funny: Take Time to Smell the Flowers

    It’s Friday! That means the work week is ending and it’s time for some data center laughs. This week we’re voting on the “May Flower” cartoon by our artist Diane Alber. Please scroll down and vote!

    The caption contest works like this: We provide the cartoon and you, our readers, submit the captions. We then choose finalists and the readers vote for their favorite funniest suggestion.

    The winner will receive his or her caption in a signed print by Diane!

    For the previous cartoons on DCK, see our Humor Channel.

  • Video: eBay DSE Measures Infrastructure “MPG”

    In this video, Dean Nelson, senior director of global data strategy, architecture & operations, eBay, presents a review of eBay’s Digital Service Efficiency (DSE) methodology to the participants in the The Green Grid Forum 2013. DSE is eBay’s new system of metrics to tie data center performance to business and transactional metrics, measuring key variables of revenue, cost, performance, and environmental impact based on user consumption of services provided. The video includes the full session, including audience questions, and runs 47:39.

    For more stories about eBay, see our eBay Channel. For additional video, check out our DCK video archive and the Data Center Videos channel on YouTube.

  • What is a FLOP?

    Ever wonder about the meaning of a FLOP? Beyond a measure of number crunching, or simply the basis of the acronym – Floating Point Operation — what does FLOP mean for computing, and more specifically, supercomputing? This video with Greg Newby, director of the Arctic Region Supercomputing Center, at the University of Alaska, Fairbanks and Per Nyberg of Cray, Inc., dives into the meaning of flops as a measurement to compare high-performance computer speeds and what it means for scientists. “Scientists want to know, How quickly can I answer my problem?” said Newby. They also discuss the trends in today’s multi-core, many-core supercomputing and how it impacts the measurement of processing speed. The video, produced by Frontier Scientists at University of Alaska, Fairbanks, runs 4:15.

    For more stories about supercomputing, see our High Performance Computing Channel. For additional video, check out our DCK video archive and the Data Center Videos channel on YouTube.

  • Friday Funny: Into Every Life, A Little Rain Must Fall

    It’s Friday and time for a little data center humor! Before you head out for the weekend, add your suggestions for the data center cartoon caption contest below.

    This time, our data center gurus, Kip and Gary, are facing a little indoor water feature in the data hall.

    For those of you who don’t know, here’s how it works: We provide the cartoon (drawn by Diane Alber, our awesome data center cartoonist) and you, our readers, submit the captions. We then choose finalists and the readers vote for their favorite funniest suggestion. The winner will receive their caption in a signed print by Diane.

    Please visit Diane’s website Kip and Gary for more of her data center cartoon humor.

    april-showers-smClick to enlarge.

    For the previous cartoons on DCK, see our Humor Channel.

  • DCK Webinar: Saving Up to 30% on Ops Costs

    Moderated by Data Center Knowledge Editor-in-Chief Rich Miller, the next Data Center Knowledge webinar, entitled, Is It Worth 60 Minutes to Save Up to 30% in Data Center Operation costs? will feature an in-depth conversation with Intel’s Jeff Klaus, Director of Data Center Manager (DCM) Solutions.

    The webinar will revolve around specific use cases as they apply to real data center situations. For example, in a jointly tested POC conducted over a three-month period in late 2011 at Korea Telecom’s existing Mok-dong Data Centre in Seoul, South Korea, results showed that a Power Usage Effectiveness (PUE) of 1.39 would result in approximately 27 percent energy savings. This could be achieved by using a 22◦C chilled water loop.

    Register today to join Rich Miller of Data Center Knowledge and Intel’s Jeff Klaus on April 25, 2013 (2:00pm-3:00pm EDT) to learn how these types of assessments can represent a significant savings in data center environment management.

  • AFCOM Names Finalists for DC Manager of Year

    AFCOM, the world’s leading data center association, named the 2013 finalists for its annual “Data Center Manager of the Year” award, nominating Tate Cantrell, chief technology officer for Verne Global; Donna Manley, senior IT director, computer operations at the University of Pennsylvania; and David Shaw, senior vice president of IO. The award will be given at the Data Center World spring conference.

    These data center professionals are being honored for their outstanding leadership and excellence in the field. “We received many submissions this year for the DCMY award and like in the past the selection was difficult. These three individuals stood out at as leaders for their companies and have shown a high level of commitment to the Data Center industry,” said Tom Roberts, president of AFCOM and chairperson of Data Center World. “Their methods, innovations and contributions inspire all of us to keep moving forward toward continual improvement.”

    Tate_VerneTATE CANTRELL
    Verne Global

    Tate Cantrell, Chief Technology Officer at Verne Global

    Notable Achievement: Verne Global’s Icelandic campus is the industry’s first efficient, sustainable, recyclable, zero emission data center.

    Tate Cantrell is responsible for product design and development, and data center operations. Mr. Cantrell has overseen the build-out and operations of some the largest and most sophisticated data centers in the industry.

    • 15+ Years’ Experience
    • 25 Staff Members
    • Innovative designs utilizing geothermal and hydroelectric energy for power and cooling
    • ISO 27001 Certification Standard for Information Security
    Donna-ManleyDONNA MANELY
    U of Penna

    Donna Manley, Senior IT Director at the University of Pennsylvania

    Notable Achievement: University of Pennsylvania is the only Ivy League University Data Center with ISO 9001:2008 certification and HIPAA, PCI, and FISMA compliancy

    Donna Manley is a senior IT director at the University of Pennsylvania’s Information Systems and Computing (ISC) Systems Engineering and Operations organization. Ms. Manley evaluates evolving technologies and the changing demands of the Penn community, finding creative ways to prolong the life of the existing Data Center well beyond the expected capacity limits. Despite several additions to the Computer Operations’ services portfolio, process reengineering and workflow automation strategies have resulted in sustained staffing and budget levels over an eight year period.

    • 25+ years’ experience Data Center Management in various industry verticals
    • 28 Staff Members
    • IT Infrastructure Library (ITIL) V2 and V3 Certified – Foundations
    • President – AFCOM Mid-Atlantic Chapter (6 years)
    David-Shaw-tnDAVID SHAW
    IO

    David Shaw, Senior Vice President at IO

    Notable Achievement: Manages over 1.5 million square feet of data center capacity – including the world’s largest modular data center.

    As Senior Vice President at IO, David Shaw is responsible for IO’s global Data Center as a Service (DCaaS™). Mr. Shaw oversaw the opening of the world’s largest modular data center, IO.New Jersey, in Edison, New Jersey, and ensured that the data center was 100 percent operational during Hurricane Sandy and in its aftermath in late 2012.

    • 4 US data centers and currently implementing new data center in Singapore
    • 50 Staff Members
    • 25 years of global data center operations, engineering management & information technology experience
    • Certified Specialist in Information Technology Infrastructure (ITIL)

    More detailed bios on the Data Center Manager of the Year Finalists can be found at http://www.datacenterworld.com.

    The Spring Data Center World 2013 will be held April 28 – May 2 at Mandalay Bay in Las Vegas. The schedule for the Spring 2013 Data Center World can be found at http://www.datacenterworld.com/spring2013/attend/schedule-of-events/.

    To track the DCW conference on Twitter, follow @datacenterworld and search for the hashtag: #datacenterworld.

  • Perspectives on Cloud, Data Center Migration & Networks

    This week’s Industry Perspectives represented an intersection of top-of-mind topics for data center professionals and executives. Three columns considered different aspects of the cloud, including building a model for Return on Investment, planning for cloud downtime, and making the cloud more resilient. The other columns this week gave excellent advice on planning and executing a data center relocation and aspects of your network to consider during peak usage, such as during the NCAA games. If you missed any, here they are in a neat package. Enjoy!

    March Madness: Lessons for Networks: According to a Harris Interactive poll, 64 percent of Americans watch online video while at work. As employees flocked to watch March Madness, network administrators are focusing on new ways to withstand the increase in demand and keep business applications responsive. writes David White of Ipanema Technologies.

    Five Essential Keys to Success When Relocating a Data Center: A data center relocation (DCR) is not just about moving servers and plugging them in at their new locale. In reality, DCR can be one of a company’s most complex and challenging endeavors, writes Bruce Cardos of Datalink.

    Microsoft’s Journey: Solving Cloud Reliability With Software: Cloud service providers need to move beyond traditional reliance on complex hardware redundancy schemes and instead focus on developing more intelligent software that can monitor, anticipate, and efficiently manage the failure of physical infrastructures, writes David Gautier of Microsoft. When service availability is engineered in more resilient software, there is greater opportunity to materially rethink how the physical data center is engineered.

    Downtime & Cloud: What’s The Role of the Cloud in RTO and RPO Planning? Spanning from basic file backup to a total restore, the lower costs and higher resiliency of cloud infrastructure have re-framed disaster recovery discussions by providing greater options, writes Cortney Thompson of Green House Data.

    Building A Cloud-Savvy Model for TCO and ROI: You might be surprised to learn that many large organizations commit to cloud computing without really knowing their Total Cost of Ownership (TCO) and projected Return on Investment (ROI), writes Ravi Rajagopal of CA Technologies. It’s not that they’re irresponsible and ignoring this requirement. It’s that the tools most IT teams use to evaluate TCO and ROI are inadequate for application to the cloud.

    Industry Perspectives is a content channel at Data Center Knowledge highlighting thought leadership in the data center arena. See our guidelines and submission process for information on participating. View previously published Industry Perspectives in our Knowledge Library.

  • Top 10 Women in Cloud Named at Cloud Connect

    CloudNow, an association for women in cloud computing, honored ten exceptional women in cloud computing this week during Cloud Connect Silicon Valley.

    “CloudNOW is paying tribute to ten outstanding women in cloud computing for their contributions, accomplishments and thought leadership in our dynamic industry,” said Jocelyn DeGance Graham, founder of CloudNOW. “We’re honored to be part of Cloud Connect and at the cutting edge of the cloud conversation — a place where women are playing a key role.”

    CloudNOW is a non-profit consortium of the leading women in cloud computing, focused on using technology for the overall professional development of women from around the world by providing a forum for networking, knowledge sharing, mentoring and economic growth.

    “Cloud computing is transforming business across virtually every industry, and it’s imperative for women to be key players in this strategic shift,” said Lauren States, Vice President and CTO for the IBM Corporate Strategy team, and CloudNOW Advisor.

    This year’s Top Ten Women in Cloud Award recipients are:

    • Becky Swain, Director Cloud Assurance, PwC; and Founding Member, Cloud
      Security Alliance (CSA)
    • Cara Beston, Partner, PwC
    • Lori MacVittie, Senior Technology Analyst, F5 Networks
    • Lydia Leong, Vice President of Research and Cloud Expert, Gartner
    • Manjula Talreja, Vice President Global Cloud Business Development, Cisco
    • Margaret Dawson, Vice President of Product Marketing, and Cloud
      Evangelist, HP
    • Michelle Munson, Co-Founder and President, Aspera
    • Rhonda MacLean, Founder, MacLean Risk Partners, and former Global Chief
      Information Security Officer at Barclays and Bank of America
    • Susan Wu, Founder Persona Equity
    • Vanessa Alvarez, Director Product Marketing, Gridstore

    Cloud Connect, produced by UBM Tech, is taking place this week at the Santa Clara Convention Center in Santa Clara, California.

  • Friday Funny: Vote for a Caption for Raised Floor Adventures

    It’s finally Friday! So that means it’s  time for a little data center humor. We run our caption contest on Fridays, with cartoons drawn by Diane Alber, our fav data center cartoonist! Please visit Diane’s website Kip and Gary for more of her data center humor.

    The caption contest works like this: We provide the cartoon and you, our readers, submit the captions. We then choose finalists and the readers vote for their favorite funniest suggestion.

    This week, we are voting on suggestions for Raised Floor Adventures. Please scroll down and vote.

    For the previous cartoons on DCK, see our Humor Channel.

  • Top 10 Data Center Stories, March 2013

    Microsoft-dublin-newhall-47

    The new data halls in Microsoft’s Dublin data center feature white cabinets and narrower hot aisle containment systems. (Photo: Microsoft)

    During the month of March, Microsoft news dominated our reader’s attention, with a feature on its ultra-efficient Dublin data center topping our list of most popular articles. Another Microsoft story about a Hotmail outage also garnered interest. Other topics this month include eBay’s new monitoring dashboard, OVH raising funds for U.S. expansion and Brocade resisting a “zombie” attack. Here are the most viewed stories on Data Center Knowledge for March 2013, ranked by page views. Enjoy!

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