Close
  • Latest News
  • Artificial Intelligence
  • Video
  • Big Data and Analytics
  • Cloud
  • Networking
  • Cybersecurity
  • Applications
  • IT Management
  • Storage
  • Sponsored
  • Mobile
  • Small Business
  • Development
  • Database
  • Servers
  • Android
  • Apple
  • Innovation
  • Blogs
  • PC Hardware
  • Reviews
  • Search Engines
  • Virtualization
Read Down
Sign in
Close
Welcome!Log into your account
Forgot your password?
Read Down
Password recovery
Recover your password
Close
Search
Logo
Subscribe
Logo
  • Latest News
  • Artificial Intelligence
  • Video
  • Big Data and Analytics
  • Cloud
  • Networking
  • Cybersecurity
  • Applications
  • IT Management
  • Storage
  • Sponsored
  • Mobile
  • Small Business
  • Development
  • Database
  • Servers
  • Android
  • Apple
  • Innovation
  • Blogs
  • PC Hardware
  • Reviews
  • Search Engines
  • Virtualization
More
    Subscribe
    Home Latest News
    • Networking
    • Storage
    • Virtualization

    Global Data Storage Capacity Totals 295 Exabytes: USC Study

    Written by

    Fahmida Y. Rashid
    Published February 11, 2011
    Share
    Facebook
    Twitter
    Linkedin

      eWEEK content and product recommendations are editorially independent. We may make money when you click on links to our partners. Learn More.

      There are reports aplenty about technology driving a data explosion. University of Southern California researchers actually sat down and calculated that humans can store, communicate and compute about 295 exabytes of information, or about 404 billion CDs.

      In a study published Feb. 10 in Science Express, an electronic journal that provides select Science articles ahead of print, researchers examined data from more than 1,000 sources to calculate how much data-storage capacity exists. The study, which looked at data from 1986 to 2007, did not try to calculate exactly how much data actually existed.

      “This is the first study to quantify humankind’s ability to handle information and how it has changed in the last two decades,” said lead author Martin Hilbert, a doctoral candidate at the USC Annenberg School for Communication and Journalism.

      Hilbert and his team calculated the figure by first estimating the amount of data held on 60 analog and digital technologies during the period from 1986 to 2007. They considered everything from computer hard drives to obsolete floppy discs, and X-ray film to microchips on credit cards, he said.

      “The world’s technological information-processing capacities are growing at exponential rates,” Hilbert said. General-purpose computing capacity is growing at about 58 percent per year, the study said. Telecommunications grew by 28 percent annually, and storage capacity grew by 23 percent, according to the study.

      “Basically what you can do with information is transmit it through space, and we call that communication. You can transmit it through time; we call that storage. Or you can transform it, manipulate it, change the meaning of it and we call that computation,” Hilbert said.

      The calculated total, 295 exabytes refers to storage capacity in 2007, according to the researchers. This is about 80 times more information per person than was ever stored in the historic Library of Alexandria in Egypt, Hilbert told eWEEK. The actual number for 2011 is likely to be much higher.

      Humans sent 1.9 zettabytes of information through broadcast technology such as televisions and GPS during that 21-year period, the study found. That’s equivalent to every person in the world receiving 174 newspapers every day or every television in the world running for three hours a day, Hilbert said.

      More than 65 exabytes of information was shared over two-communications technology, such as cell phones and e-mail. Communications have increased by an average of 28 percent every year since 1986. About 65 exabytes of information was shared in 2007, or the equivalent of every single person sending out the contents of six newspapers every day.

      “Using word-based chat, one would need to chat for two months and three weeks nonstop to communicate the information that the average person telecommunicates through multimedia content in one day only,” Hilbert said.

      All this feels like unimaginable numbers. Just for comparison, an exabyte is equivalent to 1,000 petabytes, or a million terabytes. An exabyte has 20 zeros following the number. A zettabyte is 1,000 exabytes.

      While performing calculations, the researcher discovered the digital age “began” in 2002, the first year there was more data stored on digital storage than on analog, Hilbert said. About 75 percent of stored information was in an analog format such as videocassettes and books in 2000. By 2007, the flip was nearly complete, with 94 percent of information stored in digital form, Hilbert said.

      The various storage types examined read like a list of forgotten devices. In 1986, “vinyl long-play records” made up 14 percent of storage and audiocassettes made up 12 percent, according to the study. Digital storage first became a significant factor in 2000, when it accounted for 25 percent of total storage capacity. The proportion of paper-based storage such as books and newspapers declined, from a mere 0.33 percent in 1986 to 0.007 percent in 2007. However, that didn’t mean information from paper sources declined, since in absolute terms, paper grew from 8.7 to 19.4 optimally compressed petabytes, the study estimated.

      Priscila Lopez of the Open University of Catalonia co-authored the study with Hilbert. Hilbert said a copy of the Science article is available on his Website.

      Fahmida Y. Rashid
      Fahmida Y. Rashid

      Get the Free Newsletter!

      Subscribe to Daily Tech Insider for top news, trends & analysis

      Get the Free Newsletter!

      Subscribe to Daily Tech Insider for top news, trends & analysis

      MOST POPULAR ARTICLES

      Artificial Intelligence

      9 Best AI 3D Generators You Need...

      Sam Rinko - June 25, 2024 0
      AI 3D Generators are powerful tools for many different industries. Discover the best AI 3D Generators, and learn which is best for your specific use case.
      Read more
      Cloud

      RingCentral Expands Its Collaboration Platform

      Zeus Kerravala - November 22, 2023 0
      RingCentral adds AI-enabled contact center and hybrid event products to its suite of collaboration services.
      Read more
      Artificial Intelligence

      8 Best AI Data Analytics Software &...

      Aminu Abdullahi - January 18, 2024 0
      Learn the top AI data analytics software to use. Compare AI data analytics solutions & features to make the best choice for your business.
      Read more
      Latest News

      Zeus Kerravala on Networking: Multicloud, 5G, and...

      James Maguire - December 16, 2022 0
      I spoke with Zeus Kerravala, industry analyst at ZK Research, about the rapid changes in enterprise networking, as tech advances and digital transformation prompt...
      Read more
      Video

      Datadog President Amit Agarwal on Trends in...

      James Maguire - November 11, 2022 0
      I spoke with Amit Agarwal, President of Datadog, about infrastructure observability, from current trends to key challenges to the future of this rapidly growing...
      Read more
      Logo

      eWeek has the latest technology news and analysis, buying guides, and product reviews for IT professionals and technology buyers. The site’s focus is on innovative solutions and covering in-depth technical content. eWeek stays on the cutting edge of technology news and IT trends through interviews and expert analysis. Gain insight from top innovators and thought leaders in the fields of IT, business, enterprise software, startups, and more.

      Facebook
      Linkedin
      RSS
      Twitter
      Youtube

      Advertisers

      Advertise with TechnologyAdvice on eWeek and our other IT-focused platforms.

      Advertise with Us

      Menu

      • About eWeek
      • Subscribe to our Newsletter
      • Latest News

      Our Brands

      • Privacy Policy
      • Terms
      • About
      • Contact
      • Advertise
      • Sitemap
      • California – Do Not Sell My Information

      Property of TechnologyAdvice.
      © 2024 TechnologyAdvice. All Rights Reserved

      Advertiser Disclosure: Some of the products that appear on this site are from companies from which TechnologyAdvice receives compensation. This compensation may impact how and where products appear on this site including, for example, the order in which they appear. TechnologyAdvice does not include all companies or all types of products available in the marketplace.