It's about as much as The Internet.
(2005 figures) (estimated)
Although the Internet is continuously changing, a 2005 estimate by Google CEO Eric Schmidt was that the total amount of data on the Internet would measure about 0.005 zettabytes. An estimated 1 trillion web pages are published on the Internet, excluding photos, videos, and music content.
It's about 80 times as much as The Books in the Library of Congress.
In other words, the amount of The Books in the Library of Congress is 0.01 times 0.0049 zettabytes.(2009 figures) (digitized entire collection)
The total collection of books, photographs, and other media housed by the United States Library of Congress would occupy about 0.0000700 zettabytes if fully digitized. The collection contains a total of 142,544,498 items as of 2009.
It's about 100 times as much as Mozy.
In other words, the amount of Mozy is 0.01 times 0.0049 zettabytes.(2009 figures) (total file storage)
Mozy, the online data backup service, stores about 0.0000500 zettabytes of data backed up its users. Founded in 2005, Mozy's customer base has grown to 1 million personal and 60,000 business subscribers in just 5 years.
It's about 1,000 times as much as The Letters Delivered by the Postal Service in 2010.
In other words, the amount of The Letters Delivered by the Postal Service in 2010 is 0.001 times 0.0049 zettabytes.(2010 figures)
All letters delivered by the United States Postal Service in 2010 will equate to 0.00000500 zettabytes of data if stored digitally. In delivering the mail, the Postal Service fleet travels a total of 1.25 billion miles annually.
It's about 1,500 times as much as Netflix's Watch Instantly catalog.
In other words, 0.0049 zettabytes is 1,640 times the amount of Netflix's Watch Instantly catalog, and the amount of Netflix's Watch Instantly catalog is 0.00061 times that amount.(May, 2013 figures)
The uncompressed source copies of all the movies available for instant viewing on Netflix total 0.000002990 zettabytes. According to estimates, videos streamed from Netflix account for about 29% of all Internet traffic
It's about 2,000 times as much as a Human Brain.
In other words, the amount of a Human Brain is 0.0005 times 0.0049 zettabytes.According to Northwestern University psychology professor Paul Reber, the capacity of the human brain is a theoretical 0.00000240 zettabytes. Each lobe of the brain consists of folded neural tissue with a total area, if unfolded, of about 0.24 sq. m.
It's about 2,000 times as much as The US Census Bureau.
In other words, the amount of The US Census Bureau is 0.0005 times 0.0049 zettabytes.(a.k.a. United States Census Bureau, a.k.a. Bureau of the Census) (2010 figures) (total active data)
The United States Census Bureau administers 0.00000240 zettabytes of demographic and population data gathered through the decennial census and other surveys. The Census Bureau makes the results of each census public 72 years after they are gathered.