It's about as much as Mozy.
It's about four-fifths as much as The Books in the Library of Congress.
In other words, the amount of The Books in the Library of Congress is 1 times 50 petabytes.(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 70 petabytes if fully digitized. The collection contains a total of 142,544,498 items as of 2009.
It's about ten 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 0.10 times 50 petabytes.(2010 figures)
All letters delivered by the United States Postal Service in 2010 will equate to 5 petabytes (pB) 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 sixteen times as much as Netflix's Watch Instantly catalog.
In other words, 50 petabytes is 15.90 times the amount of Netflix's Watch Instantly catalog, and the amount of Netflix's Watch Instantly catalog is 0.0629 times that amount.(May, 2013 figures)
The uncompressed source copies of all the movies available for instant viewing on Netflix total 3.14 petabytes. According to estimates, videos streamed from Netflix account for about 29% of all Internet traffic
It's about twenty times as much as a Human Brain.
In other words, the amount of a Human Brain is 0.05 times 50 petabytes.According to Northwestern University psychology professor Paul Reber, the capacity of the human brain is a theoretical 2.5 petabytes. 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 twenty times as much as The US Census Bureau.
In other words, the amount of The US Census Bureau is 0.05 times 50 petabytes.(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 2.5 petabytes (pB) 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.
It's about twenty times as much as an Imgur's Monthly Bandwidth.
In other words, 50 petabytes is 23.80 times the amount of an Imgur's Monthly Bandwidth, and the amount of an Imgur's Monthly Bandwidth is 0.042 times that amount.(Jan-Feb, 2012 figures)
Imgur, the free online image hosting service, used a total of 2.11 petabytes in bandwidth between January and February, 2012. The site has served up over 15 billion images in that time.