It's about twelve times as much as All Spoken Words in Human History (recorded)
In other words, the amount of All Spoken Words in Human History (recorded) is 0.083 times 502 zettabytes.(2003 figures) (assumes 16 Khz, 16-bit mono recording)
Criticizing a 2002 estimate of 0.0049 zettabytes, linguist and University of Pennsylvania professor Mark Liberman asserted that it would actually require 42 zettabytes to house a recording of all speech in human history, even at a relatively low level of quality. For the purposes of his calculations, Liberman estimated the total duration of such a project to include 416,390,367 years of continuous audio.
It's about 100,000 times as much as The Internet
In other words, the amount of The Internet is 0.00001000 times 502 zettabytes.(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 8,000,000 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 0.0000001000 times 502 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 10,000,000 times as much as Mozy
In other words, the amount of Mozy is 0.0000001000 times 502 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 100,000,000 times as much as The Letters Delivered by the US Postal Service in 2010
In other words, the amount of The Letters Delivered by the US Postal Service in 2010 is 0.00000001000 times 502 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 150,000,000 times as much as Netflix's Watch Instantly catalog
In other words, 502 zettabytes is 168,000,000 times the amount of Netflix's Watch Instantly catalog, and the amount of Netflix's Watch Instantly catalog is 0.000000005950 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 200,000,000 times as much as a Human Brain
In other words, 502 zettabytes is 210,000,000 times the amount of a Human Brain, and the amount of a Human Brain is 0.00000000480 times that amount.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.