petabytes equivalent of almost half a million DVDs this article petabytes this article McKenna 1 petabyte more than 20 petabytes more than 20 petabytes What does a petabyte look like? says says petabytes four percent of the data stored by Facebook McKenna 200,000 DVDsâ Computer Weekly explains computerweekly.com 200,000 DVDs’ a petabyte 2.000 Jahre 200,000 DVDs’ four times as much as the Library of Congress holds according to Computerweekly. 200,000 DVDs’ 200.000 DVDs this article Terabyte vs. petabyte a lot more than 20 petabytes