Top 10 Largest Databases in the World
1. World Data Centre for Climate
220 terabytes of web data 6 petabytes of additional data
2. National Energy Research Scientific Computing Center
2.8 petabytes of data Operated by 2,000 computational scientists
3. AT&T
323 terabytes of information 1.9 trillion phone call records
4. Google
91 million searches per day accounts for 50% of all internet searches Virtual profiles of countless number of users
5. Sprint
2.85 trillion database rows. 365 million call detail records processed per day At peak, 70,000 call detail record insertions per second
6. ChoicePoint
250 terabytes of personal data Information on 250 million people
7. YouTube
100 million videos watched per day 65,000 videos added each day 60% of all videos watched online At least 45 terabytes of videos
8. Amazon
59 million active customers More than 42 terabytes of data
9. Central Intelligence Agency
100 FOIA items added each month Comprehensive statistics on more than 250 countries and entities Unknown number of classified information
10. Library of Congress
130 million items (books, photographs, maps, etc) 29 million books 10,000 new items added each day 530 miles of shelves 5 million digital documents 20 terabytes of text data
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