Largest Databases in the World

01. World Data Centre for Climate

• 220 terabytes of web data
• 6 petabytes of additional data

02. National Energy Research Scientific Computing Center

• 2.8 petabytes of data
• Operated by 2,000 computational scientists

03. AT&T

• 323 terabytes of information
• 1.9 trillion phone call records

04. Google

• 91 million searches per day
• accounts for 50% of all internet searches
• Virtual profiles of countless number of users

05. Sprint

• 2.85 trillion database rows.
• 365 million call detail records processed per day
• At peak, 70,000 call detail record insertions per second

06. ChoicePoint

• 250 terabytes of personal data
• Information on 250 million people

07. 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

08. Amazon

• 59 million active customers
• More than 42 terabytes of data

09. 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

Hiran Manjula

FB DOC