Walmart's databases are estimated to contain more than 2.5 petabytes, the same size as the entire U.S. Library of Congress book collection.

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Walmart's databases are significantly larger, containing more than 2.5 petabytes of data, which is several times the size of the print collections of the U.S. Library of Congress. The Library of Congress's print collection is estimated to be about 10 terabytes if digitized, which is much smaller than 2.5 petabytes.

Walmart's Databases Are Estimated to Contain More Than 2