It's about 75,000 times as much as The Google Earth database.
In other words, 0.0049 zettabytes is 74,700 times the amount of The Google Earth database, and the amount of The Google Earth database is 0.00001340 times that amount.(2006 figures) (raw imagery and indexes storage)
As of 2006, Google was storing 0.00000006570 zettabytes of raw image and index data for its satellite photo and virtual globe application, Google Earth. The application offers high resolution satellite imagery of 60% of the populated areas of the world, according to 2010 estimates.
It's about 100,000 times as much as The Amazon.com's databases.
In other words, 0.0049 zettabytes is 124,336 times the amount of The Amazon.com's databases, and the amount of The Amazon.com's databases is 0.000008042720 times that amount.(largest databases only; 2005 figures)
Amazon.com maintains information on the millions of items sold on it's e-Commerce website and the websites of its affiliate companies, as well as information on customer orders and browsing history, and excerpts from nearly a quarter-billion books in databases totaling an estimated 0.00000004035510 zettabytes of data. Amazon.com receives over 615 million visits to its US website each year.
It's about 800,000 times as much as a Gap, Inc. Customer Database.
In other words, the amount of a Gap, Inc. Customer Database is 0.000001000 times 0.0049 zettabytes.(a.k.a. The GAP Companies, a.k.a. Gap) (2012 figures)
The GAP Inc., the corporate parent of GAP store, Old Navy, and Banana Republic, has accumulated over 0.00000000700 zettabytes of data on almost a billion customers. The GAP, Inc remains the largest apparel retailer in the United States and was the largest in the world from the mid-1990s until about 2008.
It's about 1,500,000 times as much as Watson.
In other words, the amount of Watson is 0.000000770 times 0.0049 zettabytes.(data store only)
Watson, the IBM supercomputer famous for competing against humans on the televised trivia game show Jeopardy!, utilizes 0.00000000370 zettabytes of variously-structured data to formulate answers. While "thinking", Watson processes about 0.000000000450 zettabytes of data per second.
It's about 35,000,000 times as much as an iPod.
In other words, 0.0049 zettabytes is 33,600,000 times the amount of an iPod, and the amount of an iPod is 0.00000002980 times that amount.(a.k.a. Apple iPod) (2010 figures; for iPod classic, sixth generation)
A sixth-generation, iPod classic MP3 player offers a storage capacity of 0.0000000001460 zettabytes. Data is stored in the unit's hard drive, a 5,400 RPM SATA drive, which measures about 30 sq. cm (5 sq. in)
It's about 100,000,000 times as much as Wikipedia.
In other words, the amount of Wikipedia is 0.00000001000 times 0.0049 zettabytes.(2009 figures) (all languages)
As of 2009, Wikipedia held 0.0000000000480 zettabytes of publicly written and edited encyclopedia articles on 14.5 million subjects as well as associated commentary and discussion. Wikipedia is among the ten most popular websites on the Internet and the only non-profit entity in that group.
It's about 100,000,000 times as much as a Blu-ray Disc.
In other words, 0.0049 zettabytes is 110,000,000 times the amount of a Blu-ray Disc, and the amount of a Blu-ray Disc is 0.00000000910 times that amount.(a.k.a. BD) (dual-layer; Blu-ray disc)
A typical Blu-ray disc will hold 0.0000000000450 zettabytes of data. The increase in capacity versus a standard DVD is possible because of the smaller wavelength of blue light — 405 nanometers instead of 650 nanometers for the red laser light used in a DVD.