What is a Zettabyte?

Note: The Wikipedia definition follows here.  Have a look in case you are not already up to speed on this rather commodious concept. But stay tuned because we have something else quite different in mind.

A zettabyte (symbol ZB, derived from the SI prefix zetta-) is a unit of information or computer storage equal to one sextillion (one long scale trilliard) bytes.

As of April 2012, no storage system has achieved one zettabyte of information. The combined space of all computer hard drives in the world was estimated at approximately 160 exabytes in 2006.  This has increased rapidly however, as Seagate reported selling 330 exabytes worth of hard drives during the 2011 Fiscal Year.  As of 2009, the entire World Wide Web was estimated to contain close to 500 exabytes.  This is a half zettabyte.

  • 1,000,000,000,000,000,000,000 bytes = 10007 bytes = 1021 bytes

The term “zebibyte” (ZiB), using a binary prefix, is used for the corresponding power of 1024.

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What is a Zettabyte?


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