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Definition: petabyte


One quadrillion bytes. Also PB, Pbyte and P-byte. In 2012, Facebook indicated that it stored 100 petabytes of member data. See Petabyte Age, peta, brontobyte, Hadoop, binary values, petabit and space/time.




Hard to Imagine
A large datacenter holds petabytes of data in all of its drives combined. However, we have a long way to go for a single storage drive to hold just one petabyte.






Twenty-Megabyte Hard Disk
In 1984, people were amazed at how much the hard disk on IBM's new PC AT could hold. (Image courtesy of IBM.)





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