Wiktionary
n. (context computing English) A unit of information or storage equal to 1015 bits
Wikipedia
The petabit is a multiple of the unit bit for digital information or computer storage. The prefix peta (symbol P) is defined in the International System of Units (SI) as a multiplier of 10 (1 quadrillion, short scale), and therefore
1 petabit = = = 1000 terabits.The petabit has the unit symbol Pbit or Pb.
The petabit is closely related to the pebibit, a unit multiple derived from the binary prefix pebi of the same order of magnitude, which is equal to = , or approximately 13% larger than the petabit.
Usage examples of "petabit".
However, normal personal assists didn’t come with a causal channel plug-in, especially one with a ninety-light-year reach and five petabits of bandwidth.
Even though almost two petabits had been used when the agent-in-place passed it to him via a dead letter drop on a park bench, it was outrageously valuable to Martin.