A unit of information equal to one sextillion (1021) or, strictly, 270 bytes.
- A zettabyte, incidentally, is roughly half a million times the entire collections of all the academic libraries in the United States.
- We are talking just under half a Zettabyte.
- This means that 1,000 exabytes equals 1 zettabyte (ZB), and 1,000 zettabytes equals 1 yottabyte (YB).
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