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petabyte
Petabyte.
Petabyte = 1,000 Terabytes.
I assume you mean terabyte, and a petabyte
As far as I know, there is no Pentabyte, but Petabyte. A Petabyte is equal to 1 048 576, or 2^20 Gigabytes.
there are exactly 1 million gb in 1 petabyte