bytes.
Although the term exabyte is sometimes used to refer
to 
bytes, such usage is deprecated
in favor of the standard SI naming convention of 1 exabyte
being equal to 
bytes.
Exbibyte
See also
Byte, Exabyte, Gibibyte, Kibibyte, Mebibyte, Pebibyte, TebibyteExplore with Wolfram|Alpha
References
National Institute of Standards. "Prefixes for Binary Multiples." http://physics.nist.gov/cuu/Units/binary.html.Referenced on Wolfram|Alpha
ExbibyteCite this as:
Weisstein, Eric W. "Exbibyte." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Exbibyte.html