It depends on the bottle. The normal sized bottles have 16 ounces in them which is 2 cups. Some of the larger bottles will have 20 or 24 ources (2.5 or 3 cups). Every 8 ounces equals one cup. Now as far as needing 8 cups of water each day goes that is old information.
A gigabyte (GB) is a measure of computer data storage capacity that is roughly equivalent to 1 billion bytes. A gigabyte is two to the 30th power or 1,073,741,824 in decimal notation. The term is pronounced with two hard Gs. The prefix giga comes from a Greek word meaning giant.
The petabyte is a multiple of the unit byte for digital information. The prefix peta indicates the fifth power of 1000 and means 1015 in the International System of Units (SI), and therefore 1 petabyte is one quadrillion (short scale) bytes, or 1 billiard (long scale) bytes. The unit symbol for the petabyte is PB.