>There are a thousand gigabytes in a terabyte, a thousand terabytes in a petabyte, a thousand petabytes in an exabyte, a thousand exabytes in a zettabyte, and a thousand zettabytes in a yottabyte. In other words, a yottabyte is 1,000,000,000,000,000GB. Are you paranoid yet?
Actually that number is wrong, replace “a thousand” in the above with “one thousand twenty four” and the multiplication is correct. (IE computer storage is measured in 2^n units, not 10^n... don’t let them shortchange you.)
To make things even more confusing there are now standard prefixes to make the distinction. See the Wikipedia entry for Yottabyte for details.