Yottabyte

In computing, a yottabyte (YB) is the largest unit of measurement for computer data. The prefix “yotta” is part of the International System of Units (SI), and means 10 to the 24th power. It is equivalent to a quadrillion gigabytes, 1,000 zettabytes or 1,000,000,000,000,000,000,000,000 bytes.