How big is a zettebyte?

A zettabyte is a unit of digital information storage equal to 1 sextillion bytes, or (10^{21}) bytes. It can also be expressed as 1,000 exabytes or 1 million petabytes. To put it in perspective, a zettabyte could store approximately 250 billion DVDs worth of data. This massive scale is often used in discussions about global data generation and storage capacities.