Mega, Tera, Hexa and now ?

Dialogue of Ocean 13 from 2007 movie
Danny: Hexa Byte ?
Ramon: You know what’s a Tera Byte ?
Danny: Yeah, its uh hmm;
Rusty: Hexa Byte’s a million tera bytes


Petabyes
According to isoHunt, the total amount of bittorrent based shared content is currently more than 1.7 petabytes.
Source from Wiki