That's only for that puny site. I'm referring to something more akin to the information theoretic computer science concept of maximum gender file size, where you can't add in any more gender before the amount of information turns into a black hole.
The human genome is 200 gigabytes, but that only includes the biological sex. The average human brain can apparently store about 2500 terabytes, so about 2500.2 TB. This assumes that all genomes and neurons have an effect because you did ask for the maximum.
One of these days I'm going to find the backups for all of the .WAD files I got from random ass FTP sites in the early days of the Internet and I will die of nostalgia.