It's not quite *all* the porn on the internet, but there's a certain tracker that apparently lists 1.1PB. But that includes multiple resolutions so I suspect their actual unique title count is quite a bit lower.
That's EASILY archivable by a few people over at /r/datahoarder
I look like a chump with a flash drive compared to some of those guys. I think the biggest guy is close to 4PB now so he could easily cover it.