Archiving the Internet
What is a petabyte ?
1,125,899,906,842,624 bytes (or 1024 terabytes)
But why would you want to know that?
Its actually the amount of data contained within the Internet Archive Wayback Engine (or at least it was ! ). If you want to see how a web site looked back in 1996 chances are that it is archived here.
In addtion to an archive of web pages, the Internet Archive has archives of Moving Images, Live Music, Audio, Texts and Software.