[Zope] Session from RAM to FS

Hi. I would like to store a BIG files into a DB. Yes, I would like to do it via the session, because there are should be a pool of several files to upload. Well, all is fine except the Session is in the RAM. So when I allow users to store a lot of data in the RAM, server can go down. Is there some trick to store session data in the FS? I mean that session manager, which came with Zope 2.5.x out of the box? There was some link of some author somewhere in Zope.org (Chris McDonough?), but I've missed it and can't repair... -- Regards, Bogdan World domination. Fast. -- Linus Torvalds