[Zope] ZODB on the file system

Hello, I'm sure this question has been asked before in one form or another, but I have not found a reply that completely answers my question. So here we go again. We're trying to convince our computer department to use zope, however the fact that Zope stores all the files in a single datafile which isn't accessable through ordinary file management functions (and therefore eliminates incremental backups) make them hesitated. Is there any way to run Zope completely on the file system (also when running ZEO)? I've tried LocalFS but it doesn't seem to work with Plone and Zope 2.7 (and in addition it seems to be a bit insecure). How about ZFS? APE? Thanks, -Petter-