This ZopeProduct is a folder-ish object that restricts the total number of objects, their total size and their individual maximum size. QuotaFolder takes subfolders (recursively) into account, so it should not be possible to escape the quota restrictions.
Zope.org page: http://www.zope.org/Members/ivo/QuotaFolder
Announcement: http://mail.zope.org/pipermail/zope/2002-March/111654.html
In use at FreeZope?