[Zope] ZODB without undo functionality

Hello list, I use the ZODB seperately from Zope. The Undo-functionlity of the FileStorage makes a lot of sense for the usage by Data.fs. But it's just inconvenient for my application. I don't need the functionality, but because of the functionality more disk space is needed, I have to implement way to pack the database quite often an I suppose because of the big amount of data the application has performance losses. My question: Is there a way, to get the FileStorage to work without the undo functionality? I've tried other Storages (gdbmStorage and anydbmStorage) but could not get them to work. Could you recommend them or another Storage? Or should I stay by the FileStorage. Thanks in advance, Ulla.