Backing up and packing Plone's database file (Data.fs)
Backing up the database
See “Backup Plone” in Plone’s documentation.
Packing the database
Packing a database throws away old object versions (generated by undo actions) from the database. To pack a database:
Go to Zope’s admin panel, under Control Panel → Database → [database name, e.g. main], choose how much undo info to keep, and click “pack”. Note: Data.fs.old will contain a copy of the database file before packing.
(There is a Zope product called PloneMaintenance that can do scheduled backup, although I have not tried it yet.)