Forum OpenACS Q&A: Re: Enabling database-backup
Check the backup script carefully. There are some typos.
Customize it for your service name/location. The script will (if I recall) dump your DB, tar your service directory (including DB dump), and copy it off to an external machine, naming the tar uniquely by service name and date. It performs a periodic full backup and daily incrementals (of course the DB is full daily dump).