Daily backup solution in OpenERP v7

Our customers use OpenERP (v.7) the database used by OpenERP is served by Postgres. within OpenERP is a function to create/ and restore a backup. However this needs to be done by manually clicking this option. We however want to have a robust backup and restore function that is automated, and are looking for someone that can provide this functionality. We believe however that it is probably best use the backup/ restore functionality from postgres as a base, instead of the function from within the application. requirements are: - automated daily backup - configurable storage location for the backups (cloud, or server in different network) - must be possible to automate backups for all our customers and all their databases - backup and restore must be easy, reliable and proven to work