NodeChef performs continuous backups for your Postgres instance. In addition a hot backup of the entire database server is taken every 24 hours
Backups are kept on independent servers for up to 4 days before they are deleted. You can always archive your backups to an offsite location such as S3 which is supported.
To review information on your backups or even download them, navigate to the dashboard and click on PGDB Actions → Backups & Restore
Hot backups when downloaded will be delivered as a gzipped tar archive. This archive contains the files in your data directory on the Postgres server. Archived WAL segment files are however delivered as is without any compression.
On the Backups & Restore panel, click on Remote archiving. Enter your s3 credentials and bucket information. Once configured, all new backups will also be uploaded to S3 automatically.