RDS's backup retention period at AWS

Question

I set RDS instance's backup retention period is 7 days. I am assuming my database instance will be backuped at every 7 days. But now it is taken snapshots everyday.

How can I modify at my RDS instance so that it is taken snapshot only once in a week.

Answer 1

From Working With Backups:

Automated backups occur daily during the preferred backup window.

You can also set the backup retention period for these automated backups.

If you wish to have backups performed weekly, you will need to trigger manual snapshots, which are retained until you delete them. You can trigger manual snapshots via the management console, the AWS Command-Line Interface (CLI) or via an API call.

You could also configure Amazon CloudWatch Events to trigger an AWS Lambda function that makes the API call, thereby not requiring a server to trigger the backup.