You want to create an automated backup of your RDS database and store it in Amazon S3.

Certainly, I'd be happy to help you set up automated backups for your Amazon RDS database and store them in Amazon S3. Here are the steps to accomplish this:

1. Open the Amazon RDS console.

2. In the navigation pane, select "Databases".

3. To set up automated backups for a new database, click "Create Database". If you want to modify an existing database, select it and click "Modify".

4. Expand the "Additional configuration" section.

5. Under the "Backup" settings, make sure to:

   • Check the box for "Enable automated backups"
   • Set the "Backup retention period" to a value between 1 and 35 days. This determines how far back you can restore your database.
   • Choose a "Backup window" - this is when the daily snapshot will be taken. You can use the default values or set your own.

6. By default, automated backups are stored in Amazon S3 within the same region as your RDS instance.

7. To enable cross-region backup copying (which will store your backups in S3 in a different region):

   • Scroll down to the "Backup replication" section
   • Select "Enable replication to another AWS Region"
   • Choose the destination region for your backup copy

8. Save your changes.

Amazon RDS will now automatically create daily snapshots of your database and store them in S3. It will also back up transaction logs every five minutes, allowing for point-in-time recovery (PITR) to within the last five minutes in most cases.

Remember, these automated backups are separate from manual snapshots, which you can create at any time and keep until you explicitly delete them.

By following these steps, you'll have set up a robust automated backup system for your RDS database, with backups stored safely in Amazon S3.
Sources
Community | Protect Your Data in Amazon RDS Against Disaster or Accidental Deletion
Community | Protect Your Data in Amazon RDS Against Disaster or Accidental Deletion
Backup and recovery for Amazon RDS - AWS Prescriptive Guidance