Can I initiate a “forced failover” for my MySQL Multi-AZ DB Instance deployment?
Only in certain regions
Only in VPC
If your DB instance is a Multi-AZ deployment, you can force a failover from one availability zone to another
when you select the Reboot option. When you force a failover of your DB instance, Amazon RDS
automatically switches to a standby replica in another Availability Zone and updates the DNS record for the DB
instance to point to the standby DB instance. As a result, you will need to clean up and re-establish any existing
connections to your DB instance. Reboot with failover is beneficial when you want to simulate a failure of a DB
instance for testing, or restore operations to the original AZ after a failover occurs.