MySQL Database Setups

There are two different ways of setting up a redundant MySQL database on Amazon EC2.  In both cases, there will be a Master-DB and Slave-DB with replication for failover and recovery.  The core difference between each setup is how the backups are saved. 

• MySQL-S3 Setup - Backups of the database are saved directly to S3 as *.tar files.  ("MySQL Bootstrap" and "MySQL Additional" ServerTemplates)
• MySQL-EBS Setup - Backups of the database are saved as EBS snapshots to S3.  See Overview of MySQL-EBS Setups for more details.  There is only one ServerTemplate for the MySQL-EBS Setup, "MySQL EBS."