Support multiple SAL engines, easy to scale, backup and secure.

Encryption

You can turn on encryption at-rest for all RDS engines

It will also encrypt the automated backups, snapshots and read replicas

<aside> 💡 You may not be able to turn encryption on for older versions of some engines

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Backups

There are two solutions:

• Automated Backups
  • Choose a Retention Period between 1 and 35 days
  • Stores transaction logs throughout the day
  • Enabled by default
  • Data is stored inside Simple Storage Service — S3
  • No additional charge for backup storage
  • You define your backup window
  • Storage I/O may be suspended during backup
• Manual Snapshots
  • Taken manually by the user
  • Backups persist even if you delete the original RDS instance

Restoring Backups

When recovering, AWS will take the most recent daily backup, and apply transaction log data relevant to that day. This allows point-in-time recovery down to a second inside the retention period.

Backup data is never restored overtop of an existing instance.

When you restore, it creates a new instance with the backed-up data.

Multi-AZ

Ensures database remains available if another AZ becomes unavailable.

It makes an exact copy of your database in another AZ. AWS automatically synchronizes changes in the database over the standby copy.

Automatic Failover protection, if one AZ goes down, failover will occur and the standby slave will be promoted to master.

Read Replicas