AWS

Explain RDS Multi Availability Zone

Difficulty: unrated

Source: bregman-arie/devops-exercises by Arie Bregman

Answer

  • RDS multi AZ used mainly for disaster recovery purposes
  • There is an RDS master instance and in another AZ an RDS standby instance
  • The data is synced synchronously between them
  • The user, application is accessing one DNS name and where there is a failure with the master instance, the DNS name moves to the standby instance, so the failover done automatically