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I have an AWS RDS instance deployed with Multi-AZ set as true.

As a disaster-management strategy in case the DB fails, is creating a read-replica in another AZ redundant?

If I create the read replica in another region (Outside the VPC), would that be redundant too?

somya
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  • I think read replica (to serve read-only traffic) is not enough, you will need standby replica or consider Multi-AZ DB cluster. – Franxi Hidro Sep 07 '22 at 13:45

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As a disaster-management strategy in case the DB fails, is creating a read-replica in another AZ redundant?

Yes. RDS read-replicas are only for scaling read queries and they do not offer automatic failover.

Paolo
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  • Thanks for your help Paolo. What would be an additional disaster-recovery strategy in this case? Is Multi-AZ deployment good enough for production data? – somya Sep 07 '22 at 14:21
  • @somya generally speaking yes, that should be sufficient. It kind of depends on how much/little redundancy you want to have – Paolo Sep 07 '22 at 16:58