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Questions on Multi-AZ RDS
updated 3 years, 11 months ago
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In regards to the following:
An online events registration system is hosted in AWS and uses ECS to host its front-end tier and a Multi-AZ RDS for its database tier, which also has a standby replica. What are the events that will make Amazon RDS automatically perform a failover to the standby replica? (Select TWO.)
It might be my interpretation, but my understanding of this question was that the setup had 3 databases:
+ Multi-AZ
– Primary
– Standby
+ Read Replica-
This discussion was modified 3 years, 11 months ago by
victor-mendonca. Reason: Bullet points
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This discussion was modified 3 years, 11 months ago by
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Hi Victor,
In a Multi-AZ deployment, RDS automatically provisions and maintains a synchronous standby replica in a different AZ. The primary DB instance is synchronously replicated across AZs to a standby replica to provide data redundancy, eliminate I/O freezes, and minimize latency spikes during system backups.
A “standby replica” is not the same with “Read Replica”. For more information, please read the following AWS documentation:
https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Concepts.MultiAZ.html
Let us know if you need further assistance. The Tutorials Dojo team is dedicated to help you pass your AWS exam on your first try!
Regards,
Jon Bonso @ Tutorials Dojo
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Thanks for the reply Jon.
I think for me it was just the sentence ‘and a Multi-AZ RDS for its database tier, which also has a standby replica‘ that confused me. I should have read it again. But it makes sense now.
Cheers!
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No worries, Victor! The Tutorials Dojo team is always here to help!
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