A company is running a critical workload on an Amazon RDS DB instance. The company needs the DB instance to be highly available. The company requires a recovery time of less than 5 minutes.
Which solution will meet these requirements?
A.
Create a read replica of the DB instance.
B.
Use AWS CloudFormation to create a template of the DB instance.
C.
Take periodic snapshots of the DB instance. Store the snapshots in Amazon S3.
D.
Modify the DB instance to use a Multi-AZ deployment.
The correct solution isMulti-AZ deploymentbecause this is the Amazon RDS feature designed for high availability and fast failover. AWS prescriptive guidance shows Multi-AZ deployment as an in-Region DR option with an approximateRTO of 1–2 minutes, which is comfortably within the less-than-5-minute requirement. Read replicas are mainly for scaling reads, while snapshots and CloudFormation are not fast failover mechanisms. For a critical database workload that must remain highly available with minimal recovery time, Multi-AZ is the standard AWS-managed answer.
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