Exam AWS Certified Solutions Architect - Associate SAA-C02 topic 1 question 813 discussion

Answer: B ** database to be up to date in the DR Region with the least possible latency --> means multi-AZ ** remaining infrastructure in the DR Region needs to run at reduced capacity and must be able to scale up if necessary --> warm standby

because it provides minimal latency and Multi-AZ solutions are not Multi-Regional ones

C:An Amazon Aurora global database with a warm standby deployment allows for automatic failover to a standby replica in a "#different region", which can help to minimize recovery time in the event of an outage. This approach is best suited for high-availability and critical workloads. An Amazon RDS Multi-AZ DB instance with a pilot light deployment uses a Multi-AZ (Availability Zone) deployment, which automatically fails over to a standby replica within the "#same region", this can also minimize recovery time, but it is designed for lower-availability and less critical workloads. In summary, if your workload is critical and high-availability is a must, an Amazon Aurora global database with a warm standby deployment would be the best option to achieve the lowest recovery time objective (RTO). But if your workload is less critical, an Amazon RDS Multi-AZ DB instance with a pilot light deployment could be a better option.

Why not A?

https://aws.amazon.com/blogs/architecture/disaster-recovery-dr-architecture-on-aws-part-iii-pilot-light-and-warm-standby/#:~:text=RTO%20for%20these,can%20handle%20requests It's definitely B, why would anyone choose A? stop misleading

It's A

https://docs.aws.amazon.com/whitepapers/latest/disaster-recovery-workloads-on-aws/disaster-recovery-options-in-the-cloud.html

it is B