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Question 975

A company implements a containerized application by using Amazon Elastic Container Service (Amazon ECS) and Amazon API Gateway. The application data is stored in Amazon Aurora databases and Amazon DynamoDB databases. The company automates infrastructure provisioning by using AWS CloudFormation. The company automates application deployment by using AWS CodePipeline.

A solutions architect needs to implement a disaster recovery (DR) strategy that meets an RPO of 2 hours and an RTO of 4 hours.

Which solution will meet these requirements MOST cost-effectively?

Set up an Aurora global database and DynamoDB global tables to replicate the databases to a secondary AWS Region. In the primary Region and in the secondary Region, configure an API Gateway API with a Regional endpoint. Implement Amazon CloudFront with origin failover to route traffic to the secondary Region during a DR scenario.

Use AWS Database Migration Service (AWS DMS), Amazon EventBridge (Amazon CloudWatch Events), and AWS Lambda to replicate the Aurora databases to a secondary AWS Region. Use DynamoDB Streams, EventBridge (CloudWatch Events), and Lambda to replicate the DynamoDB databases to the secondary Region. In the primary Region and in the secondary Region, configure an API Gateway API with a Regional endpoint. Implement Amazon Route 53 failover routing to switch traffic from the primary Region to the secondary Region.

Use AWS Backup to create backups of the Aurora databases and the DynamoDB databases in a secondary AWS Region. In the primary Region and in the secondary Region, configure an API Gateway API with a Regional endpoint. Implement Amazon Route 53 failover routing to switch traffic from the primary Region to the secondary Region.

Set up an Aurora global database and DynamoDB global tables to replicate the databases to a secondary AWS Region. In the primary Region and in the secondary Region, configure an API Gateway API with a Regional endpoint. Implement Amazon Route 53 failover routing to switch traffic from the primary Region to the secondary Region.

Correct Answer: C

To meet the disaster recovery requirements of an RPO of 2 hours and an RTO of 4 hours in the most cost-effective way, using AWS Backup to create backups of the Aurora and DynamoDB databases to a secondary AWS Region is both practical and cost-effective. With AWS Backup, backups can be automated, and it supports cross-region backup, ensuring data is replicated in the secondary region. In case of a disaster, the API Gateway with regional endpoints and Route 53 failover routing can be configured to switch traffic to the secondary region. This approach avoids the higher costs associated with maintaining live infrastructures in both regions.

Discussion

ggrodskiy

Correct C. https://docs.aws.amazon.com/aws-backup/latest/devguide/cross-region-backup.html

pvrhereOption: C

C is going to be cost effective, right? Also, cloudformation to deploy infrastructure is already in place.

zozza2023Option: C

C and D are crorect solution C is the answer as it is cost less https://aws.amazon.com/blogs/database/cost-effective-disaster-recovery-for-amazon-aurora-databases-using-aws-backup/

rbm2023

although they are correct, option D is not the most cost effective, it will require you to have live enviroment in both regions which is going to cost you, a lot more than just keep backups and the recovering considering the RTO and RPO in the scenario.

devilman222Option: C

Why is B marked as the correct solution? You wouldn't use DMS.

Jesuisleon

I really suspect you can use aws backup to copy database files from one region to another region under RPO 2 hrs.