SAP-C02 Question 199
Select 2A financial institution plans to deploy a mission-critical banking application on AWS. The application processes sensitive financial transactions and must meet stringent Recovery Time Objectives (RTOs) of 15 minutes and Recovery Point Objectives (RPOs) of 5 minutes. Which of the following architectural approaches should you implement to meet these requirements?
- A
Use Amazon RDS with Multi-AZ deployments and enable automated backups with a backup retention period of 1 day.
- B
Deploy the application on EC2 instances in an Auto Scaling group across multiple Availability Zones and use Amazon EFS for shared storage.
- C
Replicate the data asynchronously to an Amazon S3 bucket in a different region using Cross-Region Replication.
- D
Use Amazon Aurora Global Database with continuous backup and cross-region replication.
- E
Implement AWS Backup to take daily backups of the application and store them in Amazon S3.
Show answer and explanation
Correct answers: A, D
Explanation
To meet the stringent RTO of 15 minutes and RPO of 5 minutes for a mission-critical banking application, it is essential to design for both high availability and near-real-time data replication. Amazon RDS with Multi-AZ deployments provides automatic failover and meets RTO requirements, while Aurora Global Database provides cross-region replication with near-instantaneous recovery capabilities to meet both RTO and RPO requirements. Other options either fail to meet the RTO/RPO requirements or are unsuitable for transactional workloads.
- A. Correct.
Amazon RDS with Multi-AZ deployments provides high availability and automatic failover to a standby instance in a different Availability Zone, making it suitable for RTO requirements. Automated backups captured at scheduled intervals can help meet RPOs depending on the backup frequency.
- B. Incorrect.
Deploying the application on EC2 instances in an Auto Scaling group across multiple Availability Zones ensures high availability and fault tolerance for compute resources. Using Amazon EFS for shared storage provides durability and availability for the application data.
- C. Incorrect.
Cross-Region Replication for S3 is asynchronous and does not guarantee an RPO of 5 minutes. Additionally, it is not designed for transactional workloads, making it unsuitable for this use case.
- D. Correct.
Amazon Aurora Global Database supports fast recovery with cross-region replication that typically achieves an RPO of less than 1 second and RTO of less than 1 minute, making it ideal for meeting the stringent requirements of the scenario.
- E. Incorrect.
AWS Backup with daily backups would not meet the stringent RPO requirement of 5 minutes because backups are only taken once a day. This would result in potential data loss for a mission-critical application.