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Answer: Implement AWS Elastic Disaster Recovery for the EC2 instances, establish a cross-Region read replica for the RDS database, deploy an ALB in a secondary AWS Region, set up an AWS Global Accelerator endpoint linked to the ALBs, and update the DNS records to direct traffic to the Global Accelerator endpoint.
The correct answer is A: Implement AWS Elastic Disaster Recovery for the EC2 instances, establish a cross-Region read replica for the RDS database, deploy an ALB in a secondary AWS Region, set up an AWS Global Accelerator endpoint linked to the ALBs, and update the DNS records to direct traffic to the Global Accelerator endpoint. AWS Elastic Disaster Recovery (DRS) supports both Windows and Linux environments and ensures that instances can be quickly recovered, meeting the required RPO and RTO objectives. Using a cross-Region read replica for the RDS instance ensures minimal data loss and quick failover capability, while AWS Global Accelerator helps in routing traffic to the optimal region, maintaining low latency post-failover.
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A company is operating a stateful web application on two Linux Amazon EC2 instances, which are managed by an Application Load Balancer (ALB) and are connected to an Amazon RDS for MySQL database. The DNS records for this application are hosted on Amazon Route 53. To enhance the application's resilience, a solutions architect is tasked with proposing a solution that adheres to specific recovery objectives without requiring substantial alterations to the current architecture. The objectives are: for the application tier, a Recovery Point Objective (RPO) of 2 minutes and a Recovery Time Objective (RTO) of 30 minutes; for the database tier, an RPO of 5 minutes and an RTO of 30 minutes. Additionally, the solution must maintain low latency following a failover. Which of the following solutions meets these requirements?
A
Implement AWS Elastic Disaster Recovery for the EC2 instances, establish a cross-Region read replica for the RDS database, deploy an ALB in a secondary AWS Region, set up an AWS Global Accelerator endpoint linked to the ALBs, and update the DNS records to direct traffic to the Global Accelerator endpoint.
B
Utilize Amazon Data Lifecycle Manager (DLM) for the EC2 instances to automate EBS volume snapshots, enable RDS automated backups, replicate backups to a second AWS Region, set up an ALB in the secondary Region, configure an AWS Global Accelerator endpoint associated with the ALBs, and modify the DNS records to point to the Global Accelerator endpoint.
C
Develop a backup plan in AWS Backup for the EC2 instances and RDS database, replicate backups to a second AWS Region, establish an ALB in the secondary Region, configure an Amazon CloudFront distribution in front of the ALB, and update the DNS records to direct traffic to CloudFront.
D
Employ Amazon Data Lifecycle Manager (DLM) for the EC2 instances to manage EBS volume snapshots, create a cross-Region read replica for the RDS database, set up an ALB in a secondary AWS Region, establish an AWS Global Accelerator endpoint connected to the ALBs, and update the DNS records to point to the Global Accelerator endpoint.