Which solution will meet these requirements MOST cost-effectively?
Create a disaster recovery (DR) plan that has a similar number of EC2 instances in the second Region. Configure data replication.
Create point-in-time Amazon Elastic Block Store (Amazon EBS) snapshots of the EC2 instances. Copy the snapshots to the second Region periodically.
Create a backup plan by using AWS Backup. Configure cross-Region backup to the second Region for the EC2 instances.
Deploy a similar number of EC2 instances in the second Region. Use AWS DataSync to transfer the data from the source Region to the second Region.
Explanations:
This approach involves creating a disaster recovery plan with a similar number of EC2 instances in the second Region, which is costly and inefficient. It doesn’t specify how to back up the data or manage backups centrally. Data replication is also more complex and expensive compared to other options.
While copying EBS snapshots to the second Region could work for backing up EC2 instances, it doesn’t offer a centralized management solution for backups, and periodic manual snapshot copying can become cumbersome to manage and less automated.
AWS Backup allows you to centrally manage backups, including cross-Region backup of EC2 instances. This is the most cost-effective and automated solution for managing backups while meeting the company’s needs.
Deploying EC2 instances in the second Region and using AWS DataSync for data transfer introduces unnecessary complexity and cost. This option doesn’t focus on backups but on replicating running EC2 instances and managing data transfer, which is more expensive and less efficient for backup purposes.
I rate that the answer is:
Create a backup plan by using AWS Backup. Configure cross-Region backup to the second Region for the EC2 instances.