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For AWS Elastic Disaster Recovery (AWS DRS) pricing, the correct approach is Pricing type 2, which involves two main components:
A) Replication costs:
- AWS DRS charges an hourly fee per replicating server ($0.028 per server per hour)
- EBS volumes (staging disks) for each source disk being replicated
B) Resources used during drill or recovery:
- EC2 instances when you launch test or recovery instances
- EBS volumes attached to those instances
For your specific case with 2 servers and 5 EBS volumes, you would pay for:
- AWS DRS service fee for 2 servers
- EBS storage costs for 5 staging disks (equal in size to your source volumes)
- When you perform drills or actual recovery, you'll also pay for the EC2 instances and their attached EBS volumes during the time they're running
The AWS Pricing Calculator can help you estimate these costs accurately. Note that the calculator provides workload estimates free of charge, with bill estimates offering five free calculations per month (additional estimates cost $2 each).
Sources
Disaster Recovery Pricing | AWS Elastic Disaster Recovery | Amazon Web Services
Generating estimates with Pricing Calculator - AWS Cost Management
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