Elastic Compute Cloud
Your company has a set of EC2 Instances hosted in AWS. There is a mandate to prepare for disasters and come up with the necessary disaster recovery procedures. Which of the following would help in mitigating the effects of a disaster for the EC2 Instances?
A. Place an ELB in front of the EC2 Instances.
B. Use Auto Scaling to ensure the minimum number of instances are always running.
C. Use CloudFront in front of the EC2 Instances.
D. Use AMIs to recreate the EC2 Instances in another region.
D. Use AMIs to recreate the EC2 Instances in another region.
You can create an AMI from the EC2 Instances and then copy them to another region. In case of a disaster, an EC2 Instance can be created from the AMI.
Options A and B are good for fault tolerance, but cannot help completely in disaster recovery for the EC2 Instances.
Option C is in because we cannot determine if CloudFront would be helpful in this scenario or not without knowing what is hosted on the EC2 Instance.For disaster recovery, we have to make sure that we can launch instances in another region when required. Hence, options A,B and C are not feasible solutions.
For more information on AWS AMIs, please visit the following URL:
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/AMIs.html
