The development team is working on a new application for which they will be launching an EC2 Instance. To decrease time in launching the EC2 instance, they want you to pre-warm the instance & keep it ready for launching with all required patches & software. Which of the following can be done to meet this requirement?

Answer options:

A.Launch the Amazon EC2 instance within an Auto-Scaling group and enable Hibernate on the instance in the Auto-Scaling group.
B.Launch the Amazon EC2 instance with an instance root volume and enable Hibernate.
C.Launch the Amazon EC2 instance with an Amazon EBS root volume and enable Hibernate.
D.Launch the Amazon EC2 instance within an Auto-Scaling group and enable Hibernate only on the EC2 instance that needs to be hibernated.

Correct Answer – C
To pre-warm EC2 instance, EC2 Hibernate can be used. The instance needs to be launched with an Amazon EBS root volume. Besides, you cannot hibernate an instance in an Auto Scaling group or used by Amazon ECS.
Options A & D are incorrect as EC2 hibernate is not supported if the EC2 instance is in an Auto-Scaling group.
Option B is incorrect as EC2 hibernate is not supported on Instance store volume. An EBS root volume is required.
For more information on hibernating EC2 instances, refer to the following URL:
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/Hibernate.html