Do Amazon EBS volumes persist independently from the running life of an Amazon EC2 instance?
No, they are dependent.
No, you cannot attach EBS volumes to an instance.
Yes, they do but only if they are detached from the instance.
Yes, they do, if the Delete on termination flag is unset.
Explanations:
Amazon EBS volumes can persist independently of an EC2 instance’s lifecycle if they are configured with the “Delete on termination” flag unset.
You can attach EBS volumes to an EC2 instance, as long as the instance supports it.
EBS volumes persist independently of the EC2 instance only if the “Delete on termination” flag is unset, regardless of whether they are detached or not.
EBS volumes persist after the termination of an EC2 instance if the “Delete on termination” flag is not set, ensuring their independent persistence.
In my experience, the answer is:
Yes, they do, if the Delete on termination flag is unset.