A DevOps Engineer is researching the least-expensive way to implement an image batch processing cluster in AWS. The application cannot run in Docker containers and must run on Amazon EC2. The batch job stores checkpoint data on a Network File System (NFS) and can tolerate interruptions. Configuring the cluster software from a bare EC2 Amazon Linux image takes 30 minutes. Which is the MOST cost-effective solution?
A) Use Amazon EFS for checkpoint data. To complete the job, use an EC2 Auto Scaling group and an On-Demand pricing model to provision EC2 instances temporarily.
B) Use ClusterFS on EC2 instances for checkpoint data. To run the batch job, configure EC2 instances manually. When the job completes, shut down the instances manually.
C) Use Amazon EFS for checkpoint data. Use EC2 Fleet to launch EC2 Spot Instances, and use user data to configure the EC2 Amazon Linux instance on startup.
D) Use Amazon EFS for checkpoint data. Use EC2 Fleet to launch EC2 Spot Instances. Create a standard cluster AMI and use the latest AMI when creating instances.
Correct Answer:
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