Question

Your company runs an Amazon Elastic Compute Cloud (Amazon EC2) instance periodically to perform a batch processing job on a large and growing filesystem. At the end of the batch job, you shut down the Amazon EC2 instance to save money but need to persist the filesystem on the Amazon EC2 instance from the previous batch runs. What AWS Cloud service can you leverage to meet these requirements?

A. Amazon Elastic Block Store (Amazon EBS)
B. Amazon DynamoDB
C. Amazon Glacier
D. AWS CloudFormation

Answer 1

The AWS Cloud service that can be leveraged to persist the filesystem on the Amazon EC2 instance is Amazon Elastic Block Store (Amazon EBS).

Step-by-step explanation:

For this scenario, the AWS Cloud service that you can leverage to meet the requirements is Amazon Elastic Block Store (Amazon EBS).

Amazon EBS provides durable block-level storage that can be attached to an Amazon EC2 instance. When you shut down the instance, the data on the Amazon EBS volume remains preserved, allowing you to persist the filesystem from previous batch runs. This helps you save money by only paying for the storage even when the instance is not running.

By using Amazon EBS, you can easily detach the volume from one Amazon EC2 instance and attach it to another instance when you need to run a new batch job, ensuring the persistence of your filesystem.