AWS Certified SysOps Administrator – Associate — Question 289

A company has users that deploy Amazon EC2 instances that have more disk performance capacity than is required. A SysOps administrator needs to review all Amazon Elastic Block Store (Amazon EBS) volumes that are associated with the instances and create cost optimization recommendations based on IOPS and throughput.

What should the SysOps administrator do to meet these requirements in the MOST operationally efficient way?

Answer options

• A. Use the monitoring graphs in the EC2 console to view metrics for EBS volumes. Review the consumed space against the provisioned space on each volume. Identify any volumes that have low utilization.
• B. Stop the EC2 instances from the EC2 console. Change the EC2 instance type for Amazon EBS-optimized. Start the EC2 instances.
• C. Opt in to AWS Compute Optimizer. Allow sufficient time for metrics to be gathered. Review the Compute Optimizer findings for EBS volumes.
• D. Install the fio tool onto the EC2 instances and create a .cfg file to approximate the required workloads. Use the benchmark results to gauge whether the provisioned EBS volumes are of the most appropriate type.

Correct answer: C

Explanation

AWS Compute Optimizer is the most operationally efficient tool for this task because it automatically analyzes the configuration and utilization metrics of Amazon EBS volumes to provide cost and performance optimization recommendations. Manual approaches like checking EC2 monitoring graphs or running synthetic benchmarks with fio require significantly more operational overhead and do not automatically generate recommendations. Modifying the instance type to be EBS-optimized does not address the cost optimization analysis of the attached storage volumes.