SOA-C02 Question 328
Select 3You are a SysOps Administrator managing a set of Amazon EC2 instances with attached Amazon EBS volumes. After analyzing the CloudWatch metrics, you notice high I/O wait times and low throughput on one of your EBS volumes. To address this issue and improve performance efficiency, what actions should you take?
- A
Upgrade the EBS volume type to a higher-performance option, such as moving from gp2 to io2.
- B
Use Amazon EBS Provisioned IOPS (io2) and configure the volume with sufficient IOPS to handle the workload.
- C
Enable Elastic Volumes to automatically scale the size of the volume during high demand periods.
- D
Monitor the VolumeIdleTime CloudWatch metric to determine if the volume is underutilized.
- E
Ensure that the EC2 instance type supports the required network and EBS bandwidth for the upgraded volume.
Show answer and explanation
Correct answers: A, B, E
Explanation
To address performance issues like high I/O wait times and low throughput, you can upgrade the EBS volume type to a higher-performance option and use Provisioned IOPS to meet workload demands. Additionally, you must verify that the EC2 instance type supports the required EBS throughput and bandwidth for the upgraded volume. These steps ensure that the EBS volume and the EC2 instance work together efficiently to handle the workload.
- A. Correct.
Upgrading to a higher-performance EBS volume type, like io2, can significantly improve throughput and reduce latency, making it a valid solution for this issue.
- B. Correct.
Provisioned IOPS (io2) allows you to configure the volume with specific IOPS requirements to meet the demands of high-performance workloads, addressing the issue of high I/O wait times.
- C. Incorrect.
Elastic Volumes is used to dynamically change the size, type, or performance of a volume, but it does not automatically scale during high demand periods. This is not a valid option for this scenario.
- D. Incorrect.
The VolumeIdleTime metric indicates whether the volume is idle, not whether it is experiencing performance issues. This is irrelevant to resolving high I/O wait times and low throughput.
- E. Correct.
The EC2 instance must support the EBS bandwidth and network performance needed for the upgraded volume to ensure the performance improvement is fully realized.