SOA-C02 Question 327
Select 3A SysOps Administrator is managing an application hosted on an Amazon EC2 instance with Amazon Elastic Block Store (EBS) volumes attached. The application is experiencing higher latency than usual. Upon reviewing Amazon CloudWatch metrics, the administrator identifies an increase in the 'VolumeQueueLength' and 'VolumeReadOps' metrics. What actions should the administrator take to improve the performance of the EBS volumes?
- A
Upgrade the EBS volumes to a higher performance type, such as gp3 or io2.
- B
Ensure the EC2 instance is optimized for EBS by using an EBS-optimized instance type.
- C
Increase the Provisioned IOPS (PIOPS) for the volume if it is using an io1 or io2 volume type.
- D
Resize the EBS volume to increase capacity using Elastic Volumes.
- E
Schedule snapshots of the EBS volume to reduce latency during peak traffic.
Show answer and explanation
Correct answers: A, B, C
Explanation
The increase in 'VolumeQueueLength' and 'VolumeReadOps' indicates that the EBS volume is experiencing higher demand than it can handle efficiently. To address this, the administrator can upgrade to a higher performance EBS volume type, use an EBS-optimized instance type to ensure dedicated bandwidth for EBS operations, or increase the Provisioned IOPS for volumes that support this feature. These steps directly address the performance inefficiencies observed in the metrics.
- A. Correct.
Upgrading the EBS volume to a higher performance type (e.g., gp3 or io2) can reduce latency and improve throughput. This is especially effective for workloads requiring high IOPS or throughput.
- B. Correct.
Using an EBS-optimized EC2 instance ensures dedicated network bandwidth for EBS operations, reducing latency and improving performance.
- C. Correct.
Increasing the Provisioned IOPS (PIOPS) for io1 or io2 volumes can improve the volume's performance by providing higher IOPS and throughput for read and write operations.
- D. Incorrect.
Resizing the EBS volume increases storage capacity but does not directly enhance performance metrics like IOPS or latency. This option is irrelevant to the described issue.
- E. Incorrect.
Taking snapshots of the EBS volume is primarily a backup strategy and does not help with reducing latency or improving performance during peak traffic.