Q2 — AWS SAA-C03 Ch.5

Question 2 of 65 | ← Chapter 5

Q302. A company is running a multi-tier ecommerce web application in the AWS Cloud The application runs on Amazon Ec2instances with an Amazon RDS for MySQL Multi-AZ DB instance. Amazon RDS is configured with the latest generation DB instance with 2,000 GB of storage in a General Purpose SSD (gp3) Amazon Elastic Block Store (Amazon EBS) volume. The database performance affects the application during periods of high demand.A database administrator analyzes the logs in Amazon CloudWatch Logs and discovers that the application performance always degrades when the number of read and write IOPS is higher than 20000. What should a solutions architect do to improve the application performance?

• A. Replace the volume with a magnetic volume
• B. Increase the number of IOPS on the gp3 volume
• C. Replace the volume with a Provisioned IOPS SSD (io2) volume ✓
• D. Replace the 2,000 GB gp3 volume with two 1,000 GB gp3 volumes.

Correct Answer: C. Replace the volume with a Provisioned IOPS SSD (io2) volume

Explanation

解析:https://aws.amazon.com/ebs/features/Amazon EBS provides a range of options that allow you to optimize storage performance and cost for your workload. These options are divided into two major categories: SSD-backed storage for transactional workloads, such as databases and boot volumes (performance depends primarily on IOPS), and HDD- backed storage for throughput intensive workloads, such as MapReduce and log processing (performance depends primarily on MB/s).