A MySQL database (1.75 TB) will be restored on an EC2 instance and requires up to 10,000 read IOPS. The database size is not expected to grow. Which EBS volume choice meets the performance requirement at the lowest cost?
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Correct answer: Provision a 2 TB General Purpose SSD (gp3) volume and set IOPS to 10,000..
Why this is the answer
A gp3 volume is the most cost-effective solution for this scenario. It allows you to provision IOPS and throughput independently of storage size, making it ideal for workloads requiring high IOPS without needing a massive storage volume to achieve them. A 2 TB gp3 volume can be configured for 10,000 IOPS, meeting the requirement. Cold HDD (sc1) and Throughput Optimized HDD (st1) volumes are designed for throughput-intensive, sequential workloads, not high random IOPS, and cannot achieve 10,000 IOPS. Provisioned IOPS SSD (io2) volumes offer higher performance and durability but are significantly more expensive than gp3 for the same IOPS, making gp3 the lowest-cost option here.
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