AWS Certified Solutions Architect – Associate (SAA-C02) — Question 134

A solutions architect must design a solution for a persistent database that is being migrated from on-premises to AWS. The database requires 64,000 IOPS according to the database administrator. If possible, the database administrator wants to use a single Amazon Elastic Block Store (Amazon EBS) volume to host the database instance.
Which solution effectively meets the database administrator's criteria?

Answer options

• A. Use an instance from the I3 I/O optimized family and leverage local ephemeral storage to achieve the IOPS requirement.
• B. Create a Nitro-based Amazon EC2 instance with an Amazon Elastic Block Store (Amazon EBS) Provisioned IOPS SSD (io1) volume attached. Configure the volume to have 64,000 IOPS.
• C. Create and map an Amazon Elastic File System (Amazon EFS) volume to the database instance and use the volume to achieve the required IOPS for the database.
• D. Provision two volumes and assign 32,000 IOPS to each. Create a logical volume at the operating system level that aggregates both volumes to achieve the IOPS requirements.

Correct answer: B

Explanation

Option B is correct because it allows the database administrator to configure a single Amazon EBS Provisioned IOPS SSD (io1) volume to meet the specific IOPS requirement of 64,000. Option A does not provide the necessary IOPS with just local storage, while Option C does not utilize EBS, which is required for this use case. Option D involves multiple volumes and is not aligned with the preference for a single volume solution.