AWS Certified Solutions Architect – Professional — Question 796

A company's site reliability engineer is performing a review of Amazon FSx for Windows File Server deployments within an account that the company acquired.
Company policy states that all Amazon FSx file systems must be configured to be highly available across Availability Zones.
During the review, the site reliability engineer discovers that one of the Amazon FSx file systems used a deployment type of Single-AZ 2. A solutions architect needs to minimize downtime while aligning this Amazon FSx file system with company policy.
What should the solutions architect do to meet these requirements?

Answer options

• A. Reconfigure the deployment type to Multi-AZ for this Amazon FSx file system.
• B. Create a new Amazon FSx file system with a deployment type of Multi-AZ. Use AWS DataSync to transfer data to the new Amazon FSx file system. Point users to the new location.
• C. Create a second Amazon FSx file system with a deployment type of Single-AZ 2. Use AWS DataSync to keep the data in sync. Switch users to the second Amazon FSx file system in the event of failure.
• D. Use the AWS Management Console to take a backup of the Amazon FSx file system. Create a new Amazon FSx file system with a deployment type of Multi- AZ. Restore the backup to the new Amazon FSx file system. Point users to the new location.

Correct answer: B

Explanation

You cannot directly convert an existing Single-AZ Amazon FSx for Windows File Server to a Multi-AZ deployment in-place, which makes Option A impossible. While restoring a backup to a new Multi-AZ file system is technically supported, using AWS DataSync as described in Option B minimizes downtime because it allows for online data replication while the source remains active, enabling a fast final cutover. Option C is incorrect because maintaining two separate Single-AZ file systems does not satisfy the corporate policy requiring a native Multi-AZ deployment.