What should a solutions architect do to meet this requirement?
Configure AWS Storage Gateway in volume gateway mode. Mount the volume to each Windows instances.
Configure Amazon FSx for Windows File Server. Mount the Amazon FSx file system to each Windows instance.
Configure a file system by using Amazon Elastic File System (Amazon EFS). Mount the EFS file system to each Windows instance.
Configure an Amazon Elastic Block Store (Amazon EBS) volume with the required size. Attach each EC2 instance to the volume. Mount the file system within the volume to each Windows instance.
Explanations:
AWS Storage Gateway in volume gateway mode is designed for hybrid cloud storage solutions and is not suitable for providing a shared Windows file system across multiple EC2 instances. It is primarily used for on-premises storage integration with AWS, not for multi-instance file sharing.
Amazon FSx for Windows File Server provides a fully managed Windows file system that can be accessed by multiple EC2 Windows instances across multiple Availability Zones, meeting the requirement for a shared Windows file system.
Amazon EFS (Elastic File System) is a file system designed for Linux-based instances. While it can support multi-instance access, it is not natively optimized for Windows file sharing in the way Amazon FSx for Windows File Server is.
Amazon EBS volumes are block-level storage and can only be attached to a single EC2 instance at a time. They are not suitable for a shared file system across multiple EC2 instances. EBS would need to be attached to each instance separately, which does not satisfy the requirement.
In my opinion, the answer is:
Configure Amazon FSx for Windows File Server. Mount the Amazon FSx file system to each Windows instance.