A company is migrating an on-premises data center to the AWS Cloud.

Amazon FSx for Windows File Server supports Multi-AZ deployment for higher availability and automatic failover across Availability Zones. Because the existing file system was created as a Single-AZ deployment, the practical migration path is to create a new Multi-AZ FSx for Windows File Server file system and migrate the data. AWS DataSync is the appropriate managed service for transferring file data between file systems, including SMB-based storage. AWS Transfer Family is for managed file transfer protocols such as SFTP, FTPS, and FTP, not for replicating an FSx Windows file system for migration. AWS DMS is for database migration, not file-system migration. Simply shutting down the existing file system does not convert the deployment type in place.