A company uses Amazon FSx for NetApp ONTAP in its primary AWS Region for CIFS and NFS file shares that are accessed by applications running on Amazon EC2 instances. The company needs a disaster recovery (DR) solution in a secondary Region. The replicated data in the secondary Region must be accessible using the same protocols as in the primary Region. Which solution will meet these requirements with the LEAST operational overhead?

Using NetApp SnapMirror between two FSx for ONTAP instances in different Regions provides the least operational overhead. SnapMirror is a native NetApp technology integrated with FSx for ONTAP, designed for efficient, incremental replication of data volumes, including CIFS and NFS shares. This ensures data consistency and accessibility in the secondary Region using the same protocols. Incorrect options: Copying data to S3 via Lambda and replicating the S3 bucket would require custom scripting, introduce latency, and necessitate a separate process to restore data to an FSx for ONTAP instance for application access, increasing operational overhead. AWS Backup can back up FSx for ONTAP, but copying backups to another Region and then restoring them to a new FSx for ONTAP instance is a manual, multi-step process for DR, which is less efficient than continuous replication. Migrating to Amazon EFS would involve re-architecting the storage solution, which is a significant operational undertaking and not a direct DR solution for existing FSx for ONTAP workloads.