Deploy an AWS Transfer Family server with an internet-facing VPC endpoint, assigning an Elastic IP to each subnet. Configure the server to store files in an Amazon EFS system spanning multiple Availability Zones. Update the downstream applications to mount the EFS endpoint in place of the existing NFS share.

Set up an AWS Transfer Family server with a publicly accessible endpoint. Configure it to store files in an Amazon EFS system across multiple Availability Zones. Adjust the downstream applications to mount the EFS endpoint instead of the current NFS share.

Migrate the existing Linux VM to an Amazon EC2 instance using AWS Application Migration Service, and assign it an Elastic IP. Attach an Amazon EFS system to the EC2 instance and configure the SFTP server to use the EFS for file storage. Modify the downstream applications to mount the EFS endpoint in lieu of the NFS share.

Migrate the existing Linux VM to an AWS Transfer Family server using AWS Application Migration Service, and configure it with a publicly accessible endpoint. Set it up to store files in an Amazon FSx for Lustre system deployed across multiple Availability Zones. Update the downstream applications to mount the FSx for Lustre endpoint instead of the NFS share.