Question

A media company is migrating a 40 TB on-premises NFS file share to AWS. The dataset is actively used: on-premises applications must continue to read and write files during the multi-month migration window, and any changed files must be periodically synchronized to Amazon S3. Once the migration completes, the on-premises applications will be decommissioned and all access will move to AWS. The available site-to-site VPN provides roughly 500 Mbps of usable bandwidth. Which approach BEST meets these requirements with the least operational overhead?

Accepted Answer

Deploy AWS DataSync agent on-premises and create a scheduled task that performs incremental transfers from the NFS share to an S3 bucket, verifying and copying only changed files on each run.

Answer

Order an AWS Snowball Edge device, copy the full 40 TB dataset once, and ship it back to AWS for import into S3.

Answer

Deploy an AWS Storage Gateway in file gateway mode and repoint the on-premises applications to write through the gateway to S3 for the duration of the migration.

Answer

Use AWS Database Migration Service (DMS) with change data capture to continuously replicate file changes from the NFS share into S3.