A university research laboratory must migrate 30 TB from an on‑premises Windows file server to Amazon FSx for Windows File Server. The lab has a 1 Gbps network link that is shared by other departments. The lab wants the migration to maximize throughput but also be able to control how much bandwidth the service uses to limit impact on other departments. The migration must complete within 5 days. Which AWS solution meets these requirements?

AWS DataSync is the most suitable solution because it is designed for online data transfers between on-premises storage and AWS storage services, including Amazon FSx for Windows File Server. DataSync optimizes throughput over your existing network link and allows you to control bandwidth usage, which is crucial for minimizing impact on other departments. It can handle the 30 TB migration within the 5-day timeframe, even with a 1 Gbps link, by efficiently utilizing available bandwidth. AWS Snowcone is incorrect because it's an offline data transfer service, primarily for disconnected environments or when network transfer is infeasible, not ideal for an online migration with a dedicated network link. Amazon FSx File Gateway is incorrect as it provides on-premises access to FSx file shares, not a migration tool for existing data. AWS Transfer Family is incorrect because it is a fully managed service for transferring files over SFTP, FTPS, and FTP, not a general-purpose file migration service to FSx.