@WJOHNSON-AD Adding more information to @JulieWang-MSFT response. No, Azure File Sync is for syncing files between an on-premises Windows Server or Cloud VM and an Azure file share, primarily for the purpose of caching the Azure file share on-premises for fast access.
There is already an thread discussion in Q&A Forum, please refer to the suggestion which can give some idea on your scenario: Best way to migrate my file server to azure then to SharePoint online
Azure File Server /SharePoint Document Library migration to Azure
If you have any question related to Azure Files happy to continue the conversation - I'll point you in the right direction if I can. Please feel free to reach out to me
Hope this helps!
Kindly let us know if the above helps or you need further assistance on this issue.
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