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Adding to above response, when transferring data within the Azure cloud (from Azure File Share to Azure Blob Container), there is no additional charge for the data transfer itself. Since it’s within the same Azure region, you won’t incur any egress or ingress fees but would incur a standard read/write operation cost.
Consider Azure Storage Mover, which is a relatively new, fully managed migration service that enables you to migrate your files and folders to Azure Storage while minimizing downtime for your workload which can be used for large size data transfer refer - https://learn.microsoft.com/en-us/azure/storage-mover/service-overview
With Storage Mover, you can migrate data between specific source-target pairs:
- NFS share on a NAS or server device within your network to an Azure blob container.
- SMB share to an Azure file share.
Remember to assess your specific requirements and choose the method that best aligns with your workload and budget
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