Hi @James Bourne ,
Azure File Sync transforms Windows Server into a quick cache of your Azure file share. You can use any protocol that's available on Windows Server to access your data locally, including SMB, NFS, and FTPS.
Note: A server endpoint represents a specific location on a registered server, such as a folder on a server volume. A server endpoint must be a path on a registered server (rather than a mounted share), and to use cloud tiering, the path must be on a non-system volume. Network attached storage (NAS) is not supported.
For more information, see:
https://learn.microsoft.com/en-us/azure/storage/files/storage-sync-files-deployment-guide?tabs=azure-portal
For migrating from NAS, refer to the documentation below:
Migrate from Network Attached Storage (NAS) to a hybrid cloud deployment with Azure File Sync
https://learn.microsoft.com/en-us/azure/storage/files/storage-files-migration-nas-hybrid
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Best regards,
Leon