You can back up the object storage repositories with full, incremental, or synthetic full backups.
You can back up the metadata of object repositories with full and incremental backups.
Note
You can back up the metadata at the folder level for Azure File Share.
Data You Cannot Back Up
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Files and folders without a name.
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Files and folders that contain a forward slash ("/") in their names.
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NFS file shares in an Azure premium storage account because NFS file shares do not support REST APIs.
To back up NFS file shares in an Azure premium storage account, see Azure Files.