- You can now enable SMB3 Protocol Encryption on Azure NetApp Files SMB and dual-protocol volumes. This feature enables encryption for in-flight SMB3 data, using the [AES-CCM algorithm on SMB 3.0, and the AES-GCM algorithm on SMB 3.1.1](/windows-server/storage/file-server/file-server-smb-overview#features-added-in-smb-311-with-windows-server-2016-and-windows-10-version-1607) connections. SMB clients not using SMB3 encryption can't access this volume. Data at rest is encrypted regardless of this setting. SMB encryption further enhances security. However, it might impact the client (CPU overhead for encrypting and decrypting messages). It might also impact storage resource utilization (reductions in throughput). You should test the encryption performance impact against your applications before deploying workloads into production.
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