Native encryption-at-rest note

Author: RichardSmedley

modules/howtos/pages/encrypting-using-sdk.adoc

@@ -8,6 +8,19 @@
 
 For a high-level overview of this feature, see xref:concept-docs:encryption.adoc[].
 
+[TIP]
+.Native Encryption at Rest
+====
+Server 8.x (and new Capella Operational clusters) offer xref:server:learn:security/native-encryption-at-rest-overview.adoc[encryption at rest].
+It's a comprehensive way of encrypting all data in a non-ephemeral bucket,
+as well as logs, configuration data, and audit data.
+However, you may prefer the relative simplicity of key management in Field Level Encryption for use cases where there are a limited number of data to be encrypted.
+====
+
+
+
+
+
 [#package]
 == Packaging