RS: Cannot mix RAM-only and flash clusters in Active-Active config (#…

…3181)

* DOC-3268 Added note - cannot mix RAM-only and flash clusters in Active-Active config

* Wording

* Update content/rs/databases/active-active/planning.md

Co-authored-by: Kaitlyn Michael <76962844+kaitlynmichael@users.noreply.github.com>

* DOC-3268 Feedback updates - wording

---------

Co-authored-by: Kaitlyn Michael <76962844+kaitlynmichael@users.noreply.github.com>

content/rs/databases/active-active/create.md

@@ -91,6 +91,10 @@ Every instance of an Active-Active database can receive write operations, and al
 
         {{<image filename="images/rs/screenshots/databases/active-active-databases/create-db-add-participating-clusters.png" alt="Add cluster panel.">}}{{</image>}}
 
+        {{<note>}}
+You cannot add RAM-only clusters and [flash-enabled clusters]({{<relref "/rs/databases/auto-tiering">}}) to the same Active-Active configuration.
+        {{</note>}}
+
     1. Click **Join cluster** to add the cluster to the list of participating clusters. 
 
 1. Enter a **Database name**.

content/rs/databases/active-active/manage.md

@@ -40,6 +40,10 @@ After you add new participating clusters to an existing Active-Active database,
 the new database instance can accept connections and read operations.
 The new instance does not accept write operations until it is in the syncing state.
 
+{{<note>}}
+You cannot add RAM-only clusters and [flash-enabled clusters]({{<relref "/rs/databases/auto-tiering">}}) to the same Active-Active configuration.
+{{</note>}}
+
 To add a new participating cluster to an existing Active-Active configuration using the Cluster Manager UI:
 
 1. Select the Active-Active database from the **Databases** list and go to its **Configuration** screen.

content/rs/databases/active-active/planning.md

@@ -21,7 +21,11 @@ See [Active-Active Redis]({{<relref "/rs/databases/active-active/">}}) for more
 
 ## Participating clusters
 
-For Active-Active databases, you need to [set up your participating clusters]({{<relref "/rs/clusters/new-cluster-setup.md">}}). At least two participating clusters. If your database requires more than ten participating clusters, contact Redis support. You can [add or remove participating clusters]({{<relref "/rs/databases/active-active/manage#participating-clusters/">}}) after database creation.
+You need at least [two participating clusters]({{<relref "/rs/clusters/new-cluster-setup">}}) for an Active-Active database. If your database requires more than ten participating clusters, contact Redis support. You can [add or remove participating clusters]({{<relref "/rs/databases/active-active/manage#participating-clusters/">}}) after database creation.
+
+{{<note>}}
+You cannot add RAM-only clusters and [flash-enabled clusters]({{<relref "/rs/databases/auto-tiering">}}) to the same Active-Active configuration.
+{{</note>}}
 
 Changes made from the admin console to an Active-Active database configuration only apply to the cluster you are editing. For global configuration changes across all clusters, use the `crdb-cli` command-line utility.