Merge pull request #287404 from pjw711/pjw/clarify-ephemeral-storage-position

Clarify no support for ephemeral volumes

Author: prmerger-automator[bot]

articles/operator-nexus/concepts-storage.md

@@ -21,6 +21,9 @@ The storage appliance in an Azure Operator Nexus instance is represented as an A
 
 The Azure Operator Nexus software Kubernetes stack offers two types of storage. Operators select them through the Kubernetes StorageClass mechanism.
 
+> [!IMPORTANT]
+> Azure Operator Nexus does not support ephemeral volumes. Nexus recommends that the persistent volume storage mechanisms described in this document are used for all workload volumes as these provide the highest levels of performance and availability. All storage in Azure Operator Nexus is provided by the storage appliance. There is no support for storage provided by baremetal machine disks.
+
 ### StorageClass: nexus-volume
 
 The default storage mechanism, *nexus-volume*, is the preferred choice for most users. It provides the highest levels of performance and availability. However, volumes can't be simultaneously shared across multiple worker nodes. Operators can access and manage these volumes by using the Azure API and portal, through the volume resource.