diff --git a/deployment/cinder/cinder-backend-dellemc-vmax-iscsi-puppet.yaml b/deployment/cinder/cinder-backend-dellemc-vmax-iscsi-puppet.yaml
index 109513ec7b..b44ec4d311 100644
--- a/deployment/cinder/cinder-backend-dellemc-vmax-iscsi-puppet.yaml
+++ b/deployment/cinder/cinder-backend-dellemc-vmax-iscsi-puppet.yaml
@@ -15,7 +15,9 @@ heat_template_version: rocky
 
 description: >
   Openstack Cinder Dell EMC VMAX iscsi backend
-
+  Please note, this template is not supported anymore.
+  Use Cinder Dell EMC PowerMax backend template defined in
+  cinder-backend-dellemc-powermax.yaml.
 parameters:
   CinderEnableDellEMCVMAXISCSIBackend:
     type: boolean
@@ -58,6 +60,16 @@ parameters:
     description: Mapping of service endpoint -> protocol. Typically set
                  via parameter_defaults in the resource registry.
 
+parameter_groups:
+- label: deprecated
+  description: |
+   The following parameters are deprecated and will be removed.
+  parameters:
+  - CinderEnableDellEMCVMAXISCSIBackend
+  - CinderDellEMCVMAXISCSIBackendName
+  - CinderDellEMCVMAXISCSIAvailabilityZone
+  - CinderDellEMCVMAXISCSIConfigFile
+
 outputs:
   role_data:
     description: Role data for the Cinder Dell EMC VMAX iscsi backend.
diff --git a/environments/cinder-dellemc-vmax-iscsi-config.yaml b/environments/cinder-dellemc-vmax-iscsi-config.yaml
index 624671c0a5..9f6debcd4d 100644
--- a/environments/cinder-dellemc-vmax-iscsi-config.yaml
+++ b/environments/cinder-dellemc-vmax-iscsi-config.yaml
@@ -1,5 +1,8 @@
 # A Heat environment file which can be used to enable a
 # Cinder Dell EMC VMAX backend, configured via puppet
+# Please note, this template is not supported anymore.
+# Use Cinder Dell EMC Powermax backend template defined in
+# cinder-backend-dellemc-powermax.yaml.
 resource_registry:
   OS::TripleO::Services::CinderBackendDellEMCVMAXISCSI: ../deployment/cinder/cinder-backend-dellemc-vmax-iscsi-puppet.yaml
 
diff --git a/releasenotes/notes/vmx-deprecate-driver-e428e372280c44e6.yaml b/releasenotes/notes/vmx-deprecate-driver-e428e372280c44e6.yaml
new file mode 100644
index 0000000000..9af2b88101
--- /dev/null
+++ b/releasenotes/notes/vmx-deprecate-driver-e428e372280c44e6.yaml
@@ -0,0 +1,5 @@
+---
+deprecations:
+  - Resource OS::TripleO::Services::CinderBackendDellEMCVMAXISCSI
+    is no longer supported. Use the new resource
+    OS::TripleO::Services::CinderBackendDellEMCPowermax.