updated the suse nfs simple mount doc

Author: Anjan Banerjee

articles/sap/workloads/high-availability-guide-suse-nfs-simple-mount.md

@@ -806,6 +806,12 @@ sudo crm_mon -r
 #      rsc_sap_NW1_ERS01  (ocf::heartbeat:SAPInstance):   Started sap-cl1
 ```
 
+> [!Note]
+> SAP ASCS/ERS cluster can be extended from 2-node to 3-node cluster with 3rd node as a spare node for failover of ASCS or ERS services.
+> - 3-node setup can only be used for SAP systems using SAP Enqueue Replication Server 2 (ENSA2).
+> - The cluster property ‘priority-fencing-delay’ should not be used in a 3-node cluster. 
+
+
 ## Prepare the SAP application server
 
 Some databases require you to execute the database installation on an application server. Prepare the application server VMs to be able to execute the database installation.