Add TOC and other changes recommended by Team

amish1971 · amish1971 · commit 9f9ee8bc84eb · 2023-01-13T12:53:39.000-08:00
diff --git a/articles/virtual-machines/workloads/sap/high-availability-guide-rhel-with-hana-ascs-ers-dialog-instance.md b/articles/virtual-machines/workloads/sap/high-availability-guide-rhel-with-hana-ascs-ers-dialog-instance.md
@@ -16,7 +16,7 @@ ms.author: ampatel
 
 # Deploy SAP ASCS/ERS with SAP HANA high availability VMs on Red Hat Enterprise Linux
 
-This article describes how to install and configure SAP HANA along with ASCS and ERS instances on the same high availability cluster, running on Red Hat Enterprise Linux (RHEL).
+This article describes how to install and configure SAP HANA along with ASCS/SCS and ERS instances on the same high availability cluster, running on Red Hat Enterprise Linux (RHEL).
 
 ## References
 
@@ -60,7 +60,7 @@ The example shown in this article to describe deployment uses following system i
 | ----------------------------------- | --------------- | ---------------- | ----------------------- |
 | SAP HANA DB                         | 03              | saphana          | 10.66.0.13 (62503)      |
 | ABAP SAP Central Services (ASCS)    | 00              | sapascs          | 10.66.0.20 (62000)      |
-| Enqueue Replication Server (ERS)    | 01              | sapers           | 10.66.0.30 (62001)      |
+| Enqueue Replication Server (ERS)    | 01              | sapers           | 10.66.0.30 (62101)      |
 | SAP HANA system identifier          | HN1             | ---              | ---                     |
 | SAP system identifier               | NW1             | ---              | ---                     |
 
@@ -72,19 +72,20 @@ The example shown in this article to describe deployment uses following system i
 
 ### Important consideration for the cost optimization solution
 
-* SAP Dialog Instances (PAS and AAS) (like **sapa02** and **sapa04**), can be installed on separate VMs. Install SAP ASCS and ERS with virtual hostnames. To learn more on how to assign virtual hostname to a VM, refer to the blog [Use SAP Virtual Host Names with Linux in Azure](https://techcommunity.microsoft.com/t5/running-sap-applications-on-the/use-sap-virtual-host-names-with-linux-in-azure/ba-p/3251593).
-* With HANA DB, ASCS/SCS and ERS deployment in the same cluster setup, the instance number of HANA DB, ASCS and ERS must be different.
-* Consider sizing your VM SKUs appropriately based on the sizing guidelines. You have to factor in the cluster behavior where multiple SAP instances (HANA DB, ASCS and ERS) may run on a single VM, when other VM in the cluster is unavailable.
+* SAP Dialog Instances (PAS and AAS) (like **sapa01** and **sapa02**), should be installed on separate VMs. Install SAP ASCS and ERS with virtual hostnames. To learn more on how to assign virtual hostname to a VM, refer to the blog [Use SAP Virtual Host Names with Linux in Azure](https://techcommunity.microsoft.com/t5/running-sap-applications-on-the/use-sap-virtual-host-names-with-linux-in-azure/ba-p/3251593).
+* With HANA DB, ASCS/SCS and ERS deployment in the same cluster setup, the instance number of HANA DB, ASCS/SCS and ERS must be different.
+* Consider sizing your VM SKUs appropriately based on the sizing guidelines. You have to factor in the cluster behavior where multiple SAP instances (HANA DB, ASCS/SCS and ERS) may run on a single VM, when other VM in the cluster is unavailable.
 * You can use different storage (for example, Azure NetApp Files or NFS on Azure Files) to install the SAP ASCS and ERS instances.
   > [!NOTE]
   >
   > For SAP J2EE systems, it's not supported to place `/usr/sap/<SID>/J<nr>` on NFS on Azure Files.
+  > DB files like /hana/data and /hana/log are not supported on NFS on Azure Files.
 * To install additional application servers on separate VMs, you can either use NFS shares or local managed disk for instance directory filesystem. If you're installing additional application servers for SAP J2EE system, `/usr/sap/<SID>/J<nr>` on NFS on Azure Files isn't supported.
 * Refer [NFS on Azure Files consideration](high-availability-guide-rhel-nfs-azure-files.md#important-considerations-for-nfs-on-azure-files-shares) and [Azure NetApp Files consideration](high-availability-guide-rhel-netapp-files.md#important-considerations), as same consideration applies for this setup as well.
 
 ## Pre-requisites
 
-The configuration described in this article is an addition to your already configured SAP HANA cluster setup. In this configuration, SAP ASCS and ERS will be installed on a virtual hostname and its instance directory is managed by the cluster.
+The configuration described in this article is an addition to your already configured SAP HANA cluster setup. In this configuration, SAP ASCS/SCS and ERS will be installed on a virtual hostname and its instance directory is managed by the cluster.
 
 Install HANA database, set up HSR and Pacemaker cluster by following the documentation [High availability of SAP HANA on Azure VMs on Red Hat Enterprise Linux](sap-hana-high-availability-rhel.md) or [High availability of SAP HANA Scale-up with Azure NetApp Files on Red Hat Enterprise Linux](sap-hana-high-availability-netapp-files-red-hat.md) depending on what storage option you're using.
 
@@ -122,11 +123,6 @@ Once you've Installed, configured and set-up the **HANA Cluster**, follow the st
    2. Load balancing rule for ERS
       1. Repeat the steps under “5.1” to create load balancing rule for ERS (for example, **ers-lb**).
 
-Based on your storage, follow the steps described in below guides to configure `SAPInstance` resource for SAP ASCS and SAP ERS instance in the cluster. 
-
-* NFS on Azure Files - [Azure VMs high availability for SAP NW on RHEL with NFS on Azure Files](high-availability-guide-rhel-nfs-azure-files.md)
-* Azure NetApp Files - [Azure VMs high availability for SAP NW on RHEL with Azure NetApp Files](high-availability-guide-rhel-netapp-files.md)
-
 > [!IMPORTANT]
 >
 > Floating IP is not supported on a NIC secondary IP configuration in load-balancing scenarios. For details see [Azure Load balancer Limitations](../../../load-balancer/load-balancer-multivip-overview.md#limitations). If you need additional IP address for the VM, deploy a second NIC.
@@ -139,8 +135,17 @@ Based on your storage, follow the steps described in below guides to configure `
 >
 > Do not enable TCP timestamps on Azure VMs placed behind Azure Load Balancer. Enabling TCP timestamps will cause the health probes to fail. Set parameter **net.ipv4.tcp_timestamps** to **0**. For details see [Load Balancer health probes](../../../load-balancer/load-balancer-custom-probe-overview.md).
 
-Follow the steps in [High availability for SAP NetWeaver on Azure VMs on Red Hat Enterprise Linux with NFS on Azure Files](high-availability-guide-rhel-nfs-azure-files.md) or [Azure Virtual Machines high availability for SAP NetWeaver on Red Hat Enterprise Linux with Azure NetApp Files for SAP applications](high-availability-guide-rhel-netapp-files.md) to install, configure and set-up SAP ASCS and ERS instance.  Use the above steps for the Load Balancer set-up for SAP ASCS and ERS.
+## SAP ASCS/SCS and ERS Setup
+
+Based on your storage, follow the steps described in below guides to configure `SAPInstance` resource for SAP ASCS/SCS and SAP ERS instance in the cluster.
+
+* NFS on Azure Files - [Azure VMs high availability for SAP NW on RHEL with NFS on Azure Files](high-availability-guide-rhel-nfs-azure-files#prepare-for-sap-netweaver-installation)
+* Azure NetApp Files - [Azure VMs high availability for SAP NW on RHEL with Azure NetApp Files](high-availability-guide-rhel-netapp-files.md#prepare-for-sap-netweaver-installation)
+
+Follow the steps in [High availability for SAP NetWeaver on Azure VMs on Red Hat Enterprise Linux with NFS on Azure Files](high-availability-guide-rhel-nfs-azure-files.md) or [Azure Virtual Machines high availability for SAP NetWeaver on Red Hat Enterprise Linux with Azure NetApp Files for SAP applications](high-availability-guide-rhel-netapp-files.md) to install, configure and set up SAP ASCS and ERS instance.  Use the above steps for the Load Balancer set-up for SAP ASCS and ERS.
 
 ## Test the cluster setup
 
-Thoroughly test your pacemaker cluster. [Execute the typical failover tests](high-availability-guide-rhel.md#test-the-cluster-setup).
+Thoroughly test your pacemaker cluster.
+* [Execute the typical Netweaver failover tests](high-availability-guide-rhel.md#test-the-cluster-setup).
+* [Execute the typical HANA DB Failover tests](sap-hana-high-availability-rhel#test-the-cluster-setup).
diff --git a/articles/virtual-machines/workloads/sap/toc.yml b/articles/virtual-machines/workloads/sap/toc.yml
@@ -220,6 +220,8 @@
     items:
     - name: Install PAS and AAS with SAP NetWeaver HA cluster - RHEL
       href: high-availability-guide-rhel-with-dialog-instance.md
+    - name: Install SAP ASCS/SCS and ERS with SAP HANA high in HA cluster - RHEL
+      href: high-availability-guide-rhel-with-hana-ascs-ers-dialog-instance.md 
 - name: Disaster Recovery (Azure VMs)
   items:
   - name: DR overview and infrastructure guidelines for SAP Workload
