HANA on ANF - adjust parameters per SAP note 3024346

Author: rdeltcheva

articles/virtual-machines/workloads/sap/sap-hana-high-availability-netapp-files-suse.md

@@ -10,7 +10,7 @@ ms.service: virtual-machines-sap
 ms.topic: tutorial
 ms.tgt_pltfrm: vm-linux
 ms.workload: infrastructure-services
-ms.date: 03/24/2021
+ms.date: 05/10/2022
 ms.author: ampatel
 
 ---
@@ -367,18 +367,15 @@ For more information about the required ports for SAP HANA, read the chapter [Co
    10.3.0.5   hanadb2
    ```
 
-2.**[A]** Prepare the OS for running SAP HANA on Azure NetApp with NFS, as described in [NetApp SAP Applications on Microsoft Azure using Azure NetApp Files](https://www.netapp.com/pdf.html?item=/media/17152-tr4746pdf.pdf). Create configuration file */etc/sysctl.d/netapp-hana.conf* for the NetApp configuration settings.  
+2.**[A]** Prepare the OS for running SAP HANA on Azure NetApp with NFS, as described in SAP note [3024346 - Linux Kernel Settings for NetApp NFS](https://launchpad.support.sap.com/#/notes/3024346). Create configuration file */etc/sysctl.d/netapp-hana.conf* for the NetApp configuration settings.  
 
    ```
    vi /etc/sysctl.d/netapp-hana.conf
    # Add the following entries in the configuration file
    net.core.rmem_max = 16777216
    net.core.wmem_max = 16777216
-   net.core.rmem_default = 16777216
-   net.core.wmem_default = 16777216
-   net.core.optmem_max = 16777216
-   net.ipv4.tcp_rmem = 65536 16777216 16777216
-   net.ipv4.tcp_wmem = 65536 16777216 16777216
+   net.ipv4.tcp_rmem = 4096 131072 16777216
+   net.ipv4.tcp_wmem = 4096 16384 16777216
    net.core.netdev_max_backlog = 300000 
    net.ipv4.tcp_slow_start_after_idle=0 
    net.ipv4.tcp_no_metrics_save = 1
@@ -402,7 +399,7 @@ For more information about the required ports for SAP HANA, read the chapter [Co
 > [!TIP]
 > Avoid setting net.ipv4.ip_local_port_range and net.ipv4.ip_local_reserved_ports explicitly in the sysctl configuration files to allow SAP Host Agent to manage the port ranges. For more information, see SAP note [2382421](https://launchpad.support.sap.com/#/notes/2382421).  
 
-4.**[A]** Adjust the sunrpc settings, as recommended in the [NetApp SAP Applications on Microsoft Azure using Azure NetApp Files](https://www.netapp.com/pdf.html?item=/media/17152-tr4746pdf.pdf).  
+4.**[A]** Adjust the sunrpc settings, as recommended in SAP note [3024346 - Linux Kernel Settings for NetApp NFS](https://launchpad.support.sap.com/#/notes/3024346).  
 
    ```
    vi /etc/modprobe.d/sunrpc.conf

articles/virtual-machines/workloads/sap/sap-hana-high-availability-scale-out-hsr-suse.md

@@ -9,7 +9,7 @@ ms.service: virtual-machines-sap
 ms.topic: article
 ms.tgt_pltfrm: vm-windows
 ms.workload: infrastructure-services
-ms.date: 02/11/2022
+ms.date: 05/10/2022
 ms.author: radeltch
 
 ---
@@ -22,7 +22,6 @@ ms.author: radeltch
 
 [anf-azure-doc]:../../../azure-netapp-files/index.yml
 [anf-avail-matrix]:https://azure.microsoft.com/global-infrastructure/services/?products=netapp&regions=all 
-[anf-sap-applications-azure]:https://www.netapp.com/us/media/tr-4746.pdf
 
 [2205917]:https://launchpad.support.sap.com/#/notes/2205917
 [1944799]:https://launchpad.support.sap.com/#/notes/1944799
@@ -74,7 +73,6 @@ Before you begin, refer to the following SAP notes and papers:
 * [SUSE SAP HA Best Practice Guides][suse-ha-guide]: Contains all required information to set up NetWeaver High Availability and SAP HANA System Replication on-premises (to be used as a general baseline; they provide much more detailed information)
 * [SUSE High Availability Extension 12 SP5 Release Notes](https://www.suse.com/releasenotes/x86_64/SLE-HA/12-SP5/)
 * [Handling failed NFS share in SUSE HA cluster for HANA system replication](https://www.suse.com/support/kb/doc/?id=000019904)
-* [NetApp SAP Applications on Microsoft Azure using Azure NetApp Files][anf-sap-applications-azure]
 * [NFS v4.1 volumes on Azure NetApp Files for SAP HANA](./hana-vm-operations-netapp.md)
 
 ## Overview
@@ -267,18 +265,15 @@ Configure and prepare your OS by doing the following steps:
      10.23.1.201     hana-s2-db3-hsr
     ```
 
-3. **[A]** Prepare the OS for running SAP HANA on NetApp Systems with NFS, as described in [NetApp SAP Applications on Microsoft Azure using Azure NetApp Files][anf-sap-applications-azure]. Create configuration file */etc/sysctl.d/netapp-hana.conf* for the NetApp configuration settings.  
+3. **[A]** Prepare the OS for running SAP HANA on NetApp Systems with NFS, as described in SAP note [3024346 - Linux Kernel Settings for NetApp NFS](https://launchpad.support.sap.com/#/notes/3024346). Create configuration file */etc/sysctl.d/netapp-hana.conf* for the NetApp configuration settings.  
 
     <pre><code>
     vi /etc/sysctl.d/netapp-hana.conf
     # Add the following entries in the configuration file
     net.core.rmem_max = 16777216
     net.core.wmem_max = 16777216
-    net.core.rmem_default = 16777216
-    net.core.wmem_default = 16777216
-    net.core.optmem_max = 16777216
-    net.ipv4.tcp_rmem = 65536 16777216 16777216
-    net.ipv4.tcp_wmem = 65536 16777216 16777216
+    net.ipv4.tcp_rmem = 4096 131072 16777216
+    net.ipv4.tcp_wmem = 4096 16384 16777216
     net.core.netdev_max_backlog = 300000
     net.ipv4.tcp_slow_start_after_idle=0
     net.ipv4.tcp_no_metrics_save = 1
@@ -302,7 +297,7 @@ Configure and prepare your OS by doing the following steps:
     > [!TIP]
     > Avoid setting net.ipv4.ip_local_port_range and net.ipv4.ip_local_reserved_ports explicitly in the sysctl configuration files to allow SAP Host Agent to manage the port ranges. For more details see SAP note [2382421](https://launchpad.support.sap.com/#/notes/2382421).  
 
-4. **[A]** Adjust the sunrpc settings, as recommended in the [NetApp SAP Applications on Microsoft Azure using Azure NetApp Files][anf-sap-applications-azure].  
+4. **[A]** Adjust the sunrpc settings, as recommended in SAP note [3024346 - Linux Kernel Settings for NetApp NFS](https://launchpad.support.sap.com/#/notes/3024346).  
 
     <pre><code>
     vi /etc/modprobe.d/sunrpc.conf

articles/virtual-machines/workloads/sap/sap-hana-scale-out-standby-netapp-files-suse.md

@@ -9,7 +9,7 @@ ms.service: virtual-machines-sap
 ms.topic: article
 ms.tgt_pltfrm: vm-windows
 ms.workload: infrastructure-services
-ms.date: 02/11/2022
+ms.date: 05/10/2022
 ms.author: radeltch
 
 ---
@@ -22,7 +22,6 @@ ms.author: radeltch
 
 [anf-azure-doc]:/azure/azure-netapp-files/
 [anf-avail-matrix]:https://azure.microsoft.com/global-infrastructure/services/?products=netapp&regions=all 
-[anf-sap-applications-azure]:https://www.netapp.com/us/media/tr-4746.pdf
 
 [2205917]:https://launchpad.support.sap.com/#/notes/2205917
 [1944799]:https://launchpad.support.sap.com/#/notes/1944799
@@ -73,7 +72,6 @@ Before you begin, refer to the following SAP notes and papers:
 * [Azure Virtual Machines DBMS deployment for SAP on Linux][dbms-guide]
 * [SUSE SAP HA Best Practice Guides][suse-ha-guide]: Contains all required information to set up NetWeaver High Availability and SAP HANA System Replication on-premises (to be used as a general baseline; they provide much more detailed information)
 * [SUSE High Availability Extension 12 SP3 Release Notes][suse-ha-12sp3-relnotes]
-* [NetApp SAP Applications on Microsoft Azure using Azure NetApp Files][anf-sap-applications-azure]
 * [NFS v4.1 volumes on Azure NetApp Files for SAP HANA](./hana-vm-operations-netapp.md)
 
 ## Overview
@@ -320,18 +318,15 @@ Configure and prepare your OS by doing the following steps:
 
     Reboot the VM to activate the changes.  
 
-3. **[A]** Prepare the OS for running SAP HANA on NetApp Systems with NFS, as described in [NetApp SAP Applications on Microsoft Azure using Azure NetApp Files][anf-sap-applications-azure]. Create configuration file */etc/sysctl.d/netapp-hana.conf* for the NetApp configuration settings.  
+3. **[A]** Prepare the OS for running SAP HANA on NetApp Systems with NFS, as described in SAP note [3024346 - Linux Kernel Settings for NetApp NFS](https://launchpad.support.sap.com/#/notes/3024346). Create configuration file */etc/sysctl.d/netapp-hana.conf* for the NetApp configuration settings.  
 
     <pre><code>
     vi /etc/sysctl.d/netapp-hana.conf
     # Add the following entries in the configuration file
     net.core.rmem_max = 16777216
     net.core.wmem_max = 16777216
-    net.core.rmem_default = 16777216
-    net.core.wmem_default = 16777216
-    net.core.optmem_max = 16777216
-    net.ipv4.tcp_rmem = 65536 16777216 16777216
-    net.ipv4.tcp_wmem = 65536 16777216 16777216
+    net.ipv4.tcp_rmem = 4096 131072 16777216
+    net.ipv4.tcp_wmem = 4096 16384 16777216
     net.core.netdev_max_backlog = 300000
     net.ipv4.tcp_slow_start_after_idle=0
     net.ipv4.tcp_no_metrics_save = 1
@@ -356,7 +351,7 @@ Configure and prepare your OS by doing the following steps:
 > [!TIP]
 > Avoid setting net.ipv4.ip_local_port_range and net.ipv4.ip_local_reserved_ports explicitly in the sysctl configuration files to allow SAP Host Agent to manage the port ranges. For more details see SAP note [2382421](https://launchpad.support.sap.com/#/notes/2382421).  
 
-4. **[A]** Adjust the sunrpc settings, as recommended in the [NetApp SAP Applications on Microsoft Azure using Azure NetApp Files][anf-sap-applications-azure].  
+4. **[A]** Adjust the sunrpc settings, as recommended in SAP note [3024346 - Linux Kernel Settings for NetApp NFS](https://launchpad.support.sap.com/#/notes/3024346).  
 
     <pre><code>
     vi /etc/modprobe.d/sunrpc.conf
@@ -628,7 +623,7 @@ In this example for deploying SAP HANA in scale-out configuration with standby n
    - `async_write_submit_active` **on**
    - `async_write_submit_blocks` **all**
 
-   For more information, see [NetApp SAP Applications on Microsoft Azure using Azure NetApp Files][anf-sap-applications-azure]. 
+   For more information, see [I/O stack configuration for SAP HANA](https://docs.netapp.com/us-en/netapp-solutions-sap/bp/saphana_aff_nfs_i_o_stack_configuration_for_sap_hana.html).  
 
    Starting with SAP HANA 2.0 systems, you can set the parameters in `global.ini`. For more information, see SAP Note [1999930](https://launchpad.support.sap.com/#/notes/1999930).