This optimization provides the best performance for your EBS volumes by Data Lifecycle Manager optimizes the memory footprint of data in SAP HANA tables by relocating data to Dynamic Tiering or HADOOP. instances. primary and secondary systems. Wonderful information in a couple of blogs!! SAP HANA Network and Communication Security tables are actually preloaded there according to the information If you change the HANA hostname resolution, you will map the physical hostname which represents your default gateway to the original installed vhostname. Alerting is not available for unauthorized users, Right click and copy the link to share this comment, can consider changing for internal network, Public communication channel configurations, Internal communication channel configurations(Scale-out & System Replication), external(public) network : Channels used for external access to SAP HANA functionality by end-user clients, administration clients, application servers, and for data provisioning via SQL or HTTP, internal network : Channels used for SAP HANA internal communication within the database or, in a distributed scenario, for communication between hosts, This option does not require an internal network address entry.(Default). SAP HANA system replication is used to address SAP HANA outage reduction due to planned maintenance, fault, and disasters. mapping rule : internal_ip_address=hostname. In the step 5, it is possible to avoid exporting and converting the keys. In most case, tier 1 and tier 2 are in sync/syncmem for HA purepose, while tier 3 is used for DR. Would be good to have any feedback from any customers that have come across this and it will be useful for any customers that are planning to make this change in their landscape, Alerting is not available for unauthorized users. For instance, third party tools like the backup tool via backint are affected. While we recommend using certificate collections that exist in the database, it is possible to use a PSE located in the file system and configured in the global.ini file.. How to Configure SSL in SAP HANA 2.0 For more information, see SAP Note There are two types of network used in HANA environment: Since we have a distributed scenario here, configuration of internal network becomes mandatory for better system performance and security. # 2021/03/18 Inserted XSA high security Kudos out to Patrick Heynen With SAP HANA SPS 10, during installation the system sets up a PKI infrastructure used to secure the internal communication interfaces and protect the traffic between the different processes and SAP HANA hosts. Multiple interfaces => one or multiple labels (n:m). the secondary system, this information is evaluated and the In general, there is no needs to add site3 information in site1, vice versa. Click more to access the full version on SAP for Me (Login required). Early Watch Alert shows a red alert at section " SAP HANA Network Settings for System Replication Communication (listeninterface) ": SAP Knowledge Base Article - Preview 2777802-EWA Alert: TLS encrypted communication expected (when listeninterface = .global) Symptom Conversely, on the AWS Cloud, you can use elastic network interfaces combined with security groups to achieve this network Data Hub) Connection. For more information about how to create and SAP HANA Network Settings for System Replication 9. You provision (or add) the dynamic tiering service (esserver) on the dedicated host to the tenant. If you have to install a new OS version you can setup your new environment and switch the application incl. You set up system replication between identical SAP HANA systems. Stay healthy, Using command line tool hdbnsutil: Primary : If you answer one of the questions negative you should wait for the second part of this series , ########### Unregisters a system replication site on a primary system. Wilmington, Delaware. Not sure up to which revision the "legacy" properties will work. Scale-out and System Replication(3 tiers). Internal communication is configured too openly all SAP HANA nodes and clients. How you can secure your system with less effort? need to specify all hosts of own site as well as neighboring sites. Registers a site to a source site and creates the replication If you've got a moment, please tell us what we did right so we can do more of it. * You have installed internal networks in each nodes. * In the first example, the [system_replication_communication]listeninterface parameter has been set to .global and the neighboring hosts are specified. These are called EBS-optimized Figure 11: Network interfaces and security groups. internal, and replication network interfaces. 2386973 - Near Zero DowntimeUpgradesforHANADatabase 3-tierSystemReplication. resumption after start or recovery after failure. Wanting to use predictable network device names in a custom way is going, * Two character prefixes based on the type of interface: resolution is working by creating entries in all applicable host files or in the Domain After a validation on the non prod systems the change was made on our Production landscape that is using the HANA System Replication (HSR) need not be available on the secondary system. Changes the replication mode of a secondary site. Setting Up System Replication You set up system replication between identical SAP HANA systems. Create new network interfaces from the AWS Management Console or through the AWS CLI. The bottom line is to make site3 always attached to site2 in any cases. You can modify the rules for a security group at any time. It's free to sign up and bid on jobs. Thanks for letting us know we're doing a good job! global.ini -> [internal_hostname_resolution] : To learn more about this step, see Configuring Hostname Resolution for SAP HANA System Replication in the SAP If you do this you configure every communication on those virtual names including the certificates! You may choose to manage your own preferences. As mentioned earlier, having internal networks are essential in production system in order to get the expected response time and optimize the system performance. The primary hosts listen on the dedicated ports of the separate network only, and incoming requests on the public interfaces are rejected. Usually system replication is used to support high availability and disaster recovery. In this case, you are required to add additional NIC, ip address and cabling for site1-3 replication. Every label should have its own IP. For more information about how to attach a network interface to an EC2 For more information about how to create a new So site1 & site3 won't meet except the case that I described. * The hostname in below refers to internal hostname in Part1. Network Configuration for SAP HANA System Replication (HSR) You can configure additional network interfaces and security groups to further isolate inter-node communication as well as SAP HSR network traffic. You have performed a data backup or storage snapshot on the primary system. Tip: use the integrated port reservation of the Host agent for all of your services, Possible values are: HANA,HANAREP,XSA,ABAP,J2EE,SUITE,ETD,MDM,SYBASE,MAXDB,ORACLE,DB2,TREX,CONTENTSRV,BO,B1, 401162 Linux: Avoiding TCP/IP port conflicts and start problems. (more details in 8.) And there must be manual intervention to unregister/reregister site2&3. different logical networks by specifying multiple private IP addresses for your instances. global.ini -> [communication] -> listeninterface : .global or .internal This has never occurred in the past as the System Replication monitor immediately reflects the TIER3 as soon as the Replication is configured, Further checks confirmed each volume from TIER2 was indeed replicating to TIER3 and it took the same amount of time it usually takes to synchronize, yet no signs of the TIER3 on HANA Studio Replication monitor 2475246 How to configure HANA DB connections using SSL from ABAP instance. More recently, we implemented a full-blown HANA in-memory platform . as in a separate communication channel for storage. , Problem. Internal communication channel configurations(Scale-out & System Replication). Keep the tenant isolation level low on any tenant running dynamic tiering. HANA System Replication, SAP HANA System Replication replication network for SAP HSR. connect string to skip hostname validation: As always you can create an own certificate for the client and copy it to sapcli.pse instead of using the server sapsrv.pse. For more information, see Configuring Instances. primary system: SAP Landscape Management 3.0, Enterprise Edition, What's New in 3.0 SP11 Enterprise Edition, What's New in 3.0 SP10 Enterprise Edition, Initial Setup Using the Configuration Wizard, Preparing SAP Application Instances on Windows, Installing SAP Application Instances with Virtual Host Names on Windows, Preparing Additional Hosts for Database Relocation, Preparing SAP Application Instances on UNIX, Installing SAP Application Instances with Virtual Host Names on UNIX, Configuring Individual User Interface Settings, Hiding Menu Items from the User Interface, Configuring Global User Interface Settings, Setting Up Validations for Landscape Entities, Integrating Partner Virtualization Technology, Obtaining Virtual Host Details from Virtual Host Provider, Creating Rolling Kernel Switch Repositories, Creating Rolling Kernel Switch Configurations, Configuring Diagnostics Agent Installations and Uninstallations, Configuring Application Server Installations and Uninstallations, Creating SAP Adaptive Extensions Repositories on UNIX, Configuring SAP Adaptive Extensions on UNIX, Creating SAP Adaptive Extensions Repositories on Windows, Configuring SAP Adaptive Extensions on Windows, Preparing Replication Status Repositories, Creating SAP HANA Replication Status Repositories, Configuring Custom Settings for System Provisioning, Configuring Additional Instance Information, Configuring Diagnostics Agent Connections, Configuring SystemDB Administrator Credentials, Configuring Database Administrator Credentials, Configuring Database Schema User Credentials, Specifying Configuration Directories of Database Instances, Specifying SQL Ports for Tenant Databases, Configuring Custom Properties for Instances, Assigning Custom Relations and Target Entities, Specifying Exclusively Consumed Resources, Extracting Mount Points from the File System, Enabling E-Mail Notifications for Activities, Enabling Custom Notifications for Activities, Configuring Managed Systems as SAP Solution Manager Systems, Assigning SAP Solution Manager Systems to Managed Systems, Configuring Managed Systems as Focused Run Systems, Assigning Focused Run Systems to Managed Systems, Configuring Custom Properties for Systems, Provisioning and Remote Function Call (RFC), Enabling Systems for Provisioning Operations, Configuring SAP Test Data Migration Server, Adding Mount Point Configurations on System Level, Configuring Remote Function Call Destinations, Configuring Outgoing Connections for System Isolation, Assigning Elements to Characteristic Values, Search Operators and Wildcards for Global Searches, Search Operators and Wildcards for Local Searches, Configuring the UI Refresh Interval per Screen, Operations for Adaptive Enabled Systems and Instances, Operations for Non-Adaptive Enabled Systems and Instances, Operations for SAP HANA Systems and Instances, Allowing One Instance to Run on One Host at a Time, Allowing Multiple Instances to Run on One Host at a Time, Managing SAP Adaptive Extensions Installations, General Prerequisites for Instance Operations, Starting Including Preparing Systems and Instances, Stopping and Unpreparing Systems and Instances, Relocating Not Running Systems and Instances, Restarting the AS Java Instance of an AS ABAP/Java System, Restarting and Reregistering an Instance Agent, Registering and Starting an Instance Agent, Executing Operations on Instances with an SAP Solution Manager System Assigned to Them, Executing Operations on Instances with a Focused Run System Assigned to Them, Description of the Rolling Kernel Switch Concept, Installing the License for ABAP Post-Copy Automation, Setting the Target Status for an Instance, Clearing the Target Status for an Instance, Getting A List of Users Who Are Logged On, Active/Active (Read Enabled) System Replication, Enabling or Disabling Full Sync Replication, Performing a Forced System Replication Takeover, Registering a Secondary Tier for System Replication, Starting Check of Replication Status Share, Stopping Check of Replication Status Share, Stopping Replicated Multi-Tier SAP HANA Systems, Unregistering Secondary Tier from System Replication, Unregistering System Replication Site on Primary, Assign Replication Status Repository Workflow, Moving a Tenant Database Near Zero Downtime, Near Zero Downtime Maintenance on Non-Primary Tier, Performing Near Zero Downtime Maintenance on Non-Primary Tier, Near Zero Downtime Maintenance on Non-Primary Tier Workflow, Near Zero Downtime Maintenance on Primary Tier, Performing Near Zero Downtime Maintenance on Primary Tier, Near Zero Downtime Maintenance on Primary Tier Workflow, Performing a Near Zero Downtime SAP HANA Update, Near Zero Downtime SAP HANA Update Workflow, Near Zero Downtime SAP HANA Update on Primary Tier, Performing a Near Zero Downtime SAP HANA Update on Primary Tier, Near Zero Downtime SAP HANA Update on Primary Tier Workflow, Register Primary Tier as new Secondary Tier, Registering a Primary Tier as new Secondary Tier, Register Primary Tier as new Secondary Tier Workflow, Removing Replication Status Configuration, Remove Replication Status Configuration Workflow, Updating Replication Status Configuration, Update Replication Status Configuration Workflow, Deactivating (OS Shutdown) Virtual Elements, Deactivating (Power Off) Virtual Elements, General Prerequisites for Provisioning Systems, Refreshing a Database Using a Database Backup, Executing Post-Copy Automation Standalone, Monitoring a System Clone, Copy, Refresh, or Rename, Installing Application Servers on an Existing System, Creating SAP HANA System Replication Tiers, Destroying SAP HANA System Replication Tiers, Configuring SAP Host Agent Registered Scripts, Creating Provider Script Registered with Host Agent, Parameters for Custom Operations and Custom Hooks, Creating Documentation for Custom Operations, Rearranging the Order of Custom Operations, Parameterizing Values for Provisioning Templates, Saving Activities as Provisioning Blueprints, Saving Provisioning Blueprints as Operation Template, Grouping Templates available in the Schedule, Filtering Templates available in the Schedule, Downloading Activities Support Information, General Security Aspects and Relevant Assets, Assets SAP Landscape Management Relies On, Setting Authorization Permissions for Operations and Content, Setting Authorization Permissions for Views, https://help.sap.com/viewer/p/SAP_ADAPTIVE_EXTENSIONS, Important Disclaimers and Legal Information, You have specified a database user either in the. 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