internal, and replication network interfaces. If you plan to use storage connector APIs, you must configure the multipath.conf and global.ini files before installation. collected and stored in the snapshot that is shipped. Unregisters a system replication site on a primary system. SAP HANA components communicate over the following logical network zones: Client zone to communicate with different clients such as SQL clients, SAP SAP HANA dynamic tiering is an integrated component of the SAP HANA database and cannot be operated independently from SAP HANA. before a commit takes place on the local primary system. Linux' predictable network device names aka default network was "eth0" is now still predictably used as "enp1s0" with different rule set. SAP HANA supports asynchronous and synchronous replication modes. 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.. The BACKINT interface is available with SAP HANA dynamic tiering. At the time of the parameters change in Production both TIER2 and TIER3 systems were stopped and removed from Replication setup Import certificate to HANA Cockpit (for client communication) [, Configure clients (AS ABAP, ODBC, etc.) We know for step(4), there could be one more takeover, and then site1 will become new primary, but since site1 and site2 has the same capacity, it's not necessary to introduce one more short downtime for production, right? With an elastic network interface (referred to as Usually system replication is used to support high availability and disaster recovery. own security group (not shown) to secure client traffic from inter-node communication. Make sure And you need to change the parameter [communication]->listeninterface to .internal and add internal network entries as followings. site1(primary) becomes standalone and site3(dr) is required to be promoted as secondary site temporarily while site2 is being repaired/replaced in data center. with Tenant Databases. Activated log backup is a prerequisite to get a common sync point for log These steps helped resolve the issue and the System Replication monitor was now reflecting all 3 TIERS The delta backup mechanism is not available with SAP HANA dynamic tiering. number. HANA XSA port specification via mtaext: SAP note 2389709 - Specifying the port for SAP HANA Cockpit before installation Needed PSE's and their usage. This blog provides an overview of considerations and recommended configurations in order to manage internal communication channels among scale-out / system replications. Network Configuration for SAP HANA system replication Contact Us Contact us Contact us This site uses cookies and related technologies, as described in our privacy statement, for purposes that may include site operation, analytics, enhanced user experience, or advertising. Please use part one for the knowledge basics. There are two possibilities to store the certificates: Due to the flexiblity there are some advantages (copy move of databases) in the newer solution (certificate collection), but if you have to update 100 HANA instances with new certificate every 2 years it can be easier to use the file based solution. Please keep in mind to configure the correct default gateway with is/local_addr for stateful firewall connections. We're sorry we let you down. Data Hub) Connection. # 2021/03/18 Inserted XSA high security Kudos out to Patrick Heynen This is the preferred method to secure the system as it's done automatically and the certificates are renewed when necessary. If you want to force all connection to use SSL/TLS you have to set the sslenforce parameter to true (global.ini). Binds the processes to this address only and to all local host interfaces. The last step is the activation of the System Monitoring. Comprehensive and complete, thanks a lot. * Internal networks are physically separate from external networks where clients can access. If you raise the isolation level to high after the fact, the dynamic tiering service stops working. Connection to On-Premise SAP ECC and S/4HANA. the secondary system, this information is evaluated and the If you've got a moment, please tell us what we did right so we can do more of it. automatically applied to all instances that are associated with the security group. ALTER SYSTEM ALTER CONFIGURATION ( global.ini, SYSTEM ) SET( customizable_functionalities, dynamic_tiering ) = true. Step 1 . Therfore you You can also create an own certificate based on the server name of the application (Tier 3). Registers a site to a source site and creates the replication There are two scripts: HANA_Configuration_MiniChecks* and HANA_Security_Certificates*. Run hdblcm (with root) with the path of extracted software as parameter and install dynamic tiering component without addition of DT host. Perform SAP HANA Following parameters is set after configuring internal network between hosts. documentation. Therfore you first enable system replication on the primary system and then register the secondary system. EC2 instance in an Amazon Virtual Private Cloud (Amazon VPC). global.ini: Set inside the section [communication] ssl from off to systempki. You can use the SQL script collection from note 1969700 to do this. (3) site3 is still registered to the site2 (as it's not impacted, async only as remote DR); Refresh the page and To Be Configured would change to Properly Configured. To configure your logical network for SAP HANA, follow these steps: Create new security groups to allow for isolation of client, internal Do you have similar detailed blog for for Scale up with Redhat cluster. Data Lifecycle Manager optimizes the memory footprint of data in SAP HANA tables by relocating data to Dynamic Tiering or HADOOP. Starts checking the replication status share. This note well describes the sequence of (un)registering/(re)registering when operating replication and upgrade. network interface, see the AWS first enable system replication on the primary system and then register the secondary Public communication channel configurations, 2. Therefore, you are required to have 2 separate networks for system replication, one is for primary site to secondary site and another is for secondary site to tertiary site and each host in your secondary site should have an additional NIC. For more information, see Assigning Virtual Host Names to Networks. Unless you are using SAPGENPSE, do not password protect the keystore file that contains the servers private key. SAP HANA communicate over the internal network. Enables a site to serve as a system replication source site. 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). network interface in the remainder of this guide), you can create (4) site1 is repaired and joined the replication as secondary(sync to site2, site3 need unregistered from site2 and re-registered to site1). It also means for SAP Note 2386973, the original multitier setup is(SiteA --sync--> SiteB --async--> SiteC), after step 9, the setup is most likely (SiteB--async-->SiteC; SiteA down), and the target multitier setup is (SiteB --sync--> SiteA --async--> SiteC), and then the steps 15-19 can be skipped, and adjusted steps 20-22, to registered SiteC to SiteA. both the SAP HANA databases on the primary and the secondary site share the same license key, identified by the System Identifier (SID) and an automatically generated hardware key. For more information, see https://help.sap.com/viewer/p/SAP_ADAPTIVE_EXTENSIONS. Data Lifecycle Manager is a generic database-driven tool that enables you to model aging rules on SAP HANA tables to relocate aged or less frequently used data from SAP HANA tables in native SAP HANA applications. As mentioned earlier, having internal networks are essential in production system in order to get the expected response time and optimize the system performance. Figure 12: Further isolation with additional ENIs and security ########. need not be available on the secondary system. Checks whether the HA/DR provider hook is configured. 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. SAP HANA System Target Instance. Alert Name : Connection between systems in system replication setup Rating : Error Details : At 2015-08-18 18:35:45.0000000 on hostp01:30103; Site 2: Communication channel closed User Action: Investigate why connections are closed (for example, network problem) and resolve the issue. Instance-specific metrics are basically metrics that can be specified "by . Since quite a while SAP recommends using virtual hostnames. Recently we started receiving the alerts from our monitoring tool: 2386973 - Near Zero DowntimeUpgradesforHANADatabase 3-tierSystemReplication. SQLDBC is the basis for most interfaces; however, it is not used directly by applications. 1761693 Additional CONNECT options for SAP HANA Internal communication channel configurations(Scale-out & System Replication). The certificate wont be validated which may violate your security rules. All tenant databases running dynamic tiering share the single dynamic tiering license. So site1 & site3 won't meet except the case that I described. For more information about how to create and SAP HANA network niping communication connection refused host port IP address , KBA , master , slave , HAN-DB , SAP HANA Database , How To About this page This is a preview of a SAP Knowledge Base Article. The instance number+1 must be free on both It must have the same system configuration in the system Net2Source Inc. is an award-winning total workforce solutions company recognized by Staffing Industry Analysts for our accelerated growth of 300% in the last 3 years with over 5500+ employees . Attach the network interfaces you created to your EC2 instance where SAP HANA is SAP Note 1876398 - Network configuration for System Replication in SAP HANA SP6. +1-800-872-1727. documentation. Single node and System Replication(3 tiers), 3. We used NFS storage in our case which has following requirement: The actual architecture that we followed is as follows: Dedicated host deployment with /hana/shared/ mounted on both the hosts. In this example, the target SAP HANA cluster would be configured with additional network License is generated on the basis of Main memory in Dynamic Tiering by choosing License type as mentioned below. With DLM, you can model data migration rules on SAP HANA tables, and move data at specified times between high performance SAP HANA memory and a lower cost storage and processing tier. instance, see the AWS documentation. You comply all prerequisites for SAP HANA system Log mode SAP HANA and dynamic tiering each support NFS and SAN storage using storage connector APIs. Copy the commands and deploy in SQL command. United States. The systempki should be used to secure the communication between internal components. You have installed SAP Adaptive Extensions. There is already a blog about this configuration: https://blogs.sap.com/2014/01/17/configure-abap-to-hana-ssl-connection/ In HANA studio this process corresponds to esserver service. Name System (DNS). Contact us. -Jens (follow me on Twitter for more geeky news @JensGleichmann), ######## # 2021/04/26 added PIN/passphrase option for sapgenpse seclogin communications. Scale-out and System Replication(2 tiers), 4. This will speed up your login instead of using the openssl variant which you discribed. With MDC (or like SAP says now container/tenants) you always have a systemDB and a tenant. If you use a PIN/passphrase keep in mind that you have to use sapgenpse seclogin option to create the cred_v2 file inside the SECUDIR: Sign the certificate signing request with a trusted Certificate Authority (CA) as pkcs7 which will include all CA certificates. 2211663 . We can install DLM using Hana lifecycle manager as described below: Click on to be configured. system, your high-availability solution has to support client connection Scale-out and System Replication(3 tiers). SQL on one system must be manually duplicated on the other Thanks a lot for sharing this , it's a excellent blog . SAP HANA, platform edition 2.0 Keywords enable_ssl, Primary, secondary , High Availability , Site1 , Site 2 ,SSL, Hana , Replication, system_replication_communication , KBA , HAN-DB-HA , SAP HANA High Availability (System Replication, DR, etc.) SAP HANA Network Requirements Contact Us Contact us Contact us Home This site uses cookies and related technologies, as described in our privacy statement, for purposes that may include site operation, analytics, enhanced user experience, or advertising. SAP HANA Network and Communication Security This Provisioning dynamic tiering service to a tenant database. For your information, having internal networks under scale-out / system replication is a mandatory configuration in your production sites. Your application automatically determines which tier to save data to: the SAP HANA in-memory store (the hot store), or extended storage (the warm store). SAP HANA attributes.ini daemon.ini dpserver.ini executor.ini global.ini indexserver.ini multidb.ini nameserver.ini statisticsserver.ini webdispatcher.ini xsengine.ini application_container auditing configuration authentication authorization backint backup businessdb cache calcengine cds . Replication, Register Secondary Tier for System When you use SAP HANA to place hot data in SAP HANA in-memory tables, and warm data in extended tables, highest value data remains in memory, and cooler less-valuable data is saved to the extended store. This is necessary to start creating log backups. You can configure additional network interfaces and security groups to further isolate A shared file system (for example, /HANA/shared) is required for installation. SAP HANA Security Techical whitepaper ( 03 / 2021), HANA XSA port specification via mtaext: SAP note 2389709 Specifying the port for SAP HANA Cockpit before installation, It is now possible to deactivate the SLD and using the LMDB as leading data collection system. You have assigned the roles and groups required. If you've got a moment, please tell us how we can make the documentation better. is deployed. In the following example, two network interfaces are attached to each SAP HANA node as well can use elastic network interfaces combined with security groups to achieve this network Once the above task is performed the services running on DT worker host will appear in Landscape tab in hana studio. 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 can modify the rules for a security group at any time. instance. You can also select directly the system view PSE_CERTIFICATES. Conversely, on the AWS Cloud, you SAP HANA system replication is used to address SAP HANA outage reduction due to planned maintenance, fault, and disasters. Or see our complete list of local country numbers. Contact us. Alerting is not available for unauthorized users, Right click and copy the link to share this comment. On existing HANA DB host we already have two file systems for DATA and LOG: On Dynamic Tiering Host the following file systems are required which will store ES data and logs: So after the above setup the actual architecture will appear as follows: Communication channel and network requirements. The cleanest way is the Golden middle option 2. # 2020/4/15 Inserted Vitaliys blog link + XSA diagnose details (Storage API is required only for auto failover mechanism). if mappings are specified as either neighboring sites(minimum) or all hosts of own site as well as neighboring sites, an internal(separate) network is used for system replication communication. You may choose to manage your own preferences. Javascript is disabled or is unavailable in your browser. Network for internal SAP HANA communication between hosts at each site: 192.168.1. One question though - May i know how are you Monitoring this SSL Certificates, which are applied on HANA DB ? For scale-out deployments, configure SAP HANA inter-service communication to let configure security groups, see the AWS documentation. RFC Module. This is mentioned as a little note in SAP note 2300943 section 4. Dynamic tiering enhances SAP HANA with large volume, warm data management capability. Since NSE is a capability of the core HANA server, using NSE eliminates the limitations of DT that you highlighted above. If you have a HANA on one server construct which means an additional application server running with the central services running together with the HDB on the same server. More recently, we implemented a full-blown HANA in-memory platform . You can also encrypt the communication for HSR (HANA System replication). documentation. savepoint (therefore only useful for test installations without backup and Post this, Installation of Dynamic Tiering License need to done via COCKPIT. Accordingly, we will describe how to configure HANA communication channels, which HANA supports, with examples. thank you for this very valuable blog series! SAP HANA Native Storage Extension ("NSE") is the recommended approach to implementing data tiering within an SAP HANA system. It's a hidden feature which should be more visible for customers. # 2020/04/14 Insert of links / blogs as starting point, links for part II United States. (Addition of DT worker host can be performed later). If you want to be flexible in case of changing the server (HW change / OS upgrade), you need multiple certificates connected to different hostnames. DLM is part of the SAP HANA Data Warehousing Foundation option, which provides packaged tools for large scale SAP HANA use cases to support more efficient data management and distribution in an SAP HANA landscape. when site2(secondary) is not working any longer. The below diagram depicts better understanding of internal networks: The status after internal network configuration: Once the listener interface has communication method internal, the two hosts (HANA & DT hosts) can communicate securely and their internal IP addresses reflects in parameter -> internal_hostname_resolution, Installation of Dynamic Tiering Component. In Figure 10, ENI-2 is has its own security group (not shown) to secure client traffic from inter-node communication. Wonderful information in a couple of blogs!! recovery. must be backed up. Dynamic tiering is also supported by the Data Lifecycle Manager (DLM), an SAP HANA XS-based tool to relocate data from SAP HANA memory to alternate storage locations such as the dynamic tiering extended store, SAP HANA extension nodes, or Hadoop/Vora. * In the first example, the [system_replication_communication]listeninterface parameter has been set to .global and only the hosts of the neighboring replicating site are specified. Find SAP product documentation, Learning Journeys, and more. The same instance number is used for Dynamic tiering is embedded within SAP HANA operational processes, such as standby setup, backup and recovery, and system replication. primary and secondary systems. 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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