SAP HANA STUDIO ROLE FOR REPLICATION MANUAL

If the primary SAP HANA system fails, the system administrator must perform a manual takeover.

SAP HANA STUDIO ROLE FOR REPLICATION FULL

Full Sync mode stops the surviving node if either node is down, so failover with SUSE HAE is not possible.

Full Sync: Full synchronization is supported by SAP but cannot be configured with SUSE HAE.

Asynchronous (mode=async): Transaction is committed after log entries are sent without any response from the secondary system.

Synchronous in memory (mode=syncmem): Transaction is committed after the secondary system receives the logs, but before they are written to disks.

Synchronous on disk (mode=sync): Transaction is committed after log entries are written on primary and secondary systems.

The following replication modes are available for this procedure: After this, any logged changes in the primary system are also sent to the secondary system. After system replication is setup between the two SAP HANA systems, it replicates all the data from the primary HANA system to the secondary HANA system (initial copy). SAP HANA System Replication is implemented between two different SAP HANA systems with same number of active nodes. This solution needs additional servers and storage. SAP HANA hardware partners offer this solution. Disks are mirrored without a control process from the SAP HANA system.

Storage Replication: Data replication is achieved by means of storage mirroring independent from the database software.

The focus of this reference architecture guide is SAP HANA System Replication. Data can be constantly pre-loaded in the memory of the secondary system to minimize the recovery time objective (RTO).

SAP HANA System Replication: SAP HANA replicates all data to a secondary SAP HANA system constantly.

This solution does not need additional storage, only servers. The standby node becomes a worker node and takes over user load. In case of failure, data and log volumes of a failed worker node is taken over by a standby node.

Host Auto-Failover: One (or more) standby nodes are added to a SAP HANA system and configured to work in standby mode.

These solutions are based on completely redundant servers and/or storage. In addition to these features, SAP and its partners offer the following high availability mechanism for SAP HANA.

SAP HANA STUDIO ROLE FOR REPLICATION SOFTWARE

To provide fault recovery SAP HANA software includes a watchdog function, that automatically restarts configured services (index server, name server, and so on) in case of their failure. This should happen without any data loss (zero RPO) and in very short recovery time (low RTO). This requires that these systems can make faster recovery after system component failure (High Availability) or after a disaster (Disaster Recovery). SAP HANA database runs mission critical applications and it is important that these systems remain available to users always.

SAP HANA STUDIO ROLE FOR REPLICATION HOW TO

How To Perform System Replication for SAP HANA 2.0 SPS 02.SAP Note 2407186 вЂ“ How-To Guides & Whitepapers For SAP HANA High Availability.SAP Note 1999880 вЂ“ FAQ: SAP HANA System Replication.

SUSE Linux Enterprise High Availability Extension SLEHA вЂ“ Guide.

SUSE Linux Enterprise Server for SAP Applications 12 SP3 вЂ“ Guide.

SAP HANA SR Performance Optimized Scenario вЂ“ SLES 12 SP01.

Scenario Implemented вЂ“ Performance Optimized Scenario Reference SUSE Best Practices SUSE Version вЂ“ SLES for SAP Application 12 SP 03 (Without the SLES for SAP Application the customer would not be able to receive one of the resource agent required for SAP) For more updated information, always use the latest SAP Notes and Guide to best implement High Availability for HANA. ScopeД«elow are the system version on which this document has been prepared. It will also provide you details on the various method, services and agents involved to setup automatic failover of HANA. This blog, will give you insight on System Replication and SuSE High Availability Extension overview. This blog can also be taken as reference for x86_64 Servers as steps remains the same.

SAP HANA STUDIO ROLE FOR REPLICATION SERIES

This 3 Series blog will help you to get insight on the High Availability of SAP HANA scale-up systems with HANA System Replication and Automated failover using SUSE High Availability Extension (SUSE HAE) implemented on POWER Servers. This is a guest blog reposted with the permission of the author Dennis Padia, SAP Technical Consultant & Architect at Larsen and Toubro Infotech.

Sap hana studio role for replication