SAP HANA System Replication on SLES for SAP Applications
If you would like to know how to implement the solution including SUSE Linux Enterprise for SAP Applications, please read our setup guide available at: https://www.suse.com/promo/saphana-replication.html
What is this SAPHanaSR solution about?
The new SAPHanaSR solution created by SUSE is to automate the takeover in SAP HANA system replication setups.
The basic idea is that only synchronizing the data to the second SAP HANA instance is not enough, as this only solves the problem of having the data shipped to a second instance. To increase the availability you need a cluster solution, which controls the takeover of the second instance as well as providing the service address for the client access to the database.
If you do not like the cluster to proceed an automated registration of the former primary, you could change the resource parameters and the cluster will keep the “broken”/former primary in shutdown status. This could make sense, if administrators first like to figure out what happened at this instance in detail or for other operating aspects.
When the automated registration is switched off, the administrator could register the former primary at any time. The cluster resource agent will detect this new status during the following monitor action.
Read more about current limitations, recommendations and a list of setup-steps in my next blog article.