SAP

Starting with firmware level MH1030 on IBM Power10 servers, you can use a hypervisor watchdog to implement RHEL HA Add-On clusters with STONITH Block Devices (SBD). SBD fencing is an alternative to the HMC-based fencing agent. It simplifies cluster setup and operation and is the recommended fencing method where available.

Please read this SAP Community blog post for a detailed description of how to set up a RHEL HA Add-On cluster using SBD devices for fencing:

Implementing a RHEL HA Add-On Cluster with SBD fencing - SAP Community

The resulting cluster can then be used to implement a variety of high-availability scenarios for SAP solutions. The Red Hat HA Solutions for SAP HANA, S/4HANA and NetWeaver based SAP Applications document provides references to documentation for implementing the supported HA scenarios.

A comprehensive set of documentation for implementing high availability for various SAP application scenarios is also available at Implementing High Availability for SAP Applications on IBM Power Virtual Server.  Although this IBM Cloud documentation is written for implementing a high availability cluster running on IBM Power Virtual Server in the IBM Cloud, the cluster configuration of the SAP application scenarios is the same whether implemented in a cloud or in an on-premises environment.  The main difference is the setup of the base cluster, including the configuration of a fencing agent.