The course is part of this learning path
High availability and disaster recovery are key to ensuring reliable business continuity. While SAP workloads are mainly confined to Azure's infrastructure layer, it is still possible to utilize many Azure functions and features to enhance system reliability with relatively little effort. This course looks at when, where, and how to use Azure's built-in infrastructure redundancy to improve system resiliency and how various database high availability options are supported.
Learning Objectives
- Understand the key aspects of high availability and disaster recovery
- Learn about availability and availability zones
- Learn about Azure Site Recovery and how to implement it through the Azure portal
- Learn how to set up an internal load balancer in the context of SAP workloads
- Understand the Azure support options for Pacemaker and STONITH
- Learn how to implement Data Guard mirroring via the Azure CLI
- Set up Windows Failover Cluster and SQL Server Always On through the Azure portal
Intended Audience
This course is intended for anyone who wants to use Azure's built-in infrastructure redundancy to enhance the reliability and resiliancy of their SAP workloads.
Prerequisites
To get the most out of this course, you should be familiar with Azure, Azure CLI, SAP, SQL Server, and STONITH.
In the context of a HANA Large instance with system replication, we're essentially talking about a hosted on-premises type installation. As this is not virtual, you're restricted to using a STONITH device. Your best bet is to get the Microsoft Service Management team to set up the SBD device as part of the initial system provisioning. Once in place, the Service Management team will give you the STONITH device name and IP address of the iSCSI storage so you can configure high availability using the following steps.
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Identify the STONITH device.
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Initialize the STONITH device.
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Set up the cluster.
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Configure Softdog watchdog.
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Join the node to the cluster.
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Validate the cluster.
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Configure the resources to the cluster.
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Test the failover process.
Hallam is a software architect with over 20 years experience across a wide range of industries. He began his software career as a Delphi/Interbase disciple but changed his allegiance to Microsoft with its deep and broad ecosystem. While Hallam has designed and crafted custom software utilizing web, mobile and desktop technologies, good quality reliable data is the key to a successful solution. The challenge of quickly turning data into useful information for digestion by humans and machines has led Hallam to specialize in database design and process automation. Showing customers how leverage new technology to change and improve their business processes is one of the key drivers keeping Hallam coming back to the keyboard.