RH445 Red Hat High Availability Clustering for SAP Solutions — Lesson 3: Shared Storage, Filesystems, Replication, SAP HANA, and Failover Design

Learning Objectives

• Evaluate security, resilience, integration, and exception handling for shared storage, clustered filesystems, and replication choices.
• Apply SAP HANA integration and failure domains while preserving reviewable technical evidence.
• Recognize and correct the risk where the design works normally but fails under scale, dependency loss, policy enforcement, or integration delay.

Detailed Topics

• shared storage: apply the concept to an SAP operations team protecting critical application and database services across a clustered RHEL platform, record the relevant settings or decisions, and explain the operational consequence.
• clustered filesystems: apply the concept to an SAP operations team protecting critical application and database services across a clustered RHEL platform, record the relevant settings or decisions, and explain the operational consequence.
• replication choices: apply the concept to an SAP operations team protecting critical application and database services across a clustered RHEL platform, record the relevant settings or decisions, and explain the operational consequence.
• SAP HANA integration: apply the concept to an SAP operations team protecting critical application and database services across a clustered RHEL platform, record the relevant settings or decisions, and explain the operational consequence.
• failure domains: apply the concept to an SAP operations team protecting critical application and database services across a clustered RHEL platform, record the relevant settings or decisions, and explain the operational consequence.

Instructor Demonstration

The instructor demonstrates shared storage, filesystems, replication, sap hana, and failover design by tracing the relevant architecture, commands, configuration, messages, and evidence. The walkthrough highlights how the design works normally but fails under scale, dependency loss, policy enforcement, or integration delay and shows how to isolate the cause without masking dependent issues.

Hands-On Exercise

Introduce a controlled boundary condition and test recovery for Shared Storage, Filesystems, Replication, SAP HANA, and Failover Design. Add verified outcomes to the SAP cluster architecture, tested resource configuration, failover evidence, and recovery runbook.

1. Confirm the scope, versions, access, dependencies, and success criteria.
2. Perform the workflow while recording commands, settings, output, and platform events.
3. Test one expected case and one controlled exception specific to this lesson.
4. Retest the correction and document ownership, rollback, and follow-up actions.

Scenario Analysis

• Identify which dependency most strongly influences shared storage in the stated scenario.
• Compare two approaches for SAP HANA integration and explain the security, reliability, and support trade-offs.
• Decide what evidence must be retained in the SAP cluster architecture, tested resource configuration, failover evidence, and recovery runbook before operational acceptance.

Troubleshooting Guidance

Begin with the first observable difference from the expected result. Check security, integration, boundary conditions, and resilience separately, then correlate logs, events, commands, and configuration history. Do not accept the initial assumption that the design works normally but fails under scale, dependency loss, policy enforcement, or integration delay; confirm the cause with a reproducible retest.

Validation Checklist

• The required security, integration, boundary conditions, and resilience were checked and recorded.
• The normal path and a course-specific exception were tested.
• The SAP cluster architecture, tested resource configuration, failover evidence, and recovery runbook links conclusions to commands, configuration, logs, or other objective evidence.
• Corrective actions, rollback steps, ownership, and handover notes are complete.

Lesson Outcome

Learners can apply Shared Storage, Filesystems, Replication, SAP HANA, and Failover Design, explain the observed Red Hat platform behavior, and support the result with a reviewable SAP cluster architecture, tested resource configuration, failover evidence, and recovery runbook.