3High availability and disaster recovery (HADR)

• 3.1High availability (HA)

  Understand SLA considerations, availability sets vs availability zones, load balancing, clustering for HANA/SAP Central Services, and Pacemaker with STONITH (Azure fence agent / SBD).

• 3.2Disaster recovery (DR)

  Understand Azure Site Recovery strategy, region-aware DR design, DR networking, backup strategy meeting RPO/RTO, snapshots, backup/restore, and DR testing.