Backup Management and Compliance
Azure SQL Database and Azure SQL Managed Instance provide automated backup solutions that support long-term retention and geo-redundant storage. Long-term retention lets you keep full backups for up to 10 years to meet compliance requirements. All backup data is encrypted using strong encryption methods, both at rest and during transfer. Azure Database for MySQL supports automatic server backups with user-configured LRS or GRS and an adjustable retention period between 7 and 35 days. These backups are encrypted with AES 256-bit encryption, ensuring secure recovery processes. When designing a strategy, you must choose the retention period and redundancy level that match your organization's compliance policies and recovery objectives.
Configuring Recovery Services Vault
A Recovery Services Vault is the central management entity for backups in Azure. To create one, sign in to the Azure portal and navigate to the Business Continuity Center dashboard. Create a new vault, ensuring it is in the same region as the data source you want to protect. The vault stores backup data, manages backup policies, and orchestrates restore operations. You configure backup policies within the vault to define how often backups run, how long they are retained, and which redundancy option to use.
High Availability and Disaster Recovery
High availability keeps your database running with minimal disruption through redundant, fault-tolerant, or failover-protected components. For SAP applications, this means distributing application servers across multiple Azure VMs and subnets to avoid a single point of failure. In Azure Data Explorer, high availability involves a fault-tolerant persistence layer with default LRS, optional ZRS for zone failover, and high-availability configurations at the compute layer. Disaster recovery practices include enabling delete locks to prevent accidental deletion, using undo commands for recoverability, and taking snapshots for protection against accidental data loss. These measures ensure that even if a component fails, the system can continue operating or recover quickly.
Cross Region Restore
Enabling Cross Region Restore in a Recovery Services Vault allows you to restore data in a secondary Azure region. This is essential for meeting compliance requirements and ensuring data availability during a regional disaster. Cross Region Restore is recommended for services configured with GRS storage, because GRS already replicates backups to the paired secondary region. When enabled, this feature provides a secondary Recovery Point Objective (RPO), meaning recovery points are replicated to the secondary paired region within 12 hours. This ensures you can recover your database even if the primary region is completely unavailable.
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