To implement a disaster recovery (DR) solution for your Azure Synapse Analytics environment and Azure Data Lake Storage (ADLS) Gen2 account, you must combine storage-level redundancy with Synapse-specific backup features.
1. Storage Account Disaster Recovery
For the Azure Data Lake Storage Gen2 account, use geo-redundant options to ensure data remains durable during a regional outage.
*-> Replication Type: Configure the account for Geo-redundant storage (GRS) or Geo-zone- redundant storage (GZRS). This asynchronously replicates data to a secondary paired region.
Failover: In a disaster, you can initiate a customer-managed failover, which updates DNS entries to make the secondary endpoint the new primary.
Read Access: For better availability, use Read-access geo-redundant storage (RA-GRS), which allows read-only operations from the secondary region even before a failover is initiated.
*-> 2. Azure Synapse Analytics Geo-Backup
Azure Synapse includes built-in geo-backup capabilities, primarily focused on the data warehouse components.
Standard Geo-Backup: Synapse automatically performs a geo-backup once every 24 hours to the paired region. This ensures a Recovery Point Objective (RPO) of 24 hours.
Restoration: In a DR event, you can restore these backups to a new workspace in a different region using the Azure portal or PowerShell.
Serverless SQL Pool: Since serverless SQL pools do not persist data (only metadata like views and external tables), they rely heavily on the ADLS Gen2 recovery described above. You should maintain your DDL scripts (schema) in source control (e.g., Git) to quickly recreate metadata in the secondary region.
3. Apache Spark Pool Recovery
Reference:
https://learn.microsoft.com/en-us/azure/synapse-analytics/sql-data-warehouse/backup-and-restore