Comparison: High Availability Options for Azure SQL Server

An abundance of options is not always a blessing. Sometimes it just creates confusion. Consider the options that present themselves if you want to configure a mission-critical SQL Server infrastructure for high availability (HA) and disaster recovery (DR) on Azure. You could run SQL Server on multiple virtual machines (VMs) configured as a Windows Failover Cluster Instance with the VMs spread across Fault Domains or across multiple Azure Availability Zones.


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