High availability and disaster recovery for SQL Server in Azure Virtual Machines. Hardware and Software are the backbones of most of businesses today. To minimize the downtime and impact to the business, we need a high availability (HA) or disaster recovery (DR) plan in place. You should first understand the difference between High Availability and Disaster Recovery, so that you can explain it to your management and get all approval for procuring the perfect system in place. This course focuses on configuraing this feature.