Are there any disaster recovery solutions for SQL Server?

Are there any disaster recovery solutions for SQL Server?

This article provides an overview of business continuity solutions for high availability and disaster recovery in SQL Server.

Why do we need AlwaysOn in SQL Server?

But let’s go back to the architecture of SQL FCI. AlwaysOn FCI was designed to provide the protection from the unplanned node failure or any other possible breakdowns. In case you run out of luck and one of the nodes goes down, the SQL service simply gets started on one of the remaining nodes.

What are the always on availability groups in SQL Server?

SQL Server 2017 introduces two different architectures for availability groups. Always On availability groups provide high availability, disaster recovery, and read-scale balancing. These availability groups require a cluster manager.

How to create a AlwaysOn failover cluster instance?

First, we will go through the process of configuring AlwaysOn Failover Cluster Instance (FCI), the next part of this series will cover the deployment of a DR site for our cluster using AlwaysOn Availability Groups, and finally, we will learn more about how to achieve the same using 3rd party software.

Why is it important to have a disaster recovery plan?

Some SQL Server disasters cannot be prevented. That’s why a good disaster recovery plan is important. A SQL Server disaster recovery plan (DRP) is a process to have SQL Server up and running, and to overcome data loss after a disaster.

What is the definition of a SQL Server disaster?

A SQL Server disaster is an event that causes data loss or any serious SQL Server disruption. Causes of a disaster can be numerous: power failure, hardware failure, virus attack, natural disaster, human error, etc. Some SQL Server disasters cannot be prevented.

When does an automatic failover occur in a database?

Automatic failover can occur if synchronous data movement is configured and the database on the primary and secondary replica are in a synchronized state.

How to recover from Azure storage account failover?

Block blobs: Turn on soft delete to protect against object-level deletions and overwrites, or copy block blobs to another storage account in a different region using AzCopy, Azure PowerShell, or the Azure Data Movement library. Files: Use Azure Backup to back up your file shares.

When to use geo-redundant storage for disaster recovery?

However, unplanned service outages may occur. If your application requires resiliency, Microsoft recommends using geo-redundant storage, so that your data is copied to a second region. Additionally, customers should have a disaster recovery plan in place for handling a regional service outage.

Is the Merge Replication feature supported in SQL Server?

The one feature not covered is SQL Server replication. While not officially designated as an availability feature under the Always On umbrella, SQL Server replication is often used for making data redundant in certain scenarios. Merge replication isn’t supported for SQL Server on Linux.