Book Image

Professional SQL Server High Availability and Disaster Recovery

By : Gethyn Ellis
5 (1)
Book Image

Professional SQL Server High Availability and Disaster Recovery

5 (1)
By: Gethyn Ellis

Overview of this book

Business continuity is of utmost importance. High availability (HA) and disaster recovery (DR) ensure that your infrastructure experiences no downtime and smoothly functions at all times. Sound knowledge of various HA and DR techniques help you to drastically reduce the downtime of your applications. This course begins by explaining the high availability and disaster recovery technologies available in SQL Server: Replication, AlwaysOn, and Log Shipping. You’ll learn what they are, how to monitor them, and how to troubleshoot any related problems. You’ll learn how to use different HA and DR topologies to create a highly available infrastructure that also includes hybrid topologies. You’ll learn what is Always On, it’s pros and cons, prerequisites, and restrictions. You’ll also learn about log shipping, one of the oldest SQL Server solutions, which is mostly used for DR and SQL Server migration. Through this course, you will be able to explore the technical implementations of high availability and disaster recovery technologies that you can use when you create a highly available infrastructure, including hybrid topologies. By the end of the course, you’ll feel confident and look forward to changing the game with robust and high performing infrastructure.
Table of Contents (7 chapters)
Chapter 4
AlwaysOn Availability Group
Content Locked
Section 4
Prerequisites for Configuring Availability Groups
We'll first look at the prerequisites for the setup and will then do the following: - Set up four Hyper-V VMs; one VM will act as a domain controller and the other three will be the availability group replicas - Set up AlwaysOn AGs As a part of the AlwaysOn availability setup, we'll also configure a domain controller. In a real-world scenario, configuring a domain controller and Windows Server Failover Cluster is part of a System Administrator's job. We'll also talk about modifying an existing availability group such as adding/removing a database from an availability group, modifying backup preferences, and adding a new replica.