December 2017
Intermediate to advanced
434 pages
10h 14m
English
Content preview from SQL Server 2017 Administrator's Guide
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Configuring Always On Availability Groups
Before we start configuring the Availability Groups, we need to make sure all the prerequisites are met on the server, instance, and database levels. Databases for Availability Groups need to do the following:
- Be user databases (no system DBs are allowed)
- Use a full recovery model
- Be read/write databases
- Be multi-user databases
- Have at least one full backup
There are several key terms which we need to define to be able to work with Availability Groups. Availability Group itself is a set of user databases, which is considered a unit for high availability. These databases (or the availability group) fail over to other nodes of the WSFC if there is an issue detected either at the server level or the ...
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