December 2013
Intermediate to advanced
1872 pages
153h 31m
English
book
Microsoft® SQL Server 2012 Unleashed
by Ray Rankins, Paul T. Bertucci, Chris Gallelli, Alex T. Silverstein
Content preview from Microsoft® SQL Server 2012 Unleashed
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Roles of the Database Mirroring Configuration
As you have seen, a typical database mirroring configuration has a principal server, mirror server, and witness server. Each of these servers plays a role at some point. The principal and mirror switch roles, so it is important to understand what these roles are and when a server is playing a particular role.