December 2017
Intermediate to advanced
434 pages
10h 14m
English
Content preview from SQL Server 2017 Administrator's Guide
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Database mirroring
Database mirroring is an older HA/DR feature available in SQL Server, which provides database-level protection. Mirroring allows synchronizing the databases between two servers, where you can include one more server as a witness server as a failover quorum.
Unlike the previous two features, database mirroring does not require any special setup such as Failover Cluster and the configuration can be achieved via SSMS using a wizard available via database properties. Once a transaction occurs on the primary node, it's copied to the second node to the mirrored database. With proper configuration, database mirroring can provide failover options for high availability with automatic client redirection.
Database mirroring is not ...
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