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Increase the availability of a database.

MIRRORING

Increase data protection.

Mejora la disponibilidad de la base de datos de producción durante las actualizaciones.

in the event of a disaster, in high security mode with automatic failover, failover quickly puts the backup copy of the database online (no data loss).

is the process of creating and admiring multiple copies of a database in order to back up, recover and / or optimize the performance of the database

The mirroring of the database provides complete or almost complete redundancy of the data, depending on whether the operation mode is high security or high performance. For more information, see operation modes, later in this topic.

To minimize the downtime of a duplicate database, you can sequentially update the instances of SQL Server that host the failover partners. This will incur the downtime of a single failover

Benefits

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