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Witness Server Instance (Configure Database Mirroring Security Wizard)

Use this page to specify information about the server instance that is to serve as the witness for the session.

NoteNote

The witness server instance can run on SQL Server Standard, Enterprise, Workgroup, or Express editions.

To configure database mirroring by using SQL Server Management Studio

Witness server instance

If a witness server instance is already specified (on the Mirroring page of the Database Properties dialog box), that instance is displayed (for more information, see Database Properties (Mirroring Page)).

Otherwise, this list box displays the name of the current server. Be aware that the witness server instance cannot be the same as the principal or mirror server instances.

Connect

If a witness server instance has not been specified, click Connect. This displays the Connect to Server dialog box in which you can specify the server instance and establish a connection.

If the instance has been specified, but the wizard lacks a connection with sufficient permission to check for the existence of the endpoint, click Connect. This displays the Connect to Server dialog box with the server instance pre-selected and unchangeable. Specify a domain account with sufficient permission, and connect to the server instance.

NoteNote

When connecting to the server instance, the Configure Database Mirroring Security Wizard uses the credentials provided in the Connect to Server dialog box. These are different from the credentials of a mirroring session, which uses the credentials of the startup account where the server instance is running as a service.

Listener Port

The behavior of this option depends on whether the mirroring endpoint exists for this server instance, as follows:

  • If the listener port does not exist for the server instance, port number 5022 is displayed in the Port text box. You can enter any available port number, such as, 7022.

  • When the mirroring endpoint already exists, the port number from the endpoint is displayed. If you need to change that port, use an ALTER ENDPOINT statement. For more information, see ALTER ENDPOINT (Transact-SQL).

    NoteNote

    A port number is required.

Endpoint name

If the mirroring endpoint exists for this server instance, the endpoint name is displayed here. If the endpoint does not exist, you can specify the name of the endpoint.

Encrypt data sent through this endpoint

By default, encryption is enabled. When enabled, encryption is required (not merely supported) and uses the default values for all of the encryption options. For more information, see CREATE ENDPOINT (Transact-SQL).

To disable encryption, clear the check box. To re-enable encryption, select the check box.

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