n is either 1 (true) or 0 (false). The default value is 0.
When ShutDownLogErrors is enabled (n = 1), during shutdown InterSystems IRIS logs error information from ^SYSLOG to the messages.log file (located in the install-dir\mgr directory, or the alternate directory named by the console parameter). When ShutDownLogErrors is not enabled, these errors are not logged.
For more information, see InterSystems IRIS System Error Log in the “Monitoring InterSystems IRIS Using the Management Portal” chapter in Monitoring Guide.
Changing This Parameter
On the Compatibility page of the Management Portal (System Administration > Configuration > Additional Settings > Compatibility), in the ShutDownLogErrors row, click Edit. Select ShutDownLogErrors to enable this setting.
Instead of using the Management Portal, you can change ShutDownLogErrors in the Config.MiscellanousOpens in a new tab class (as described in the class reference) or by editing the CPF with a text editor.