Configure device redundancy

Setup up a REDUNDANT_DEVICE from the configuration branch

1. Configure a primary device in the OI Server Manager in the OCMC. You must enter a valid network address in the configuration parameters, and add an item reference that can be shared with the the device's secondary partner.

2. Configure a secondary device. Enter a valid network address and add the same item reference that was added for the primary device.

   Important: You cannot mix Legacy and Symbolic objects when configuring a redundant pair, since these objects use different item syntaxes. Both primary and secondary devices must be the same type.

3. Select and right-click on the configuration node under the OI.SIDIR.1 object.

4. Select Add REDUNDANT_DEVICE Object. An object called New_REDUNDANT_DEVICE_000 is created.

5. Rename the newly created object as appropriate. The New_REDUNDANT_DEVICE_000 configuration view is displayed in the Configuration branch of the hierarchy.

6. Enter or use the device browser to select the primary and secondary devices. Open the device browser by clicking on the ellipses (...) button and expand the device hierarchy that is displayed in the browser.

   

7. Enter one device item as the Ping Item that can be shared between the primary and secondary devices to determine device status.

8. Save the hierarchy node configuration by clicking on the save icon.

   Important: A Ping item must be specified and be a valid tag in both the primary and secondary controllers to determine the connection status for $SYS$Status. The Ping item can be a static item in the device such as a firmware version or processor type. If the Ping item is invalid or does not exist in the controller, the failover operation may not work correctly as the value of $SYS$Status may continue to stay as FALSE in the standby device.