Enable UniInt failover

Use PI ICU to configure and enable UniInt failover for the interface.

Before you enable UniInt failover, create both instances of the interface, configure buffering, and configure the shared file location.

1. For the first interface instance, click UniInt > Failover.

2. Select Enable UniInt Failover and choose Phase 2.

3. In the Synchronization File Path box, specify the location of the shared file.

   Note: For additional information on errors you may encounter, see the Supported and unsupported Phase 2 Failover Synchronization File Path Knowledge Transfer article.

4. From the UFO Type list, choose the level of failover.

   Options for failover are HOT, WARM, or COLD. For more information about failover modes, see Hot, warm, and cold failover modes.

5. Browse to the location of the other interface instance.

   Note: Ensure the interface failover ID (ufo_id) parameter settings of each interface instance match the other interface failover ID (ufo_otherid) parameter settings of the other interface instance.

6. Optional: Configure the following settings:

   • Set the update rate for the heartbeat point if you need a value other than the default of 5000 milliseconds.

   • If the Data Archive node is part of a collective, configure the primary and backup instances to connect to different members of the collective using PI ICU. For each interface instance, perform the following steps:

   • Go to the General page for the interface instance.

   • In the PI Hostname section, set the Server/Collective and SDK Member boxes to point to different Data Archive hosts for each interface instance. This ensures that if a Collective Member goes down, at least one interface can still connect to the other Collective Member for Outputs points, PI point updates, and loading PI points (if the interfaces are restarted). For more information, see the discussion of failover in the High Availability Administrator Guide.

7. Click Apply.

8. Create the failover digital state set if it has not been created. Right-click the PI point list, and then click Create UFO_State Digital Set on Server ServerName.

9. On the first interface instance only, right-click the list of failover points and then click Create all points (UFO Phase 2) to create all the required failover PI points.

   

10. Click Close to save.