Failover and redundancy
- Last UpdatedJun 10, 2025
- 1 minute read
Note: PI Connector for OPC UA 2.0 and above does NOT support connector level failover.
To enable server redundancy support, your server must support it. Using a third party OPC UA client, you can find it out by taking a look at the value of the RedundancySupport property, which must be set to something else than None. This screenshot provides an example of a server which does not support the redundant scenario.
Server redundancy support options
Provided your server runs in a redundant scenario, enable it explicitly on the connector by marking and populating the entries described in the following table.
|
Setting |
Description |
|---|---|
|
[ ] Enable OPC UA Server Redundancy |
Marking this tells the connector that an OPC UA server supports and runs in a redundant scenario. Note: When marked, the Endpoint URL of a backup server becomes a mandatory field. |
|
[ ] Backup OPC UA Server Endpoint URL |
Specifies the Endpoint URL of a backup server. |
|
Failover Transition Delay [ 60 ] |
Specifies the failover transition delay. Note: The connector will fail back to a redundant OPC UA server provided the indicator (ServiceLevel) of a current server is within the interval <2-200> and the specified time expired. |