The next step is to configure virtual points to track redundant server status during system operation. The points have the following requirements:
Naming convention is:
MASTER_PTM_RP for the primary server
SLAVE_PTM_RP for the secondary server
Type is virtual
Class is Digital
Calculation for the point is None (default).
A point will take on a value of:
1 if the server it represents is currently operating as the primary server
0 if the server is the secondary server
The current Primary Point Manager will only change the values. This implies that point updates to the global points will occur when:
There is a redundant server failure
Redundant servers are synchronized at startup
An orderly transition from secondary to primary server occurs.
Important: If you are using point lines in Trending that automatically look for the data source, you must configure MASTER_PTM_RP and SLAVE_PTM_RP. These are the points that Trending needs to failover to the secondary server if the primary is down.
Base system configuration.