Redundancy of Connectivity Server
Our plant is equipped with two connectivity servers. I have some question regarding its redundancy:
1-If one server got failed how the system will react?
2-How much time is required to shift to another server?
3-The shifting of all OS from one server to another server will be automatically or we have to shift manually?
4-If this is manually how we have to do?
5-Currently, on my engineering station the OpcDa_Connector service is running through CS server-1 and Igonored is "false". What will happen if CS server-1 got failed.
6-Where I can see how many workstation's services are running through CS-1 & how many through CS-2?
If one of your connectivity server fails, the redundant connectivity takes up immediately. In General, the switchover happens automatically if one server fails and no manual efforts are required.You can find the services run by machines on your network in Service Structure-> system service status. Here you will find the services running on your aspect/connectivity server. Under each service, you will find service Group and Service provider.
Under opc service, you will find one service group and 2 service provider. Each service provider will be configured for your 2 connectivity servers. Both will be in service state. You can also check the services using 'afwservicestatus' in run window.
However I suggest you to check your server redundancy by restarting one of your connectivity server. If you have never worked on it before, I request you to check this during your shutdown/downtime. If you face any problems contact your regional support center.
Redundancy switchover is completely automatical, you don't have manual effort. You may see red or yellow crosses on some of you workplaces for two seconds.
But keep in mind to set you affinity in a proper way to share the load between your servers in a defined way if both are up and running.