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When I uninstall/upgrade OPCFailover will my OPC Clients need to be stopped and restarted?

April 26, 2017clients OPC opcfailover restarted stopped uninstall upgrade

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When I uninstall/upgrade OPCFailover will my OPC Clients need to be stopped and restarted?

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No. Your OPC Clients will continue to function and be totally unaware that OPCFailover has been uninstalled or upgraded. If OPCFailover is uninstalled and the Active OPC Server within a group fails then a new Active OPC Server will not be assigned. This will result in the OPC Client attempting a reconnect to the failed OPC Server [just like it would do without OPCFailover in place]. What are the best poll periods to use? This depends on how quickly you want an OPC Server failure detected and acted upon. Polling the Active OPC Server every second and setting the polling of the standby OPC Server to ‘Never’ has been found to work very well and not induce an noticeable load on the OPC Client or OPC Server nodes. I’ve tried to browse to add OPCServers to my failover group, but the browsing is not working. What do I do? This is very likely caused by the firwall settings at the remote node. To perform a browse of a remote node File and Printer Sharing must be opened (TCP 137, 138, 139, 445).