Kepserver Enterprise Vs Kepserverex -

Regulated industries (FDA 21 CFR Part 11, NERC CIP) require that alarm acknowledgments are never lost. If an operator acknowledges a high-temperature alarm at 2:00 PM, and the primary server crashes at 2:01 PM, that acknowledgment must persist. Enterprise stores acknowledgment states in the SQL database and shares them with the standby node.

While KEPServerEX supports over 150 drivers, certain high-value, advanced drivers are often restricted to the Enterprise tier or require expensive add-ons in the standard tier. kepserver enterprise vs kepserverex

In standard EX, when you switch to a backup server: Regulated industries (FDA 21 CFR Part 11, NERC

Enterprise solution: The standby node maintains live values. Clients reconnect instantly with the correct state. An operator would not notice a failover unless they were watching the console. Enterprise solution: The standby node maintains live values

Ironically, an Enterprise system can fail if the SQL database goes down. If the configuration database becomes unavailable, neither node can start new connections or honor failover. To truly protect against this, you need:

Kepware's recommendation: Place the SQL database on a separate, highly available cluster.