Duty Duty Redundancy Operation

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Originally published on Geo SCADA Knowledge Base by Anonymous user | June 10, 2021 12:55 AM

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When duty-duty mode is enabled on a pair of redundant servers, the general principles of operation for the different data types are as follows:

Configuration changes on the main always supersede any configuration changes that have been made to the standby.

Data updates from the standby are merged with the main, so for the current value of each point object in the database, the main takes the most recent update from the main or standby.

Historic files on the standby that are different to the main are merged with the main files before being transferred back to the standby.

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