Spontaneous historian stores outdated values when a server switch to a previously active server is done

• Related Articles

• FAQ: Historian configuration general recommendations

  1. Recommendation on hardware: Storage Memory CPU - SSD (Solid-State Drive). - Disk space capacity as detailed in the attached Excel sheet outputs. - RAM required to load the archive data is about 4 times greater the size of the respective ARX files. ...

• Spontaneous archives gets a new record when a switch StandBy Server to Primary server is done.  

  Summary When the switch is performed spontaneous archives gets a additional record. DescriptionWhen the switch is performed spontaneous archives gets a additional record. Solution A divergence in the timestamp producing in spontaneous archives only a ...

• Archive configuration for best SQL evacuation performance

  The time required to evacuate data to a database increases linearly with the number of insert SQL statements. In earlier zenon versions, recorded values were evacuated to the target database sequentially using single-insert statements. From zenon 11 ...

• FAQ: What are Installation and Security considerations of the zenon Smart Server and Smart Client?

  The attached document (English only) describes in some detail the specifics of the zenon Smart Server Application and the zenon Smart Client Application. Also a short explanation of security features and components is given. More information about ...

• Historian: At redundancy switch old value may be written again in new capsule

  Description In the Historian, when redundancy is triggered, values that are already contained in an archive capsule on server 1 are written again to a new archive capsule on server 2 with the same time stamps. These values should not be written to ...