# Ignition V7.3.9 Redundancy Issue

**URL:** <https://forum.inductiveautomation.com/t/ignition-v7-3-9-redundancy-issue/14292>\
**Category:** Ignition\
**Created:** [May 15, 2017, 12:09pm UTC](https://forum.inductiveautomation.com/t/ignition-v7-3-9-redundancy-issue/14292 "2017-05-15T12:09:11Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![focusengsk](https://avatars.discourse-cdn.com/v4/letter/f/46a35a/32.png) [@focusengsk](https://forum.inductiveautomation.com/u/focusengsk)\
**Post date:** [May 15, 2017, 12:09pm UTC](https://forum.inductiveautomation.com/t/ignition-v7-3-9-redundancy-issue/14292/1 "2017-05-15T12:09:11Z")

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Hi, our client appears to have an issue with the backup server (redundant server). it doesn’t appear to be configuring the opc-ua devices correctly. It is varying between number of devices listed and varies in the amount connected. For example, the master server has 6 connected devices, but the backup will show 0/4 connected, 2/4 connected, 0/2 connected…  
There doesn’t appear to be any error on the log file, we have rebooted each server.

This system has ran for 5 years or so without any issues, I’m not aware of any changes to either servers configuration, the ports are enabled for comms, and each server shows connected.

Anyone any ideas?