# Tag Values for Alarming on Redudancy

**URL:** <https://forum.inductiveautomation.com/t/tag-values-for-alarming-on-redudancy/15750>\
**Category:** Ignition\
**Created:** [October 23, 2017, 3:13pm UTC](https://forum.inductiveautomation.com/t/tag-values-for-alarming-on-redudancy/15750 "2017-10-23T15:13:04Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![kruse.andrew](https://avatars.discourse-cdn.com/v4/letter/k/919ad9/32.png) [@kruse.andrew](https://forum.inductiveautomation.com/u/kruse.andrew)\
**Post date:** [October 23, 2017, 3:13pm UTC](https://forum.inductiveautomation.com/t/tag-values-for-alarming-on-redudancy/15750/1 "2017-10-23T15:13:04Z")

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> [@Alerting On Redundant System](http://forum.inductiveautomation.com/t/alerting-on-redundant-system/4232):
>
> We have a redundant 7.3.2 system and our customer wants an alert email when the Master server falls over. What is the best tag to set up, ie. there are a number of system tags under the redundancy section (ActivityLevel, IsActive, IsMaster, Role), but how do these behave if the master falls over. Does the Role = Backup , IsMaster = 0 and IsActive = 1 If so then can I do an expression tag based on this condition to send out an alert email.

What is the values for these tags when the redundant system becomes active?