How do the baseline deviation rules work? (4376355)

• DBSS - Availability Group potential data loss baseline deviation
• DBSS - Availability Group estimated time for failover baseline deviation

These baseline deviation rules are evaluated once an hour, comparing the average of the relevant metric during that hour with what is the baseline for that hour.

If the value is not in the baseline range, it raises an alarm since the metric exceeds the environment's normal behavior.

The reason alarms are set to fire based on baseline and not a static threshold is that it is difficult to set a threshold that fits all environments. Having such alarm would require the user to set a different threshold per each environment.