Merge pull request #269746 from nolavime/patch-168

Update log-alert-rule-health.md

Author: prmerger-automator[bot]

articles/azure-monitor/alerts/log-alert-rule-health.md

@@ -52,7 +52,9 @@ This table describes the possible resource health status values for a log search
 | Resource health status | Description |Recommended steps|
 |---|---|
 |Available|There are no known issues affecting this log search alert rule.|     |
-|Unknown|This log search alert rule is currently disabled or in an unknown state.|[Log alert was disabled](alerts-troubleshoot-log.md).|
+|Unknown|This log search alert rule is currently disabled or in an unknown state.|Check if this log alert rule has been disabled - Reasons why [Log alert was disabled](alerts-troubleshoot-log.md). 
+If your rule runs less frequently than every 15 minutes (30 minutes, 1 hour, etc.), it won’t provide health status updates. Therefore, be aware that an ‘unavailable’ status is to be expected and is not indicative of an issue.
+If you would like to get health status the frequency should be 15 min or less.|
 |Unknown reason|This log search alert rule is currently unavailable due to an unknown reason.|Check if the alert rule was recently created. Health status is updated after the rule completes its first evaluation.|
 |Degraded due to unknown reason|This log search alert rule is currently degraded due to an unknown reason.|     |
 |Setting up resource health|Setting up Resource health for this resource.|Check if the alert rule was recently created. Health status is updated after the rule completes its first evaluation.|