Many emails are being sent regarding the VMWare ESX server total latency for disk access, though the latency levels are within acceptable levels.
Some customer environments may not experience significant issue with the latency levels that are defined in the default alarm thresholds.
Before changing alarm thresholds, confirm there is no degredation of service at the levels at which alarms are being generated.
1. Log into your Foglight server.
2. Navigate within the Dashboards drop down on the left to Administration | Rules & Notifications | Manage Registry Variables.
3. Click "Clear Filters" to ensure there are no cached filters applied to your view.
4. Enter into the Variable name field; "VMW:diskTotalLatency" (without double quotes)
5. You should see three Variables starting with the name you entered and ending with ".critical" ".fatal" and ".warning"
6. Click on the variable name you wish to edit to edit the value.
7. Adjust these thresholds higher to something that better fits the norms of your environment.
8. Click save for the field you have edited.
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