Configure Datastore alarms

There are five pre-configured datastore alarms that ship with vSphere 5

To create a Datastore alarm

• Right click on the vCenter icon in the vClient and select Alarm > Add Alarm
• Click the Drop Down on Alarm Type and Select Datastores
• You have 2 choices to monitor – Select your preference
• Monitor for specific conditions or state, for example, CPU usgae, power state
• Monitor for specific events occurring on this object, for example, VM powered on
• Tick Enable this alarm

• Click Triggers
• Click Add
• Under Trigger Type, you can see several triggers associated with this alarm
• Choose Datastore Disk Usage

• Click the Drop Down on Condition and select Is above or Is below
• Click the Drop Down on Warning and select 75% or change as required
• Click the Drop Down on Condition length and set as required. Sometimes it will not let you set this if it is not relevant
• Click the Drop Down on Warning and select 90% or change as required
• At the bottom of the screen there are 2 options. Choose the one you require
• Trigger if any of the conditions are satisfied
• Trigger if all of the conditions are satisfied
• Click the Reporting tab
• Under Range there is an option Repeat triggered alarm when the condition exceeds this range

A 0 value triggers and clears the alarm at the threshold point you configured. A non-zero value triggers the alarm only after the condition reaches an additional percentage above or below the threshold point.
Condition threshold + Reporting Tolerance = trigger alarmTolerance values ensure you do not transition alarm states based on false changes in a condition

• Under Frequency there is an option Repeat triggered alarms every

The frequency sets the time period during which a triggered alarm is not reported again. When the time period has elapsed, the alarm will report again if the condition or state is still true

• Click the Actions tab
• Click Add
• Click the Drop Down box on Action and Select Send a notification email

• If you chose Send a notification email or Send a notification trap as the alarm action, make sure the notification settings are configured for vCenter Server
• Double click Configuration and enter an email address
• In the next boxes are the alarm status triggers. Set a frequency for sending an email each time the triggers occur

Click OK to Finish