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Pool Used Bytes Monitor

Microsoft.SystemCenter.VirtualMachineManager.Storage.Pool.Threshold.Monitor (UnitMonitor)

Pool Used Bytes Monitor.

Knowledge Base article:

Summary

This monitor indicates if the thin provisioning soft threshold is reached.

Causes

An error state for this monitor indicates that the thin provisioning soft threshold is reached.

Resolutions

In Windows Server 2019+, space reclamation can be triggered by file deletion, a file system level trim or a storage operation.

Element properties:

TargetMicrosoft.SystemCenter.VirtualMachineManager.Storage.VMHostDisk
Parent MonitorSystem.Health.AvailabilityState
CategoryAvailabilityHealth
EnabledTrue
Alert GenerateFalse
Alert Auto ResolveTrue
Monitor TypeMicrosoft.Windows.SingleEventLogManualReset2StateMonitorType
RemotableTrue
AccessibilityPublic
RunAsDefault

Source Code:

<UnitMonitor ID="Microsoft.SystemCenter.VirtualMachineManager.Storage.Pool.Threshold.Monitor" Accessibility="Public" Enabled="true" Target="SL!Microsoft.SystemCenter.VirtualMachineManager.Storage.VMHostDisk" ParentMonitorID="Health!System.Health.AvailabilityState" Remotable="true" Priority="Normal" TypeID="Windows!Microsoft.Windows.SingleEventLogManualReset2StateMonitorType" ConfirmDelivery="false">

  <Category>AvailabilityHealth</Category>

  <OperationalStates>

    <OperationalState ID="Error" MonitorTypeStateID="EventRaised" HealthState="Error"/>

    <OperationalState ID="Success" MonitorTypeStateID="ManualResetEventRaised" HealthState="Success"/>

  </OperationalStates>

  <Configuration>

    <ComputerName>$Target/Host/Host/Property[Type="Windows!Microsoft.Windows.Computer"]/NetworkName$</ComputerName>

    <LogName>System</LogName>

    <Expression>

      <And>

        <Expression>

          <RegExExpression>

            <ValueExpression>

              <XPathQuery>EventDisplayNumber</XPathQuery>

            </ValueExpression>

            <Operator>MatchesRegularExpression</Operator>

            <!--144|145 and 146|147 are not aplicable to pool-->

            <Pattern>^(148|149)$</Pattern>

          </RegExExpression>

        </Expression>

        <Expression>

          <SimpleExpression>

            <ValueExpression>

              <XPathQuery Type="String">PublisherName</XPathQuery>

            </ValueExpression>

            <Operator>Equal</Operator>

            <ValueExpression>

              <Value Type="String">disk</Value>

            </ValueExpression>

          </SimpleExpression>

        </Expression>

        <Expression>

          <SimpleExpression>

            <ValueExpression>

              <XPathQuery Type="String">Params/Param[0]</XPathQuery>

            </ValueExpression>

            <Operator>Equal</Operator>

            <ValueExpression>

              <Value Type="String">$Target/Property[Type="System!System.Entity"]/DisplayName$</Value>

            </ValueExpression>

          </SimpleExpression>

        </Expression>

      </And>

    </Expression>

  </Configuration>

</UnitMonitor>