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Disk Cache is Performing Poorly

Microsoft.OfficeWebAppsServer_Custom.DiskCacheIsPerformingPoorly (UnitMonitor)

The on disk cache of rendered files is performing poorly. The disk cache configuration may need to be adjusted or there may be a hardware issue.

Knowledge Base article:

Summary

To get the most current Knowledge Article from the Microsoft TechNet site, visit:

http://go.microsoft.com/fwlink/p/?LinkId=258820

Causes

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View Alerts

Element properties:

TargetMicrosoft.OfficeWebAppsServer_Custom.Machine
Parent MonitorSystem.Health.PerformanceState
CategoryPerformanceHealth
EnabledTrue
Instance NameOffice Web Apps - Storage
Counter NameWacDiskCacheTTLHours
Frequency60
Alert GenerateTrue
Alert SeverityWarning
Alert PriorityLow
Alert Auto ResolveTrue
Monitor TypeSystem.Performance.ThresholdMonitorType
RemotableTrue
AccessibilityPublic
Alert Message
Disk Cache is Performing Poorly
RunAsDefault

Source Code:

<UnitMonitor ID="Microsoft.OfficeWebAppsServer_Custom.DiskCacheIsPerformingPoorly" Accessibility="Public" Enabled="onEssentialMonitoring" Target="Microsoft.OfficeWebAppsServer_Custom.Machine" ParentMonitorID="Health!System.Health.PerformanceState" Remotable="true" Priority="Normal" TypeID="Performance!System.Performance.ThresholdMonitorType" ConfirmDelivery="false">

  <Category>PerformanceHealth</Category>

  <AlertSettings AlertMessage="Microsoft.OfficeWebAppsServer_Custom.DiskCacheIsPerformingPoorly_AlertMessageResourceID">

    <AlertOnState>Warning</AlertOnState>

    <AutoResolve>true</AutoResolve>

    <AlertPriority>Low</AlertPriority>

    <AlertSeverity>Warning</AlertSeverity>

  </AlertSettings>

  <OperationalStates>

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

    <OperationalState ID="UnderThreshold" MonitorTypeStateID="UnderThreshold" HealthState="Warning"/>

  </OperationalStates>

  <Configuration>

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

    <CounterName>WacDiskCacheTTLHours</CounterName>

    <ObjectName>Office Web Apps - Storage</ObjectName>

    <InstanceName>__total__</InstanceName>

    <AllInstances>false</AllInstances>

    <Frequency>60</Frequency>

    <Threshold>1</Threshold>

  </Configuration>

</UnitMonitor>