KHI: The current physical size of the database file is close to the maximum database size.

_88C639AC_64D0_4950_B615_FA0B2F08886D_ (UnitMonitor)

Knowledge Base article:

External Knowledge Sources

For more information, see the respective topic at the Microsoft Exchange Server TechCenter

Element properties:

TargetMicrosoft.Exchange.2010.Mailbox.DatabaseCopyPerformance
Parent MonitorSystem.Health.AvailabilityState
CategoryAvailabilityHealth
EnabledTrue
Alert GenerateFalse
Alert Auto ResolveTrue
Monitor TypeCorrelation.StatefulWindowsEventTimerMonitorType
RemotableTrue
AccessibilityPublic
RunAsDefault
CommentActionable='False';Urgent='False';EscalationTeam='Store'

Source Code:

<UnitMonitor ID="_88C639AC_64D0_4950_B615_FA0B2F08886D_" Enabled="onEssentialMonitoring" Target="Microsoft.Exchange.2010.Mailbox.DatabaseCopyPerformance" ParentMonitorID="SystemHealth!System.Health.AvailabilityState" Accessibility="Public" TypeID="Correlation.StatefulWindowsEventTimerMonitorType" Comment="Actionable='False';Urgent='False';EscalationTeam='Store'">
<Category>AvailabilityHealth</Category>
<OperationalStates>
<OperationalState ID="Success" MonitorTypeStateID="TimerEventRaised" HealthState="Success"/>
<OperationalState ID="Error" MonitorTypeStateID="EventRaised" HealthState="Error"/>
</OperationalStates>
<Configuration>
<MonitorType>KHI</MonitorType>
<VoteWeight>50</VoteWeight>
<ComputerName>.</ComputerName>
<LogName>Application</LogName>
<Expression>
<And>
<Expression>
<RegExExpression>
<ValueExpression>
<XPathQuery Type="UnsignedInteger">EventDisplayNumber</XPathQuery>
</ValueExpression>
<Operator>MatchesRegularExpression</Operator>
<Pattern>(9688|9689|9690)$</Pattern>
</RegExExpression>
</Expression>
<Expression>
<RegExExpression>
<ValueExpression>
<XPathQuery Type="String">PublisherName</XPathQuery>
</ValueExpression>
<Operator>MatchesWildcard</Operator>
<Pattern>MSExchangeIS*</Pattern>
</RegExExpression>
</Expression>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery Type="String">Params/Param[1]</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value Type="String">$Target/Property[Type='Microsoft.Exchange.2010.Component']/InstanceName$</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
</And>
</Expression>
<TimerWaitInSeconds>86400</TimerWaitInSeconds>
</Configuration>
</UnitMonitor>