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KHI: Many Database Service unavailable

ManyDatabaseServices.DependsOn.DatabaseService.AvailabilityReverseRollup (DependencyMonitor)

A significant percentage of the databases within an Active Directory site '{0}' are dismounted.

Element properties:

TargetMicrosoft.Exchange.2010.Mailbox.ManyDatabaseServices
Parent MonitorSystem.Health.AvailabilityState
AlgorithmPercentage
Algorithm Parameter80
Source MonitorSystem.Health.AvailabilityState
RelationshipExchangeReverseRollup_Microsoft.Exchange.2010.Mailbox.ManyDatabaseServices.Contains.Microsoft.Exchange.2010.Mailbox.DatabaseService
CategoryAvailabilityHealth
EnabledTrue
Alert GenerateFalse
Alert Auto ResolveFalse
RemotableTrue
AccessibilityPublic
CommentEscalationTeam='HIGH AVAILABILITY'

Source Code:

<DependencyMonitor ID="ManyDatabaseServices.DependsOn.DatabaseService.AvailabilityReverseRollup" Accessibility="Public" Enabled="true" Target="Microsoft.Exchange.2010.Mailbox.ManyDatabaseServices" ParentMonitorID="SystemHealth!System.Health.AvailabilityState" Remotable="true" Priority="Normal" RelationshipType="ExchangeReverseRollup_Microsoft.Exchange.2010.Mailbox.ManyDatabaseServices.Contains.Microsoft.Exchange.2010.Mailbox.DatabaseService" MemberMonitor="SystemHealth!System.Health.AvailabilityState" Comment="EscalationTeam='HIGH AVAILABILITY'">

  <Category>AvailabilityHealth</Category>

  <Algorithm>Percentage</Algorithm>

  <AlgorithmParameter>80</AlgorithmParameter>

</DependencyMonitor>