Unknown State

Microsoft.SQLServerAppliance.PDW2.StorageExternal.StorageStateMonitor.Unknown (UnitMonitor)

This monitor detects if Storage Component is in Unknown state.

Knowledge Base article:

Summary

The storage array is reporting an unknown warning. The storage system might be experiencing an issue that will degrade performance.

Causes

The storage system might be experiencing an issue and raised this status value.

For more details, view the storage_global_status property in the PDW Admin Console or query the sys.dm_pdw_component_health_status DMV.

Resolutions

Contact Microsoft Support and provide them with the alert name and details.

To diagnose this issue:

1) Microsoft Support will require Windows administrator access to the affected PDW Host node in order to access the vendor’s integrated system user interface for the storage processor in question.

2) Use the PDW Admin Console or health DMVs to view the current values for the properties of the storage enclosure.

To resolve this issue, Microsoft Support will contact the vendor’s hardware support team. Depending on the problem, the vendor might require physical access to the appliance to replace one or more hard disks.

Element properties:

Target

Microsoft.SQLServerAppliance.PDW2.StorageExternal.Storage

Parent Monitor

System.Health.AvailabilityState

Category

AvailabilityHealth

Enabled

True

Alert Generate

True

Alert Severity

Warning

Alert Priority

Normal

Alert Auto Resolve

True

Monitor Type

Microsoft.SQLServerAppliance.PDW2.ComponentTwoStateType

Remotable

True

Accessibility

Public

Alert Message

External Storage has UNKNOWN status

Appliance Name: {0}
Node Name: {1}
Component: {2}
Component Details: https://{3}/Topology/NodeDetails/{4}?compId={5}

RunAs

Default

Source Code:

<UnitMonitor ID="Microsoft.SQLServerAppliance.PDW2.StorageExternal.StorageStateMonitor.Unknown" Accessibility="Public" Enabled="true" Target="PDWLibrary!Microsoft.SQLServerAppliance.PDW2.StorageExternal.Storage" ParentMonitorID="Health!System.Health.AvailabilityState" TypeID="Microsoft.SQLServerAppliance.PDW2.ComponentTwoStateType" Remotable="true" Priority="Normal" ConfirmDelivery="false">

  <Category>AvailabilityHealth</Category>

  <AlertSettings AlertMessage="Microsoft.SQLServerAppliance.PDW2.StorageExternal.StorageStateMonitor.Unknown.AlertMessage">

    <AlertOnState>Warning</AlertOnState>

    <AutoResolve>true</AutoResolve>

    <AlertPriority>Normal</AlertPriority>

    <AlertSeverity>Warning</AlertSeverity>

    <AlertParameters>

      <AlertParameter1>$Target/Property[Type="PDWLibrary!Microsoft.SQLServerAppliance.PDW2.Component"]/ApplianceID$</AlertParameter1>

      <AlertParameter2>$Target/Property[Type="PDWLibrary!Microsoft.SQLServerAppliance.PDW2.Component"]/NodeName$</AlertParameter2>

      <AlertParameter3>$Target/Property[Type="System!System.Entity"]/DisplayName$</AlertParameter3>

      <AlertParameter4>$Target/Property[Type="PDWLibrary!Microsoft.SQLServerAppliance.PDW2.Component"]/ApplianceNetworkAddress$</AlertParameter4>

      <AlertParameter5>$Target/Property[Type="PDWLibrary!Microsoft.SQLServerAppliance.PDW2.Component"]/NodeID$</AlertParameter5>

      <AlertParameter6>$Target/Property[Type="PDWLibrary!Microsoft.SQLServerAppliance.PDW2.Component"]/ID$</AlertParameter6>

    </AlertParameters>

  </AlertSettings>

  <OperationalStates>

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

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

  </OperationalStates>

  <Configuration>

    <IntervalSeconds>900</IntervalSeconds>

    <SyncTime/>

    <TimeoutSeconds>600</TimeoutSeconds>

    <ConnectionString>$Target/Property[Type="PDWLibrary!Microsoft.SQLServerAppliance.PDW2.Component"]/ApplianceID$</ConnectionString>

    <NodeName>$Target/Property[Type="PDWLibrary!Microsoft.SQLServerAppliance.PDW2.Component"]/NodeName$</NodeName>

    <GroupName>$Target/Property[Type="PDWLibrary!Microsoft.SQLServerAppliance.PDW2.Component"]/GroupName$</GroupName>

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

    <MonitoredState>Unknown</MonitoredState>

  </Configuration>

</UnitMonitor>