Getting More Information About You Cluster LUN’s

Method 1

This method is fully supported by Microsoft and is relatively strait forward.
Step 1: Import the FailoverClusters module into your PowerShell Window  
              Import-Module FailoverClusters
Step 2: Get the CSV object your interested in using the Get-ClusterSharedVolume cmdlet
              $csv = Get-ClusterSharedVolume –Name “MyCSV”
Step 3: Get the Cluster Parameters for the CSV object using Get-ClusterParameter
              $CSVParams = Get-ClusterParameter -InputObject $csv
Step 4: Filter to get just the DiskIdGuid 
              ($CSVParams | Where-object -FilterScript {$_.Name -eq "DiskIdGuid"}).Value
Ok now you’ve got the GUID for the LUN it will be something like {32443078-9afc-4c0a-b142-466f8f564051}.
Step 5: Start diskpart.exe
Step 6: Start iterating over disks using select disk and then uniqueid disk until you match the GUID’s. It will look like this: 
C:\Users\taylorb>diskpart.exe
Microsoft DiskPart version 6.1.7601
Copyright (C) 1999-2008 Microsoft Corporation.
On computer: 37-4611K2713G
DISKPART> select disk 1
Disk 1 is now the selected disk.
DISKPART> uniqueid disk
Disk ID: {F1B5319E-FF92-40BB-9BC9-D5FFAD0AD66B}
DISKPART> select disk 2
Disk 2 is now the selected disk.
DISKPART> uniqueid disk
Disk ID: {32443078-9AFC-4C0A-B142-466f8f564051}


Step 7: Once you find the disk you want you can use the detail disk command to get more information.  It will look like this:

DISKPART> detail disk
IBM 2810XIV  Multi-Path Disk Device
Disk ID: {32443078-9AFC-4C0A-B142-466f8f564051}
Type   : FIBRE
Status : Reserved
Path   : 0
Target : 1
LUN ID : 2
Location Path : UNAVAILABLE
Current Read-only State : No
Read-only  : No
Boot Disk  : No
Pagefile Disk  : No
Hibernation File Disk  : No
Crashdump Disk  : No
Clustered Disk  : Yes
There are no volumes.

Method 2

Again I must reiterate this is not an officially supported API it has no warrantee – it may break at any time and Microsoft Support can not and will not help you with it.  Now that the disclaimer is over – in this example I am using the VDS api’s to do the mapping for me.

Script:-
 
#Load the Microsoft Storage VDS Library
#This is an undocumented, unsupported library, there is no warrantee nor gaurantees. [System.Reflection.Assembly]::LoadWithPartialName("Microsoft.Storage.Vds") | Out-Null $VdsServiceLoader = New-Object Microsoft.Storage.Vds.ServiceLoader $VdsService = $VdsServiceLoader.LoadService($null) $VdsService.WaitForServiceReady() $VdsService.Reenumerate()
#Build up a collection of all disks presented to the os $Disks = ($VdsService.Providers |% {$_.Packs}) |% {$_.Disks}
#Import the FailoverClusters module Import-Module FailoverClusters
#Retreve all of the CSV Lun’s $AllCSVs = Get-ClusterSharedVolume foreach ($Csv in $AllCSVs)
{
    $CSVParams = Get-ClusterParameter -InputObject $Csv
    
    #Retreve the DiskIDGuid Object from the Cluster Parameters $DiskGUIDString = ($CSVParams | Where-object -FilterScript {$_.Name -eq "DiskIdGuid"}).Value
    
    #Match up the DiskID’s $Disk = ($Disks | Where-Object -FilterScript {$_.DiskGuid -eq $DiskGUIDString})
        Write-Host "CSV ClusterResourceName: " $Csv.Name
        Write-Host "DiskID: " $DiskGUIDString
        Write-Host "DiskFriendlyName: " $Disk.FriendlyName
        Write-Host "DiskName: " $Disk.Name
        Write-Host "DiskAddress: " $Disk.DiskAddress
        Write-Host
}

Sample Output

 Windows PowerShell
Copyright (C) 2009 Microsoft Corporation. All rights reserved.
PS C:\Users\taylorb>.\GetCSVDevInfo1.ps1
CSV ClusterResourceName:  Cluster_CSV1_IBMXIV
DiskID:  {32443078-9afc-4c0a-b142-466f8f564051}
DiskFriendlyName:  IBM 2810XIV  Multi-Path Disk Device
DiskName:  \\?\PhysicalDrive2
DiskAddress:  Port1Path0Target1Lun2
CSV ClusterResourceName:  Cluster_CSV2_IBMXIV
DiskID:  {ee36e403-75cb-4e23-87b4-e82af7949f4e}
DiskFriendlyName:  IBM 2810XIV  Multi-Path Disk Device
DiskName:  \\?\PhysicalDrive3
DiskAddress:  Port1Path0Target1Lun3
CSV ClusterResourceName:  Cluster_CSV3_IBMXIV
DiskID:  {5db28bcb-6ed3-4b80-b363-861a25cc10e4}
DiskFriendlyName:  IBM 2810XIV  Multi-Path Disk Device
DiskName:  \\?\PhysicalDrive4
DiskAddress:  Port1Path0Target1Lun4