Get Lun Number and disk letter using powershell

Question

Hi All,

Is there a way we can find out LUN number and Disk letter using a PowerShell script?

I tried Get-Disk,Get-Volume etc.but there seems to be nothing in common.

Thanks,
ACDBA

Answer 1

Hello there,

The following script can be used in PowerShell to get the Serial Number for either the physical or virtualized host:

Get the list of all available drives

$d = (Get-PSDrive).Name -match '^[a-z]$'
For each of the drivers, extract the serial number

get-partition -DriveLetter $i | get-disk

Complete working code

$d = (Get-PSDrive).Name -match '^[a-z]$'
Foreach ($i in $d)
{
Write-Host $i". " -nonewline
get-partition -DriveLetter $i | get-disk
}

Similar discussion here https://social.technet.microsoft.com/Forums/office/en-US/5b4a7b5b-b1e1-4296-a8c4-762bd2eeef83/powershell-script-to-get-disk-uniqueid-and-drive-letter?forum=winserverpowershell

Hope this resolves your Query !!

--If the reply is helpful, please Upvote and Accept it as an answer–

Answer 2

Yes, you can use the PowerShell cmdlet Get-Disk to list the disks on a system, and Get-Partition to list the partitions on a disk. You can then use the Number property of the Partition object to get the LUN number and the DriveLetter property to get the drive letter.

Here is an example of how you can use these cmdlets to get the LUN number and drive letter for all disks and partitions on a system:

$disks = Get-Disk  
foreach ($disk in $disks)  
{  
    $partitions = Get-Partition -DiskNumber $disk.Number  
    foreach ($partition in $partitions)  
    {  
        Write-Output "LUN Number: $($partition.Number)"  
        Write-Output "Drive Letter: $($partition.DriveLetter)"  
    }  
}  
  

This will output the LUN number and drive letter for each partition on each disk. You can also use the -FriendlyName and -Description properties of the Disk object to get more information about the disks.

Answer 3

Hi Rich,

Thanks for your time. But i am unable to get the results. LUN value is empty. This is an azure IAAS VM.

![271370-capture.jpg][2] [2]: /api/attachments/271370-capture.jpg?platform=QnA

Also i dont get results for $partition.Number..But $partition.PartitionNumber.But it seems to be wrong.

I am not sure how the disks are configured.

Get-Disk

Number Friendly Name Serial Number HealthStatus OperationalStatus Total Size Partition
Style

---

0 Msft Virtual Disk Healthy Online 120 GB GPT
2 Msft Virtual Disk Healthy Online 15 GB GPT
1 Msft Virtual Disk Healthy Online 300 GB GPT

Get-Partition

DiskPath: \?\scsi#disk&ven_msft&prod_virtual_disk#000000#{1234567890}

PartitionNumber DriveLetter Offset Size Type

---

---

1 1048576 450 MB Recovery
2 472907776 99 MB System
3 576716800 16 MB Reserved
4 C 593494016 119.45 GB Basic

DiskPath: \?\scsi#disk&ven_msft&prod_virtual_disk#000001

PartitionNumber DriveLetter Offset Size Type

---

---

1 17408 32 MB Reserved
2 Y 34603008 14.97 GB Basic

DiskPath: \?\scsi#disk&ven_msft&prod_virtual_disk#

PartitionNumber DriveLetter Offset Size Type

---

---

1 17408 128 MB Reserved
2 D 135266304 299.87 GB Basic

Answer 4

I am trying to corelate LUN's from the azure portal and LUN value inside the server.

Answer 5

Does the function Get-DiskScsiLun at this link help? powershell-function-to-get-disk-scsi-lun-number

The old "diskpart" tool can also get the LUN ID using these to get the information

select disk X  
detail disk X