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Addin multiple disks on diffrent SCSI controllers via PowerCLI script

I am trying to create a Powercli script for adding additional disks to Sql vms. Scripts runs fine but the disks labels wont create evenly across multiple scsi controllers.

Ideally this is what I am trying to get.

Hard disk 1  on SCSI 0:1
Hard disk 2  on SCSI 0:2
Hard disk 3  on SCSI 1:1
Hard disk 4  on SCSI 1:2
Hard disk 5  on SCSI 2:1
Hard disk 6  on SCSI 2:2
Hard disk 7  on SCSI 3:1
Hard disk 8  on SCSI 3:2

Hard disk 9  on SCSI 3:3


But this is what I get.


Hard disk 7  on SCSI 0:1
Hard disk 2  on SCSI 0:2
Hard disk 8  on SCSI 1:1
Hard disk 6  on SCSI 1:2
Hard disk 9  on SCSI 2:1
Hard disk 4  on SCSI 2:2
Hard disk 10  on SCSI 3:1
Hard disk 5  on SCSI 3:2

Hard disk 3  on SCSI 3:3

_________________________________________________________________________


Here is my script.

$VMname = Read-Host " Enter the VM hostname"

$D=Read-Host "Enter D drive GB Size"

$E=Read-Host "Enter E drive GB Size"

$SYSTEMDBS1 = Read-Host "Enter SYSTEMDB1 GB Size"

$DATA1 = Read-Host "Enter DATA1 GB Size"

$LOGS1 = Read-Host "Enter LOGS1 GB Size"

$DBA_ADMIN_LOGS1 = Read-Host "Enter DBA_ADMIN_LOGS1 GB Size"

$TEMPDB1 = Read-Host "Enter TEMPDB1 GB Size"

$DBA_ADMIN_DATA1 = Read-Host "Enter DBA_ADMIN_DATA1 GB Size"

$DBAUTILITY = Read-Host "Enter DBAUTILITY GB Size"

stop-vm -vm $VMname -confirm:$false

Start-sleep -s 5

$VM= get-vm -Name $VMname

##Adding D and E Drive

New-HardDisk -VM  $VM -CapacityGB  $D -DiskType Flat -StorageFormat Thin

New-HardDisk -VM  $VM -CapacityGB  $E -DiskType Flat -StorageFormat Thin

foreach ($HardDisk in (1))

{

$VM | New-HardDisk  -CapacityGB   $SYSTEMDBS1  -DiskType Flat -StorageFormat Thin | New-ScsiController -Type ParaVirtual

##

$hdskToChange = Get-HardDisk -VM $VM -Name "Hard disk 4"

##$VM | Get-HardDisk -Name "Hard Disk 3"

## create a new VirtualMachineConfigSpec, with which to make the change to the VM's disk

$spec = New-Object VMware.Vim.VirtualMachineConfigSpec

## create a new VirtualDeviceConfigSpec

$spec.deviceChange = New-Object VMware.Vim.VirtualDeviceConfigSpec

$spec.deviceChange[0].operation = "edit"

## populate the "device" property with the existing info from the hard disk to change

$spec.deviceChange[0].device = $hdskToChange.ExtensionData

## then, change the second part of the SCSI ID (the UnitNumber)

$spec.deviceChange[0].device.unitNumber = 0

## reconfig the VM with the updated ConfigSpec (VM must be powered off)

$VM.ExtensionData.ReconfigVM_Task($spec)

Start-Sleep -s 5

New-HardDisk -VM  $VM -CapacityGB  $DATA1 -DiskType Flat -StorageFormat Thin -Controller "SCSI Controller 1"

}

## Disks on Controller 2

foreach ($HardDisk in (1))

{

$VM | New-HardDisk  -CapacityGB  $LOGS1 -DiskType Flat -StorageFormat Thin | New-ScsiController -Type ParaVirtual

##

$hdskToChange = Get-HardDisk -VM $VM -Name "Hard disk 6"

##$VM | Get-HardDisk -Name "Hard Disk 3"

## create a new VirtualMachineConfigSpec, with which to make the change to the VM's disk

$spec = New-Object VMware.Vim.VirtualMachineConfigSpec

## create a new VirtualDeviceConfigSpec

$spec.deviceChange = New-Object VMware.Vim.VirtualDeviceConfigSpec

$spec.deviceChange[0].operation = "edit"

## populate the "device" property with the existing info from the hard disk to change

$spec.deviceChange[0].device = $hdskToChange.ExtensionData

## then, change the second part of the SCSI ID (the UnitNumber)

$spec.deviceChange[0].device.unitNumber = 0

## reconfig the VM with the updated ConfigSpec (VM must be powered off)

$VM.ExtensionData.ReconfigVM_Task($spec)

Start-Sleep -s 5

New-HardDisk -VM  $VM -CapacityGB  $DBA_ADMIN_LOGS1 -DiskType Flat -StorageFormat Thin -Controller "SCSI Controller 2"

}

## For Disk on Controller 3

foreach ($HardDisk in (1))

{

$VM | New-HardDisk  -CapacityGB  $TEMPDB1 -DiskType Flat -StorageFormat Thin | New-ScsiController -Type ParaVirtual

##

$hdskToChange = Get-HardDisk -VM $VM -Name "Hard disk 8"

##$VM | Get-HardDisk -Name "Hard Disk 3"

## create a new VirtualMachineConfigSpec, with which to make the change to the VM's disk

$spec = New-Object VMware.Vim.VirtualMachineConfigSpec

## create a new VirtualDeviceConfigSpec

$spec.deviceChange = New-Object VMware.Vim.VirtualDeviceConfigSpec

$spec.deviceChange[0].operation = "edit"

## populate the "device" property with the existing info from the hard disk to change

$spec.deviceChange[0].device = $hdskToChange.ExtensionData

## then, change the second part of the SCSI ID (the UnitNumber)

$spec.deviceChange[0].device.unitNumber = 0

## reconfig the VM with the updated ConfigSpec (VM must be powered off)

$VM.ExtensionData.ReconfigVM_Task($spec)

Start-Sleep -s 5

New-HardDisk -VM  $VM -CapacityGB  $DBA_ADMIN_DATA1 -DiskType Flat -StorageFormat Thin -Controller "SCSI Controller 3"

New-HardDisk -VM  $VM -CapacityGB  $DBAUTILITY -DiskType Flat -StorageFormat Thin -Controller "SCSI Controller 3"

}

Start-sleep -s 2

## Start VM

Start-VM -VM $VM -confirm:$false

_____________________________________________________________________________________________________________________



Any help would be appreciated.


Thank You



9 Replies
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User Moderator
User Moderator

Not sure what you are trying to achieve with "foreach ($HardDisk in (1))" ?


Blog: lucd.info  Twitter: @LucD22  Co-author PowerCLI Reference

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Copied the script from a website and modified it. I am not a scripter, just tried to tweak the code with my small scripting knowledge.

This is what I am trying to get.

Hard disk 1  on SCSI 0:1
Hard disk 2  on SCSI 0:2
Hard disk 3  on SCSI 1:1
Hard disk 4  on SCSI 1:2
Hard disk 5  on SCSI 2:1
Hard disk 6  on SCSI 2:2
Hard disk 7  on SCSI 3:1
Hard disk 8  on SCSI 3:2

Hard disk 9  on SCSI 3:3


I would really appreciate if you could help me fixing my script.


Thank You

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Can anyone please help!!

Thank You

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Try it with the below code

$VMname = Read-Host " Enter the VM hostname"

$D=Read-Host "Enter D drive GB Size"

$E=Read-Host "Enter E drive GB Size"

$SYSTEMDBS1 = Read-Host "Enter SYSTEMDB1 GB Size"

$DATA1 = Read-Host "Enter DATA1 GB Size"

$LOGS1 = Read-Host "Enter LOGS1 GB Size"

$DBA_ADMIN_LOGS1 = Read-Host "Enter DBA_ADMIN_LOGS1 GB Size"

$TEMPDB1 = Read-Host "Enter TEMPDB1 GB Size"

$DBA_ADMIN_DATA1 = Read-Host "Enter DBA_ADMIN_DATA1 GB Size"

$DBAUTILITY = Read-Host "Enter DBAUTILITY GB Size"

stop-vm -vm $VMname -confirm:$false

Start-sleep -s 5

$VM= get-vm -Name $VMname

##Adding D and E Drive

New-HardDisk -VM  $VM -CapacityGB  $D -DiskType Flat -StorageFormat Thin

New-HardDisk -VM  $VM -CapacityGB  $E -DiskType Flat -StorageFormat Thin

New-HardDisk -VM  $VM -CapacityGB  $SYSTEMDBS1 -DiskType Flat -StorageFormat Thin

New-HardDisk -VM  $VM -CapacityGB  $DATA1 -DiskType Flat -StorageFormat Thin

New-HardDisk -VM  $VM -CapacityGB  $LOGS1 -DiskType Flat -StorageFormat Thin

New-HardDisk -VM  $VM -CapacityGB  $DBA_ADMIN_LOGS1 -DiskType Flat -StorageFormat Thin

New-HardDisk -VM  $VM -CapacityGB  $TEMPDB1 -DiskType Flat -StorageFormat Thin

New-HardDisk -VM  $VM -CapacityGB  $DBA_ADMIN_DATA1 -DiskType Flat -StorageFormat Thin

New-HardDisk -VM  $VM -CapacityGB  $DBAUTILITY -DiskType Flat -StorageFormat Thin

$hdds = $VM | Get-HardDisk

New-ScsiController -Type ParaVirtual -HardDisk $hdds[2,3]

New-ScsiController -Type ParaVirtual -HardDisk $hdds[4,5]

New-ScsiController -Type ParaVirtual -HardDisk $hdds[6,7,8]

Start-sleep -s 2

## Start VM

Start-VM -VM $VM -confirm:$false

consider awarding points if you find my answer helpful.

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Contributor
Contributor

Thanks Prakash, your script worked I see all disks on their SCSI controllers but SCSI # on the disk are not in sequence.

Hard disk 1  on SCSI 0:1
Hard disk 2  on SCSI 0:2
Hard disk 3  on SCSI 1:1
Hard disk 4  on SCSI 1:2
Hard disk 5  on SCSI 2:4
Hard disk 6  on SCSI 2:6
Hard disk 7  on SCSI 3:3
Hard disk 8  on SCSI 3:6

Hard disk 9  on SCSI 3:9


Thank YOu

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four years later I run into the same "problem" the SCSI # on the controller get out of order. Did anyone resolve this "issue"?

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User Moderator
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You might give the script in Solved: Script for attaching multiple existing ... |VMware Communities a try.

Afaik, you can only achieve this when using the API method.


Blog: lucd.info  Twitter: @LucD22  Co-author PowerCLI Reference

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What's happening is when you change the SCSI controller and/or target ID of a disk, it renames it to "Hard disk [X]," where [X] is the total number of disks. It also changes the ID number. The only thing that doesn't change is the Filename property. As such, every time you modify a disk you have to re-read the disks.

For example:

$VMObj = Get-VM -Name MyVM

Get-HardDisk -VM $VMObj | Select-Object -Property Name,Filename,Id,CapacityGB

Name        Filename                                        Id                         CapacityGB

----        --------                                        --                         ----------

Hard disk 1 [datastore_01] DharzhakTest/DharzhakTest.vmdk   VirtualMachine-vm-864/2000        128

Hard disk 2 [datastore_01] DharzhakTest/DharzhakTest_1.vmdk VirtualMachine-vm-864/2001         11

Hard disk 3 [datastore_01] DharzhakTest/DharzhakTest_2.vmdk VirtualMachine-vm-864/2002         12

Hard disk 4 [datastore_01] DharzhakTest/DharzhakTest_3.vmdk VirtualMachine-vm-864/2003         13

Hard disk 5 [datastore_01] DharzhakTest/DharzhakTest_4.vmdk VirtualMachine-vm-864/2004         14

Hard disk 6 [datastore_01] DharzhakTest/DharzhakTest_5.vmdk VirtualMachine-vm-864/2005         15

Hard disk 7 [datastore_01] DharzhakTest/DharzhakTest_6.vmdk VirtualMachine-vm-864/2006         16

Hard disk 8 [datastore_01] DharzhakTest/DharzhakTest_7.vmdk VirtualMachine-vm-864/2008         17

Hard disk 9 [datastore_01] DharzhakTest/DharzhakTest_8.vmdk VirtualMachine-vm-864/2009         18

If we were to modify the SCSI controller of “Hard disk 9” to change it from SCSI Controller 0 to SCSI Controller 1, the names would not change, because the last modified disk was already listed last.

However, if we modify “Hard Disk 2” to change it from SCSI Controller 0 to SCSI Controller 1, it would be renamed “Hard disk 9” and the ones currently named “Hard disk (3-9)” would be renamed to “Hard disk (2-8)”, accordingly.

So, back to the task at hand. Let's assume we're starting with all the disks on a single SCSI controller:

$VMObj = Get-VM -Name MyVM
$ScsiControllerObjs = Get-ScsiController -VM $VMObj

$DiskObjs = Get-HardDisk -VM $VMObj

$DiskAssignments  = @()

foreach ($DiskObj in $DiskObjs) {

    $DiskAssignments += "$($DiskObj.Name)  $($DiskObj.FileName)  $($ScsiControllerObjs.Where({$_.Key -eq $DiskObj.ExtensionData.ControllerKey}).Name):$($DiskObj.ExtensionData.UnitNumber)"

}

Write-Output $DiskAssignments

Hard disk 1  [datastore_01] DharzhakTest/DharzhakTest.vmdk  SCSI controller 0:0

Hard disk 2  [datastore_01] DharzhakTest/DharzhakTest_1.vmdk  SCSI controller 0:1

Hard disk 3  [datastore_01] DharzhakTest/DharzhakTest_2.vmdk  SCSI controller 0:2

Hard disk 4  [datastore_01] DharzhakTest/DharzhakTest_3.vmdk  SCSI controller 0:3

Hard disk 5  [datastore_01] DharzhakTest/DharzhakTest_4.vmdk  SCSI controller 0:4

Hard disk 6  [datastore_01] DharzhakTest/DharzhakTest_5.vmdk  SCSI controller 0:5

Hard disk 7  [datastore_01] DharzhakTest/DharzhakTest_6.vmdk  SCSI controller 0:6

Hard disk 8  [datastore_01] DharzhakTest/DharzhakTest_7.vmdk  SCSI controller 0:8

Hard disk 9  [datastore_01] DharzhakTest/DharzhakTest_8.vmdk  SCSI controller 0:9

If you modify them in the order of the file names, you should get the correct order. There's probably a more graceful way to do this, but you should get the gist of what's going on. This here will assign a new ParaVirtual SCSI controller to the 3rd, 5th and 7th disks and assign the subsequent disks to the new controller. After that, it uses the ReconfigVM_Task method, as needed, to specify the target ID number as the New-ScsiController and Set-HardDisk cmdlets may assign it randomly.

$VMObj = Get-VM -Name MyVM
# Put disk names in an array

$DiskNames = (Get-HardDisk -VM $VMObj).FileName

foreach ($I in 2,4,6) {

    # Assign Disk to new ParaVirtual SCSI controller

    $DiskObj = Get-HardDisk -VM $VMObj | Where-Object { $_.Filename -eq $DiskNames[$I] }

    $ScsiControllerObj = New-ScsiController -HardDisk $DiskObj -Type ParaVirtual -BusSharingMode NoSharing -Confirm:$false

    # Correct SCSI target ID from random assignment

    $DiskObj = Get-HardDisk -VM $VMObj | Where-Object { $_.Filename -eq $DiskNames[$I] }

    # If the Target ID is not 0, set it to 0

    if ($DiskObj.ExtensionData.UnitNumber -ne 0) {

        $NewSpec = New-Object -Type VMware.Vim.VirtualMAchineConfigSpec

        $NewSpec.DeviceChange = New-Object VMware.Vim.VirtualDeviceConfigSpec

        $NewSpec.DeviceChange[0].Operation = "edit"

        $NewSpec.DeviceChange[0].Device = $DiskObj.ExtensionData

        $NewSpec.DeviceChange[0].Device.UnitNumber = 0

        $VMObj.ExtensionData.ReconfigVM_Task($NewSpec)

    }

    # Assign subsequent Disk to new ParaVirtual SCSI controller

    $I++

    Start-Sleep 5

    $DiskObj = Get-HardDisk -VM $VMObj | Where-Object { $_.Filename -eq $DiskNames[$I] }

    Set-HardDisk -HardDisk $DiskObj -Controller $ScsiControllerObj -Confirm:$false

    # Correct SCSI target ID from random assignment

    $DiskObj = Get-HardDisk -VM $VMObj | Where-Object { $_.Filename -eq $DiskNames[$I] }

    # If the Target ID is not 1, set it to 1

    if ($DiskObj.ExtensionData.UnitNumber -ne 1) {

        $NewSpec = New-Object -Type VMware.Vim.VirtualMAchineConfigSpec

        $NewSpec.DeviceChange = New-Object VMware.Vim.VirtualDeviceConfigSpec

        $NewSpec.DeviceChange[0].Operation = "edit"

        $NewSpec.DeviceChange[0].Device = $DiskObj.ExtensionData

        $NewSpec.DeviceChange[0].Device.UnitNumber = 1

        $VMObj.ExtensionData.ReconfigVM_Task($NewSpec)

    }

    #Assign the last disk to the final controller

    if ($I -eq 7) {

        $I++

        Start-Sleep 5

        $DiskObj = Get-HardDisk -VM $VMObj | Where-Object { $_.Filename -eq $DiskNames[$I] }

        Set-HardDisk -HardDisk $DiskObj -Controller $ScsiControllerObj -Confirm:$false

        # Correct SCSI target ID from random assignment

        $DiskObj = Get-HardDisk -VM $VMObj | Where-Object { $_.Filename -eq $DiskNames[$I] }

        # If the Target ID is not 2, set it to 2

        if ($DiskObj.ExtensionData.UnitNumber -ne 2) {

            $NewSpec = New-Object -Type VMware.Vim.VirtualMAchineConfigSpec

            $NewSpec.DeviceChange = New-Object VMware.Vim.VirtualDeviceConfigSpec

            $NewSpec.DeviceChange[0].Operation = "edit"

            $NewSpec.DeviceChange[0].Device = $DiskObj.ExtensionData

            $NewSpec.DeviceChange[0].Device.UnitNumber = 2

            $VMObj.ExtensionData.ReconfigVM_Task($NewSpec)

        }

    }

}

After you run that, you can re-check the SCSI assignments and see that they're now in the desired order.

$VMObj = Get-VM -Name MyVM

$ScsiControllerObjs = Get-ScsiController -VM $VMObj

$DiskObjs = Get-HardDisk -VM $VMObj

$DiskAssignments  = @()

foreach ($DiskObj in $DiskObjs) {

    $DiskAssignments += "$($DiskObj.Name)  $($DiskObj.FileName)  $($ScsiControllerObjs.Where({$_.Key -eq $DiskObj.ExtensionData.ControllerKey}).Name):$($DiskObj.ExtensionData.UnitNumber)"

}

Write-Output $DiskAssignments

Hard disk 1  [datastore_01] DharzhakTest/DharzhakTest.vmdk  SCSI controller 0:0

Hard disk 2  [datastore_01] DharzhakTest/DharzhakTest_1.vmdk  SCSI controller 0:1

Hard disk 3  [datastore_01] DharzhakTest/DharzhakTest_2.vmdk  SCSI controller 1:0

Hard disk 4  [datastore_01] DharzhakTest/DharzhakTest_3.vmdk  SCSI controller 1:1

Hard disk 5  [datastore_01] DharzhakTest/DharzhakTest_4.vmdk  SCSI controller 2:0

Hard disk 6  [datastore_01] DharzhakTest/DharzhakTest_5.vmdk  SCSI controller 2:1

Hard disk 7  [datastore_01] DharzhakTest/DharzhakTest_6.vmdk  SCSI controller 3:0

Hard disk 8  [datastore_01] DharzhakTest/DharzhakTest_7.vmdk  SCSI controller 3:1

Hard disk 9  [datastore_01] DharzhakTest/DharzhakTest_8.vmdk  SCSI controller 3:2

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Hello Dharzhak,

thank you - worked like a charme.

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