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Creating Hyper-V VMs with Powershell

This month’s T-SQL Tuesday is hosted by Rob Sewell (b|t) and surprise, surprise, it focuses on Powershell ?? so I thought I’d write a quick post on how I’ve streamlined a pretty much weekly task that I perform, creating VMs.

I’m constantly spinning up VMs and then blowing them away. Ok, using the Hyper-V GUI isn’t too bad but when I’m creating multiple machines it can be a bit of a pain.

So here’s the details on the script I’ve written, hopefully it could be of some use to you too.

First check that your machine has the Hyper-V powershell module installed: –

Get-Module

If it’s not installed, you can either enable through the GUI: –

Or via script: –

Install-WindowsFeature -Name Hyper-V-PowerShell

N.B. – You won’t need to do this if, like me, you’re working with Hyper-V Server 2012 R2

Then you’re good to go creating VMs! All you need is the ISO for the OS that you want the machine to run.

Here’s the code: –

$BootDevice     = Read-Host -Prompt "Set VM boot device"
$ServerName     = Read-Host -Prompt "Enter VM Name"
$VMGeneration   = Read-Host -Prompt "Enter VM Generation"
[int]$VMMemoryGB= Read-Host -Prompt "Set VM Memory (GB)"
$VMCPU          = Read-Host -Prompt "Set Number of CPUs"
$NetworkAdapter = Read-Host -Prompt "Set Network Adapter"
$VHDPath        = Read-Host -Prompt "Set VHD Path"
[int]$VHDSizeGB = Read-Host -Prompt "Set VHD Size (GB)" 
$SecureBoot     = Read-Host -Prompt "Secure Boot On/Off"
$ISOPath        = Read-Host -Prompt "Set ISO Path"


$VMMemory  = ((($VMMemoryGB*1024)*1024)*1024)
$VHDSize   = ((($VHDSizeGB*1024)*1024)*1024)


New-VM -BootDevice $BootDevice -Name $ServerName -Generation $VMGeneration -MemoryStartupBytes $VMMemory -SwitchName $NetworkAdapter -NewVHDPath $VHDPath -NewVHDSizeBytes $VHDSize

Set-VMProcessor $ServerName -Count $VMCPU

Set-VMFirmware -VMName $ServerName -EnableSecureBoot $SecureBoot

Set-VMDvdDrive -VMName $ServerName -Path $ISOPath

Either copy the script here or download it from my GitHub.

Now, I’ve got this saved on my Hyper-V host as CreateNewVM.ps1 and I execute it through a remote powershell session. Here it is in action: –

Thanks for reading!


The DBA Who Came In From The Cold

I’m Andrew Pruski and I am a SQL Server DBA with 5 years experience in database development and administration.

The online SQL Server community has helped me out immensely throughout my career, whether from providing reference material in blog posts, or answering my (sometimes obscure) questions on forums. So, to try and say thank you, I would like to contribute my own experiences in the hope that they could benefit someone out there.

So here’s my general ramblings and thoughts about working as a SQL Server DBA.

You can find me on twitter @DBAFromTheCold

If you have any feedback on my blog please send me an email to dbafromthecold@gmail.com.

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