Create Multiple Disks on VM

PowerShell Help
1

Hello,

I have a basic script where I can create one disk on a VM. I’d like to be able to create multiple disk with different sizes and names. I’m unsure how to get started on this.

This is what I have so far:

[pre]

connect to Azure

Connect-AzAccount

Set-AzContext -Subscription “<sub_name>”

$rgName = “<rg_name>”
$vmName = “azr-tst-01”
$diskName = $vmName.Substring(0,12) + “_Data”

create the initial configuration

$diskConfig = New-AzDiskConfig `
-Location “EastUS2” `
-CreateOption Empty `
-DiskSizeGB 100

create the data disk

$dataDisk = New-AzDisk `
-ResourceGroupName $rgName `
-DiskName $diskName `
-Disk $diskConfig

get the VM where you want to add the data disk

$vm = Get-AzVM -ResourceGroupName $rgName `
-Name $vmName

add the data disk to the VM configuration

$vm = Add-AzVMDataDisk `
-VM $vm `
-Name $diskName `
-CreateOption Attach `
-ManagedDiskId $dataDisk.Id `
-Lun 1

update the VM

Update-AzVM -ResourceGroupName $rgName -VM $vm

prepare the data disks

#Get-AzDisk -DiskName $diskName | Where partitionstyle -EQ ‘raw’

[/pre]

 

Thanks,

Frank

2

You repeat lines 9-36 for each disk

3

A for loop as such (just an example) before 9 and after 36:

$disks = 4
$vmName = “azr-tst-01”
$diskName = $vmName.Substring(0,12) + “_Data”

for ($i=1; $i -le $disks; $i++) {
Write-Host $diskName $i
}

But how do I have a unique name for each disk? I’d like to add a special name like data, log, etc for each disk, not just a number.

 

4

Then you could create a loop for each of those names, or in the loop, have disk 1 be Data, 2 be logs and so on.
Example: IF ($I -eq 1) {$Diskname = Data}

5

Thanks for that!

i.e.)

[pre]

$disks = 4
$vmName = “azr-tst-01”
$diskName = $vmName.Substring(0,12) + ‘_00’

for ($i=1; $i -le $disks; $i++) {

if ($i -eq 1) {
Write-Host ($diskName + $i)
}
elseif ($i -eq 2) {
Write-Host ($diskname + $i)
}
else {
Write-Host “No more disks left”
}
}

[/pre]

How would you incorporate varying disk sizes?

6

This would be the loop, but I’m unsure how I incorporate the if statement:?

[pre]

for ($i=1; $i -le $numDisks; $i++) {

create the initial configuration

$diskConfig = New-AzDiskConfig `
-Location “EastUS2” `
-CreateOption Empty `
-DiskSizeGB 100

create the data disk

$dataDisk = New-AzDisk `
-ResourceGroupName $rgName `
-DiskName $diskName `
-Disk $diskConfig

get the VM where you want to add the data disk

$vm = Get-AzVM -ResourceGroupName $rgName `
-Name $vmName

add the data disk to the VM configuration

$vm = Add-AzVMDataDisk `
-VM $vm `
-Name $diskName `
-CreateOption Attach `
-ManagedDiskId $dataDisk.Id `
-Lun 1
}

[/pre]

7

It would probably be easier to create a csv file, and pull that as variables into your script.

$disks=(import-csv Disks.csv)
foreach ($disk in $disks){
your script logic
}