manageDataDisk.ps1

# Version should be 6.3* indicating Windows Server 2012 R2
If ([System.Environment]::OSVersion.Version.ToString() -like "6.3*")
{
    # Windows Product Types. Script should only run on Server OS.
    # 1: Workstation 
    # 2: Domain Controller 
    # 3: Server 
    If ((Get-WmiObject Win32_OperatingSystem -ErrorAction SilentlyContinue).ProductType -eq 3)
    {
        $Disks = Get-PhysicalDisk -CanPool $true -ErrorAction SilentlyContinue
        If (@($Disks).Count -gt 0)
        {
            $StoragePoolName = "AzureDataDiskPool"
            $StoragePool = Get-StoragePool -FriendlyName $StoragePoolName -ErrorAction SilentlyContinue
            If (-not($StoragePool))
            {
                Try
                {
                    $StoragePool = New-StoragePool -StorageSubSystemFriendlyName *Spaces* -FriendlyName $StoragePoolName -PhysicalDisks $Disks
                    #$Columns = $Disks.Count
                    $Columns = 1
                    $Interleave = 256kb
                    $VirtualDisk = New-VirtualDisk -StoragePoolFriendlyName $StoragePool.FriendlyName -FriendlyName "AzureDataDisk" -ResiliencySettingName Simple -Interleave $Interleave -ProvisioningType Fixed -UseMaximumSize -NumberOfColumns $Columns
                    Get-Disk -UniqueId $VirtualDisk.UniqueId | Initialize-Disk -Confirm:$false -PassThru | New-Partition -AssignDriveLetter -UseMaximumSize | Format-Volume -FileSystem NTFS -AllocationUnitSize 64kb -Force -Confirm:$false
                }
                Catch
                {
                    Throw "Failed to add disk to new Storage Pool: $($_.Exception.Message)"
                }
            }
            else
            {
                Try
                {
                    Add-PhysicalDisk -StoragePool $StoragePool -PhysicalDisks $Disks | Out-Null
                    $StoragePool = Get-StoragePool -FriendlyName $StoragePool.FriendlyName
                    $VirtualDisk = Get-VirtualDisk -FriendlyName "AzureDataDisk"
                    $NewSize = ($VirtualDisk.Size)+(($StoragePool.Size)-($StoragePool.AllocatedSize))
                    $VirtualDisk = Resize-VirtualDisk -InputObject $VirtualDisk -Size $NewSize -PassThru
                    Update-HostStorageCache
                    $Disk = Get-Disk -UniqueId $VirtualDisk.UniqueId
                    $Partition = $Disk | Get-Partition | Sort-Object -Property Size -Descending | Select-Object -First 1
                    $NewPartitionSize = $Partition.Size + $Disk.LargestFreeExtent
                    Resize-Partition -InputObject $Partition -Size $NewPartitionSize -PassThru
                }
                Catch
                {
                    Throw "Failed to add disk to existing Storage Pool: $($_.Exception.Messsage)"
                }
            }
        }
    }
    else
    {
        Write-Output "Operatingsystem is not Server (ProductType = 3)."
    }
}
else
{
    Write-Output "Operatingsystem is not of version 6.3* (Windows Server 2012 R2)."
}