Powershell to Convert disk to StandardSSD_LRS in Azure

gistfile1.ps1

$diskName = 'yourDiskName'
$rgName = 'yourResourceGroupName'
$storageType = 'StandardSSD_LRS'

$disk = Get-AzureRmDisk -DiskName $diskName -ResourceGroupName $rgName

# Get parent VM resource
$vmResource = Get-AzureRmResource -ResourceId $disk.ManagedBy

# Stop and deallocate the VM before changing the storage type
Stop-AzureRmVM -ResourceGroupName $vmResource.ResourceGroupName -Name $vmResource.Name -Force

$vm = Get-AzureRmVM $vmResource.ResourceGroupName -Name $vmResource.ResourceName 

# Update the storage type
$diskUpdateConfig = New-AzureRmDiskUpdateConfig -AccountType $storageType -DiskSizeGB $disk.DiskSizeGB
Update-AzureRmDisk -DiskUpdate $diskUpdateConfig -ResourceGroupName $rgName `
-DiskName $disk.Name

Start-AzureRmVM -ResourceGroupName $vm.ResourceGroupName -Name $vm.Name