Enable/Disable Changed Block Tracking (CBT) on VMware Virtual Machines

Disable-VmCbt.ps1

# Disable CBT on virtual machines
$vms = (Get-VM | Get-View).Where{$_.ChangeTrackingEnabled -match 'True'}.Name

foreach ($vm in $vms) {
    $vm_view = Get-vm $vm | get-view
    $vm_config_spec = New-Object VMware.Vim.VirtualMachineConfigSpec
    $vm_config_spec.changeTrackingEnabled = $false
    $vm_view.reconfigVM($vm_config_spec)
    $snap = New-Snapshot (Get-VM $vm) -Name "Disable CBT"
    $snap | Remove-Snapshot -confirm:$false
}

Enable-VmCbt.ps1

# Enable CBT on virtual machines
$vms = (Get-VM | Get-View).Where{$_.ChangeTrackingEnabled -notmatch 'True'}.Name

foreach ($vm in $vms) {
    $vm_view = Get-vm $vm | get-view
    $vm_config_spec = New-Object VMware.Vim.VirtualMachineConfigSpec
    $vm_config_spec.changeTrackingEnabled = $true
    $vm_view.reconfigVM($vm_config_spec)
    $snap = New-Snapshot (Get-VM $vm) -Name "Enable CBT"
    $snap | Remove-Snapshot -confirm:$false
}

Get-VmCbtStatus.ps1

# Get virtual machine changed block tracking status
Get-VM | Get-View | select Name, @{n='ChangeTrackingEnabled'; e={$_.Config.ChangeTrackingEnabled}} |
  sort ChangeTrackingEnabled, Name