Disabling the Windows registry backup feature, RegIdleBackup, can minimize the number of system writes and reduce the growth of linked-clone machines.


  1. In vSphere Client, select the parent virtual machine and select Open Console.
  2. Log in to the Windows 7 or Windows 8 guest operating system as an administrator.
  3. Click Start > Control Panel > System and Security > Administrative Tools.
  4. Select Task Scheduler and click Open.
  5. In the left pane, expand Task Scheduler Library, Microsoft, Windows.
  6. Double-click Registry and select RegIdleBackup.
  7. In the Actions pane, click Disable.