4.5

Table Of Contents
Procedure
1
In vSphere Client, select the parent virtual machine and select Open Console.
2 Log in to the Windows 7 guest operating system as an administrator.
3 Click Start > Control Panel > System and Security > Administrative Tools.
4 Select Services and click Open.
5 Double-click Diagnostic Policy Service.
6 In the Diagnostic Policy Service Properties (Local Computer) dialog, click Stop.
7 In the Startup type menu, select Disabled.
8 Click OK.
Disable the Prefetch and Superfetch Features on Windows 7 Virtual Machines
By disabling the Windows prefetch and superfetch features, you can avoid generating prefetch files and the
overhead associated with prefetch and superfetch operations. This action can reduce the growth of linked-
clone desktops and minimize IOPS on full virtual machines and linked clones.
To disable the prefetch and superfetch features, you must edit a Windows registry key and disable the Prefetch
service on the virtual machine.
Prerequisites
See the Microsoft TechNet Web site for information on how to use the Windows Registry Editor on Windows 7.
Procedure
1 Start the Windows Registry Editor on the local Windows 7 virtual machine.
2 Navigate to the registry key called PrefetchParameters.
The registry key is located in the following path: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control
\Session Manager\Memory Management\PrefetchParameters.
3 Set the EnablePrefetcher and EnableSuperfetch values to 0.
4 Click Start > Control Panel > System and Security > Administrative Tools.
5 Select Services and click Open.
6 Double-click the Superfetch service.
7 In the Superfetch Properties (Local Computer) dialog, click Stop.
8 In the Startup type menu, select Disabled.
9 Click OK.
Disable Windows Registry Backup on Windows 7 Virtual Machines
Disabling the Windows registry backup feature, RegIdleBackup, can minimize the number of system writes
and reduce the growth of linked-clone desktops.
Procedure
1 In vSphere Client, select the parent virtual machine and select Open Console.
2 Log in to the Windows 7 guest operating system as an administrator.
3 Click Start > Control Panel > System and Security > Administrative Tools.
4 Select Task Scheduler and click Open.
VMware View Administrator's Guide
60 VMware, Inc.