VMware VCM 5.3 Uživatelský manuál stáhnout pdf (Strana 16)

Windows 7 Operating System Optimization

Deploying Microsoft Windows 7 Virtual Desktops with VMware View Applied Best Practices

VMware optimizations

The Windows boot process creates a brief period of extremely heavy read activity while the OS

is loaded into memory. During the boot process, Windows loads drivers, fonts, applications,

processes, and other runtime components. Each component, driver, service, and application

loaded represents IOs that must be serviced from the backend storage.

VMware View allows for both persistent and non-persistent (or floating pool) desktop pool types.

Persistent pools map users to unique a unique desktop which remains assigned to that user until

the desktop is deleted. For these types of desktops, maintain features that help maintain

personality of the desktop, such as search history, browser cookies, and other personalized

information.

For non-persistent or floating pools, users are not assigned unique desktops and the desktops are

deleted after a single use. In this case, there is no need to maintain any user state information on

the virtual desktop at all and more aggressive methods can be used to reduce the I/O footprint of

the virtual desktop. For non-persistent pools EMC recommends enforcing domain policies

through LPOs set in the master image.

Managing large VDI deployments at scale requires effectively using tools available to the domain

administrator. For persistent pools, many of these settings can be applied by binding GPOs to the

organizational units (OU) containing the virtual desktops. This can be done using the Group

Policy Management Console. For the examples provided this chapter, it is assumed that all

desktops are contained in an OU named VMware_View.

Each optimization in this chapter will be recommended for one or both types of desktop pools in

order to provide a good balance of user personalization and performance for the virtual desktop.

The optimizations will be recorded as follows:

• [A] – Both persistent and non-persistent pools

• [NP] – Recommended for non-persistent (floating) pools

Install VMware tools [A]

Install the latest version of VMware tools to ensure that the virtual desktops are running the latest

drivers. These drivers should be a part of the base image. You can also update VMware tools

post-deployment with VMware Update Manager.

Windows optimizations

This section provides instructions for modifying Window features to increase performance.

Disable error reporting [NP]

When an application or an OS crashes, Windows compiles error reports and attempts to contact

Microsoft to debug the issue. Typically, users can safely disable error reporting.

To disable error reporting by using a group policy object,

1. Edit the VMware_View G

PO.

2. S

elect Computer Configuration > Policies > Administrative Templates > Windows

Components > Windows Error Reporting.

3. Set Disable Windows Error Reporting to Enabled.

Disable automatic updates [NP]

The preferred method of updating virtual desktops is to update the master image and create new

virtual desktops from the updated master. This method provides a measure of change control and

limits the extreme I/O overhead potentially caused by “patch Tuesday” or other events that cause

the entire desktop population to simultaneously download and apply updates.

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