Administrator Guide

administrators to map the Ctrl+Alt+Del key combination of VDI applications to display the Ctrl+Alt+Del screen of the VDI application. If the

C-A-D tool is enabled, you can use the Ctrl+Alt+Del key combination for all VDI applications.

The Wyse Management Suite enables you to centrally congure, monitor, manage, and optimize your Wyse Software thin clients. To

manage the Wyse Software thin clients remotely you must register the devices to Wyse Management suite.

However, there are instances where administrators can retain the changed congurations after you log out and restart the Wyse Software

thin client.

Before conguring your Wyse Software thin clients, see

• Using the Unied Write Filter

• Using Dell Write Filter

• Understanding the NetXClean Utility

• Understanding the C-A-D tool

• Registering Wyse Software thin client to Wyse Management Suite

Unied Write Filter

Unied Write Filter (UWF) is a sector-based write lter that protects your storage media on a Windows 10 Enterprise device. UWF

intercepts all write attempts to a protected volume and redirects those write attempts to a virtual overlay. UWF improves the reliability and

stability of your device and improves system security since unauthorized changes to the system are discarded. In UWF, an overlay is a

virtual storage space that saves changes made to the underlying protected volumes. Any time the le system attempts to modify a

protected sector, UWF instead copies the sector from the protected volume to the overlay, and then modies the overlay instead. If an

application attempts to read from that sector, UWF returns the data from the overlay instead, so that the system maintains the appearance

of having written to the volume, while the volume remains unchanged.

CAUTION

: Please follow proper write lter and Windows Page File usage instructions at all times. Such instructions include

making sure that the write lter is enabled during regular use and is disabled only temporarily by an administrator when required

for image upgrades, applying security patches, registry changes and application installation. The write lter should be re-enabled

as soon as such tasks are completed. Such instructions further include never enabling the Windows Page File feature during

regular use of the thin client. Any operation of a Dell Wyse Windows Embedded Thin Client with the write lter turned o during

regular use and/or with the Windows Page le enabled will prematurely wear out your Flash/SSD storage, decrease performance

and decrease the lifespan of the product. Dell is not responsible for, and will not, warrant, support, repair or replace any thin

client device or component that fails to operate properly due to a failure to follow these instructions.

For more information, see the Unied Write Filter documentation at technet.microsoft.com.

Microsoft UWF can be congured to store the overlay either entirely on RAM (RAM-based), or store the overlay in a pre-allocated le on

the system volume (disk-based). In a disk-based overlay, UWF uses a pre-allocated le created on the system volume to increase the

available space for the overlay. Due to the availability of more disk space in PCs, Wyse Converter for PCs 2.x congures the UWF to store

the overlay in a pre-allocated le on the system volume (disk-based) and congures the size as per the following table:

Table 3. UWF disk overlay size

Disk size UWF disk overlay

Less or equal to 10 GB 2 GB

More than 10 GB 4 GB

More than 25 GB 8 GB

Using Unied Write Filter

About this task

To congure the Wyse Software thin client to use UWF, do the following:

Getting started