Administrator Guide
This icon disables the lter and reboots the system.
3 Congure the Wyse Software thin client as per your requirements.
4 After you congure the Wyse Software thin client, to enable the Dell Write Filter, double-click the DWF Enable icon on the desktop.
This icon enables the lter and reboots the system. Your congurations on the Wyse Software thin client are now saved, and they are
no changes in the settings after you reboot the thin client.
Next steps
Dell Write Filter (DWF) starts automatically after the system starts.
You can add specic les or folders on a protected volume to a le exclusion list to exclude those les and folders from being ltered by
DWF using the Dell Wyse Write Control tool. To access the tool, click the Dell Write Filter icon in the system tray. When a le or folder is in
the exclusion protected volume, all writes to that le or folder bypass DWF ltering, and are written directly to the protected volume and
persist after the device restarts.
You must log in as an administrator to add or remove le or folder exclusions during run time, and you must restart the device for new
exclusions to take eect.
NOTE: File commit is not supported in Dell Write Filter.
Setting Dell Write Filter controls
To view and manage DWF control settings, use the Dell Write Filter Control dialog box. To open the dialog box, double-click the DWF icon
in the notication area of the administrator taskbar.
When you congure DWF control settings, some of the elds are unavailable. You can select from the list of available elds during
conguration.
The Dell Write Filter Control dialog box includes the following:
• DWF status
– Current Status—Displays the status of the File Based Write Filter. The status may either be Enabled or Disabled.
– Boot Command—Displays the status of the Boot Command. DWF_ENABLE means that the DWF is enabled for the next session;
and DWF_DISABLE means that the DWF is disabled for the next session.
– Overlay used by DWF—Displays the amount of overlay allocated to the File Based Write Filter in Mega bytes (MB) and
Percentage. If Current Status is disabled, overlay allocated to DWF is always zero (0).
– Amount of overlay used for DWF Cache—Displays the amount of overlay allocated to the File Based Write Filter cache for the
current session in Megabytes (MB).
– Warning #1 (%)—Displays the DWF cache percentage value at which a Low Memory warning message is displayed to the user for
the current session.
– Warning #2 (%)—Displays the DWF cache percentage value at which a Critical Memory warning message is displayed to the user.
• DWF Cache settings
– Amount of overlay to be used for DWF Cache—Displays the amount of overlay that is to be used as the File Based Write Filter
cache for the next session in MB. This value should be in the range of 256 MB to 32 GB. There is an extra check to ensure that this
value does not exceed 50% of Total Available overlay.
• DWF Warning settings
– Warning #1 (%)—Displays the DWF cache percentage value at which a Low Memory warning message is displayed to the user
(Default value=80, Minimum value=50, Maximum value=80).
– Warning #2 (%)—Displays the DWF cache percentage value at which a Critical Memory warning message is displayed to the user.
Once the memory level crosses the warning level 2, system automatically restarts. (Default value=90, Minimum value=55, Maximum
value=90)
Getting started
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