Setting Up Desktop and Application Pools in View

Automatic Device Splitting
If you enable automatic device splitting View attempts to split the functions, or devices, in a composite
device according to the filter rules that are in effect. For example, a dictation microphone might be split
automatically so that the mouse device remains local to the client, but the rest of the devices are forwarded
to the remote desktop.
The following table shows how the value of the Allow Auto Device Splitting setting determines whether
Horizon Client attempts to split composite USB devices automatically. By default, automatic splitting is
disabled.
Table 14‑4. Effect of Combining Disable Automatic Splitting Policies
Allow Auto Device Splitting Policy
on View Agent
Allow Auto Device Splitting Policy
on Horizon Client
Combined Effective Allow Auto
Device Splitting Policy
Allow - Default Client Setting false (automatic splitting disabled)
Automatic splitting disabled
Allow - Default Client Setting true (automatic splitting enabled)
Automatic splitting enabled
Allow - Default Client Setting
Not defined Automatic splitting enabled
Allow - Override Client Setting
Any or not defined Automatic splitting enabled
Not defined Not defined Automatic splitting disabled
NOTE These policies are included in the View Agent Configuration ADM template file (vdm_agent.adm). For
more information, see “USB Settings in the View Agent Configuration ADM Template,” on page 193.
By default, View disables automatic splitting, and excludes any audio-output, keyboard, mouse, or smart-
card components of a composite USB device from redirection.
View applies the device splitting policy settings before it applies any filter policy settings. If you have
enabled automatic splitting and do not explicitly exclude a composite USB device from being split by
specifying its vendor and product IDs, View examines each interface of the composite USB device to decide
which interfaces should be excluded or included according to the filter policy settings. If you have disabled
automatic device splitting and do not explicitly specify the vendor and product IDs of a composite USB
device that you want to split, View applies the filter policy settings to the entire device.
If you enable automatic splitting, you can use the Exclude Vid/Pid Device From Split policy to specify the
composite USB devices that you want to exclude from splitting.
Manual Device Splitting
You can use the Split Vid/Pid Device policy to specify the vendor and product IDs of a composite USB
device that you want to split. You can also specify the interfaces of the components of a composite USB
device that you want to exclude from redirection. View does not apply any filter policy settings to
components that you exclude in this way.
IMPORTANT If you use the Split Vid/Pid Device policy, View does not automatically include the
components that you have not explicitly excluded. You must specify a filter policy such as Include Vid/Pid
Device to include those components.
Table 14-5 shows the modifiers that specify how Horizon Client handles a View Agent device splitting
policy setting if there is an equivalent device splitting policy setting for Horizon Client. These modifiers
apply to all device-splitting policy settings.
Chapter 14 Using USB Devices with Remote Desktops and Applications
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