Administrator Guide

● 4K display—ThinOS supports four displays with 4K resolution in a Horizon blast session. Due to low performance, Dell
recommends that you do not use four displays with 4K resolution.
Table 25. 4K display support
Hardware version Windows version Number of 4K displays supported
10 (ESXi 5.5.x compatible) 7, 8, 8.x, and 10 1
11 (ESXi 6.0 compatible) 7—3D rendering feature and Windows
Aero are disabled.
3
11 7—3D rendering feature is enabled. 1
11 8, 8.x, and 10 1
● 3D rendering—You can configure 3D graphics rendering for connected desktops. To use the 3D rendering feature, use up
to two monitors with a resolution of up to 1920 x 1200. For a resolution of 4K (3840 x 2160), only one monitor is supported.
● Blast H.264—The following table describes the performance of H.264 decoder in VMware Horizon sessions that use the
VMware Blast display protocol:
Table 26. Blast H.264 decoding
Screen resolution within VMware
Horizon Blast session
Blast H.264 decoding in VMware
Horizon Blast session
Summary
Session display width is less than or
equal to 1920 pixels.
Blast H.264 decoding is always enabled. Horizon client uses Blast H.264
decoding even if the H.264 decoder
setting is disabled using GUI or INI
options.
Session display width is greater than
1920 pixels.
Blast H.264 decoding is disabled by
default. You can enable Blast H.264
decoding either on the ThinOS GUI or
by deploying the INI parameter.
By default, Horizon client does not use
Blast H.264 decoding. If the Blast
H.264 decoder setting is enabled on
ThinOS, then the Horizon client uses
H.264 decoding. Enabling H.264 may
downgrade the session performance.
For more information about the monitors and screen resolution, see the Monitors and Screen resolution section in the
Horizon 7 Architecture Planning article at docs.vmware.com. However, Dell does not recommend that you use four displays
with 4K resolution due to low performance.
Blast Virtual Printing
Virtual printing with VMware Blast allows you to use local or network printers from the Blast desktop without the need of
installing the additional print drivers on the remote desktop. For each printer configured locally on ThinOS, you must map the
printer to the VMware Blast desktop. ThinOS Blast printer mapping is equivalent to VMware Blast virtual printing.
To map your printer, do the following:
NOTE:
LPT printer is considered as an example to explain the printer mapping scenario. Printer mapping in ThinOS works
similar to LPT for LPD and SMB printers.
1. Power on the ThinOS client with the VMware View broker configured in the Broker Setup tab. Set the connection protocol
as All Supported from the Connection Protocol drop-down list.
2. Go to Global Connection Settings > Session, and retain the Exclude printer devices check box selection. This option is
selected by default.
3. Plug in a USB printer to the ThinOS client terminal.
4. Go to System Setup > Printer.
The Printer Setup dialog box is displayed.
5. In the Printer Setup dialog box, do the following:
a. From the Select Port drop-down list, select LPT 1.
b. Enter valid printer name and printer identification.
c. Select the Enable the printer device check box.
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Configuring the connection brokers