Citrix Provisioning Services 6.1 hotfix #18: RAM Cache alert

Finally Citrix made it possible to trigger a alert in the Windows event log of the target device when the RAM cache usage exceeds a set treshold! Details:

With this fix, the target device reports errors to the Windows system event log when the usage of RAM cache exceeds a set threshold (default 90%).
After that warning, every 2% increase in usage triggers the error as well.
This error report will also be redirected to the server side “StreamProcess.log” as a warning message if the log is enabled.

To enable the fix, you must create the following registry key:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BNIStack\Parameters
Name: WcWarningPercent
Type: DWORD
Value:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BNIStack\Parameters
Name: WcWarningIncrement
Type: DWORD
Value:

[From CPVS61018][#LA3382]

Source: http://support.citrix.com/article/CTX137707

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Citrix HDX Plug-and-Play vs USB Re-direction

This table gives a clear overview of the various re-direction methods for different types of USB Devices and how to override re-direction on client side by editing the HKLM registry:

USB Device Type	USB Class Code	Dedicated Virtual Channel	USB redirection default	Local Override
Audio device	01h	RAVE (HDX Mediastream)	disabled	AutoRedirectAudio=1
Video device	0Eh	RAVE (HDX Mediastream)	disabled	AutoRedirectVideo=1
Printer	07h	Printing	disabled	AutoRedirectPrinters=1
Mass storage	08h	CDM (Client Drive Mapping)	disabled	AutoRedirectStorage=1
Image device	06h	TWAIN	disabled	AutoRedirectImage=1
Smart card	0Bh	Smart card	disabled	ALLOW: class=0b
HID (keyboard)	03h (Subclass code=01,prot=01)	Keyboard	Disabled, not recommended	ALLOW: class=03 subclass=01 prot=01
HID (Mice)	03h (Subclass code=01,prot=02)	Thinwire	Disabled, not recommended	ALLOW: class=03 subclass=01 prot=02
Communication and CDC-Control	02h	–	Disabled, not recommended	ALLOW: class=02
HUB device	09h	–	Disabled, not recommended	ALLOW: class=09
CDC-Data	0Ah	–	Disabled, not recommended	ALLOW: class=0a
Wireless controller	e0h	–	Disabled, not recommended	ALLOW: class=e0

 

Sources:

• Citrix Generic USB Redirection Configuration Guide http://support.citrix.com/article/CTX137939
• How to Configure Automatic Redirection of USB Devices
  http://support.citrix.com/article/CTX123015