Configuring Advanced Policy Parameters
Scenario
During policy configuration, you can customize advanced policies for special scenarios.
You can plan and customize application policies of the following types to create efficient policy management solutions for different scenarios.
- indicates that the policy is enabled.
- indicates that the policy is disabled.
- Peripheral
- Audio
- Client
- Display
- File & Clipboard
- Session
- Watermark
- Keyboard & Mouse
Peripheral
A peripheral may support USB port redirection, device redirection, and serial port (device) redirection.
Audio
Type |
Parameter |
Description |
Example Value |
---|---|---|---|
Audio Redirection |
Audio redirection switch |
Applications on user desktops can use audio devices on terminals to record and play audio. |
|
Play Redirection |
Play redirection switch |
This parameter takes effect only after audio redirection is enabled. The playback switch is controlled separately.
|
|
Playback Scenario |
|
Music playback |
|
Record Redirection |
Record redirection switch |
This policy takes effect only after audio redirection is enabled. The recording switch is controlled separately.
|
|
Recording Scenario |
|
Voice call |
Client
Parameter |
Description |
Example Value |
---|---|---|
Auto Reconnection Interval (s) |
Specifies the interval at which the client attempts to connect to the server after the client is disconnected abnormally. The value ranges from 0 to 50. |
5 |
Session Persistence Time (s) |
Specifies the longest duration allowed for automatic reconnection attempts after the client is disconnected abnormally. The value ranges from 0 to 180. |
180 |
Auto Monitor Shutdown After Screen Locking |
|
|
Auto Monitor Shutdown In (s) |
This parameter is valid only when Auto Monitor Shutdown After Screen Locking is enabled. This parameter specifies the waiting time before the local monitor is automatically shut down after the VM screen is locked. The value range is 10–600,000 seconds. |
300 |
Anti-Screenshot Policy |
After the policy is enabled, users are prevented from saving and sharing screenshots on the cloud desktop.
NOTE:
Only Windows clients and Linux TCs are supported. After this function is enabled, other terminals cannot access the system. |
|
Display
Type |
Parameter |
Description |
Example Value |
---|---|---|---|
Display |
Display Policy Level |
|
Level 4 (recommended) |
Display Frame Rate (FPS) |
Indicates the image refresh rate in non-video scenarios. Increasing this value improves image and operation smoothness but consumes more network bandwidth and VM CPU resources. The value ranges from 1 to 60. The recommended value ranges from 15 to 25. |
25 |
|
Video Frame Rate (FPS) |
Indicates the image refresh rate of video. Increasing this value improves video playback smoothness but consumes more network bandwidth and VM CPU resources.
NOTE:
This parameter is unavailable after Rendering acceleration is enabled. |
- |
|
Bandwidth (kbit/s) |
Limits the peak bandwidth of a user. The value ranges from 256 to 25,000. |
20000 |
|
Image Compression Parameters |
Min. Capacity for Image Cache (MB) |
The minimum capacity for image cache, expressed in MB. Increasing this value reduces bandwidth usage but consumes more client memory resources. If the parameter is set to a value smaller than 50, the cache function is disabled. The value ranges from 0 to 300. |
200 |
Lossy Compression Recognition Threshold |
The threshold for recognizing image complexity. Decreasing this value increases image quality but consumes more network bandwidth resources. The value ranges from 0 to 255. |
60 |
|
Lossless compression |
Specifies the image compression algorithm. You can select Basic compression or Deep compression. When you compress the same picture, the compression ratio and CPU usage of basic compression are lower than those of deep compression. |
Basic compression |
|
Deep Compression Level |
This parameter takes effect after Deep compression is selected. A higher compression level means a higher compression ratio and CPU usage but lower bandwidth usage. Level 0 indicates a copy operation and no compression is involved. This level consumes the fewest CPU resources but the most bandwidth resources. |
Level 0 |
|
Lossy Compression Quality |
This parameter is used to set the image quality after lossy compression. Increasing this value improves image quality. The value ranges from 20 to 100. |
85 |
|
Color Enhancement for Office Work |
This parameter is used for color enhancement in office scenarios.
|
|
|
Video Compression Parameters |
Quality/Bandwidth First |
|
Quality |
Average Video Bitrate (Kbit/s) |
Video compression algorithm parameter. Increasing this value in Bandwidth mode improves video quality. The value ranges from 256 to 100,000. |
18,000 |
|
Peak Video Bitrate (Kbit/s) |
Video compression algorithm parameter. Increasing this value improves display quality. The value ranges from 256 to 100,000. |
18,000 |
|
Average Video Quality |
Average quality coefficient of video. In Quality mode, increasing this value compromises video quality. The value ranges from 5 to 59. |
15 |
|
Lowest Video Quality |
Lower limit of video quality. In Quality mode, increasing this value compromises video quality. The value ranges from 5 to 69. |
25 |
|
Highest Video Quality |
Upper limit of video quality. In Quality mode, increasing this value compromises video quality. The value ranges from 1 to 59. |
7 |
|
GOP Size |
Video compression algorithm parameter. Decreasing this value improves video quality but consumes more bandwidth resources. It is recommended that this value be 1 to 2 times the video frame rate. The value ranges from 0 to 65,535. |
100 |
|
Encoding Preset |
Video compression algorithm parameter. Decreasing this value means faster encoding and better smoothness but lower image quality and higher bandwidth usage. |
Preset 1 |
|
Rendering acceleration |
Rendering acceleration |
|
|
Video Acceleration Enhancement |
|
|
|
Video Scenario Optimization |
|
Disabled |
|
GPU Color Optimization |
NOTE:
This parameter applies only to GPU desktops. |
|
|
Video Recognition Threshold |
Number of frames required when you open or exit a video. It is easier to open or exit a video as the value increases. The value ranges from 0 to 500. |
10 |
|
Frame Rate Statistical Length |
Number of statistical frames during video detection. It is easier to open a video as the value decreases. The value ranges from 2 to 100. |
4 |
|
Image Quality Threshold |
It is easier to open a video as the value decreases. The value ranges from 0 to 100. |
0 |
|
Refresh Frequency Threshold |
It is easier to open a video as the value decreases. The value ranges from 1 to 100. |
3 |
|
Threshold of Exiting Video Area |
It is easier to exit a video as the value decreases. The value ranges from 0 to 100. |
8 |
|
Min Video Width |
It is easier to open a video as the value decreases. The value ranges from 0 to 1280. |
191 |
|
Min Video Height |
It is easier to open a video as the value decreases. The value ranges from 0 to 1280. |
191 |
|
Proportion Threshold of Single-Frame Natural Image Block |
It is easier to open a video as the value decreases. The value ranges from 0.000001 to 1. |
0.3 |
|
Number of Cyclical Natural Images |
It is easier to open a video as the value decreases. The value ranges from 0 to 100. |
2 |
|
Threshold of the Non-Natural Image Area Percentage |
It is harder to exit a video as the value increases. The value ranges from 0.000001 to 1. |
0.85 |
|
Threshold of the Non-Natural Image Area Percentage |
It is harder to exit a video as the value increases. The value ranges from 0 to 100. |
25 |
|
Other Parameters |
Graphics Card Memory (MB) |
Device memory capacity. The value ranges from 0 to 64. This parameter affects the bandwidth in some scenarios. Increasing this value reduces the bandwidth usage. |
64 |
Driver Delegation Mode |
|
|
|
Driver Delegation Latency (*30ms) |
The value ranges from 1 to 100. |
80 |
|
Video Latency (*30ms) |
The value ranges from 1 to 100. |
80 |
|
Change Resolution in Computer |
|
|
|
Application Recognition |
Configure display policies for specific applications. (Provided by Huawei engineers) |
- |
File & Clipboard
Type |
Parameter |
Description |
Example Value |
---|---|---|---|
File Redirection |
File redirection switch |
Users can use drivers in file redirection mode on cloud desktops. |
Read-only |
Client Fixed Driver |
NOTE:
When file redirection is disabled, this function is disabled. |
|
|
Client Removable Driver |
NOTE:
When file redirection is disabled, this function is disabled. |
|
|
Client Disc Driver |
|
|
|
Client Network Driver |
|
|
|
Traffic Control |
|
|
|
Good Network Latency Threshold (ms) |
Latency threshold of good network. The value ranges from 1 to 1000. |
30 |
|
Normal Network Latency Threshold (ms) |
Latency threshold of normal network. The value ranges from 1 to 1000. |
70 |
|
Poor Network Latency Threshold (ms) |
Latency threshold of poor network. The value ranges from 1 to 1000. |
100 |
|
Reducing Step (KB) |
Step of reducing the transmission speed. The value ranges from 1 to 100. |
20 |
|
Slow Increasing Step (KB) |
Slow step of increasing the transmission speed. The value ranges from 1 to 100. |
10 |
|
Quick Increasing Step (KB) |
Quick step of increasing the transmission speed. The value ranges from 1 to 100. |
20 |
|
Start Speed (KB/s) |
Initial transmission speed. The value ranges from 1 to 10,240. |
1024 |
|
Test Block Size (KB) |
Block size of speed testing. The value ranges from 64 to 1024. |
64 |
|
Test Time Gap (ms) |
Gap of testing. The value ranges from 1000 to 100,000. |
10,000 |
|
Compression |
|
|
|
Compression Threshold (Byte) |
The value ranges from 0 to 10,240. |
512 |
|
Min Compression Rate |
The value ranges from 0 to 1000. |
900 |
|
File Size Setting on Linux |
|
|
|
File Size Threshold for Linux (MB) |
The value ranges from 0 to 4096. |
100 |
|
Mobile Client Redirection |
|
|
|
Linux Root Directory Mounting |
|
|
|
Linux Root Directory Mounting Path |
If root directory mounting is enabled on Linux, you need to configure the mounting path. The value contains a maximum of 256 characters in UTF-8 format. |
\var\log |
|
Linux File System Mounting Path |
The value contains a maximum of 256 characters in UTF-8 format. |
\media|\Volumes|\swdb\mnt|\home|\storage|\tmp|\run\media |
|
Linux Fixed Driver File System Format |
The value contains a maximum of 256 characters in UTF-8 format. |
- |
|
Linux Removable Driver File System Format |
The value contains a maximum of 256 characters in UTF-8 format. |
vfat|ntfs|msdos|fuseblk|sdcardfs|exfat|fuse.fdredir |
|
Linux CD-ROM Driver File System Format |
The value contains a maximum of 256 characters in UTF-8 format. |
cd9660|iso9660|udf |
|
Linux Network Driver File System Format |
The value contains a maximum of 256 characters in UTF-8 format. |
smbfs|afpfs|cifs |
|
Path Separator |
A single ASCII character |
| |
|
Read/Write Speed (Kbit/s) |
This option is disabled when File Redirection and Send File From VM to Client are disabled. The value 0 indicates that the read/write speed is not limited. Other values indicate the configured read/write speed. The default minimum speed is 32 kbit/s. If the minimum speed is lower than 32 kbit/s, 32 kbit/s is used by default. |
0 |
|
Send File |
Send File From VM to Client |
|
|
Clipboard Redirection |
Clipboard Redirection |
NOTE:
|
Bidirectional |
Clipboard Rich Text Redirection |
|
|
|
Clipboard File Redirection |
|
|
Session
Parameter |
Description |
Recommended Value |
---|---|---|
Automatic Screen Locking |
|
Disabled |
Screen lock waiting time (minute) |
Specifies the waiting time before the desktop screen is automatically locked. The value ranges from 3 to 86,400. |
10 |
Automatic Disconnection/Logout/Restart/Shutdown After Screen Lock |
|
Disabled |
Automatic Disconnection/Logout/Restart/Shutdown After Screen Lock In (Minute) |
Specifies the waiting time before a desktop is automatically disconnected, logged out, restarted, or shut down. The value ranges from 1 to 86,400. |
1440 |
Automatic Logout/Restart/Shutdown After Disconnection |
|
Disabled |
Automatic Logout/Restart/Shutdown After Disconnection In (Minute) |
Specifies the waiting time before a desktop is automatically logged out, restarted, or shut down after disconnection. The value ranges from 10 to 86,400. |
10 |
Hibernation Settings |
|
- |
Desktop Hibernation After Disconnection |
|
Disabled |
Automatic Hibernation After Disconnection In (Minute) |
Specifies the waiting time for automatic hibernation after the cloud desktop is disconnected. The value ranges from 5 to 600,000. |
60 |
Desktop Hibernation Without Operations |
|
Disabled |
Desktop Hibernation Without Operations In (Minute) |
Specifies the waiting time for automatic hibernation when no operation is performed on the desktop. The value ranges from 5 to 600,000. |
60 |
Self-help Console Login Preemption |
This configuration item is used to determine whether preemption login through the self-help console is allowed when a user desktop has been logged in to. indicates that preemption login is allowed and indicates that preemption login is not allowed. By default, preemption login is enabled. The configuration takes effect only after the cloud desktop is restarted. |
|
Watermark
Parameter |
Description |
Example Value |
---|---|---|
Watermark |
|
|
Display Mode |
|
Random motion |
Font Size |
Watermark font size. The value ranges from 8 to 100. |
30 |
Color |
Watermark color |
|
Opacity (%) |
The value ranges from 0 to 100. 0% indicates completely transparent, and 100% indicates completely opaque. |
12.5 |
Quantity |
Number of watermarks. This parameter is available when Display Mode is set to Fixed position. The value ranges from 1 to 17. |
1 |
Tilt |
Specifies the tilt of the watermark displayed on the desktop. The value ranges from –90 to 90. |
–45 |
Custom |
The content contains only digits, uppercase letters, lowercase letters, and some special characters, and cannot exceed 45 characters. After you customize the content, the desktop screen displays the watermark in the format of Customized content Login username Time displayed on the desktop. For example, if the customized content is set to CopyRight, the watermark is CopyRight user 2022-01-08 01:01:01. |
- |
Keyboard & Mouse
Parameter |
Description |
Recommended Value |
---|---|---|
Computer Mouse Device Feedback |
|
Adaptive |
Computer Mouse Device Simulation Mode |
|
Absolute positioning |
Self-help Console Login Preemption |
This configuration item is used to determine whether preemption login through the self-help console is allowed when a user desktop has been logged in to. |
|
Computer external cursor feedback |
|
|
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