The X-NVR-256-AI is a high-capacity 256-channel NVR designed for large camera deployments. To get the best performance, usability, and remote management experience, we recommend following the practices below.

1. Use Normal Mode in Cloud X-VMS

When logging into Cloud X-VMS, use:

Normal Mode

Normal Mode provides significantly more features and configuration options than Cloud Mode.

Cloud Mode is more restricted and is generally better suited for basic cloud-connected access.

You Can Still Use Your Cloud Account in Normal Mode

Normal Mode still allows you to log into your cloud account from the upper-right corner of the VMS.

This is the same cloud account created when you register through the mobile app.

Once you are logged into the same cloud account on:

• Cloud X-VMS
• Mobile devices
• Other supported clients

devices added to the account can synchronize through the cloud.

This means you do not have to manually add the same NVRs and cameras repeatedly on every device.

Recommended Practice

Use Normal Mode as your primary VMS mode, then sign into your cloud account from within Normal Mode.

This gives you the benefit of:

• More VMS features
• Greater configuration access
• Cloud account synchronization
• Easier device management across multiple clients

2. Enable Hardware Decoding When Using a PC for Live Viewing

Many X-NVR-256-AI installations use a PC running Cloud X-VMS as the primary live-view workstation.

The latest version of Cloud X-VMS supports hardware-assisted video decoding.

When enabled, the VMS can use the PC's GPU to decode live camera streams instead of relying entirely on the CPU.

This can significantly increase the number of cameras that can be displayed simultaneously.

Hardware Decoding Is Disabled by Default

To enable it:

1. Open Cloud X-VMS.
2. Go to General Settings.
3. Locate the hardware decoding or hardware acceleration option.
4. Enable the setting.
5. Apply the changes.

Why This Matters

Large multi-camera views can place a significant decoding load on the workstation.

Using GPU hardware decoding can provide:

• Higher simultaneous camera counts
• Lower CPU utilization
• Smoother live video
• Better performance on large split-screen layouts

Recommended Practice

If a PC will be used as the primary viewing station, enable hardware decoding unless there is a specific compatibility reason not to.

3. Choose the Correct Method When Adding the NVR to the Mobile App

The mobile app supports more than one method of adding the X-NVR-256-AI.

The method you choose affects the amount of remote configuration that is available.

QR Code Method

Scanning the QR code is the default and easiest method.

When you scan the NVR's QR code, the device is added using the standard cloud connection method.

This is generally the best option for:

• End users
• Basic remote viewing
• Playback
• Simple day-to-day access

The tradeoff is that remote configuration options are more limited.

Manual P2P ID Method

For system administrators, we recommend manually adding the NVR using its P2P ID.

The P2P ID is displayed on the same system information screen as the QR code.

From the mobile app's scanning/add-device screen:

1. Choose the option to manually add a device.
2. Enter the NVR's P2P ID.
3. Enter the required login credentials.
4. Complete the connection.

When the NVR is added using the P2P ID method, significantly more remote settings are available.

Recommended Practice

Use:

• QR code connection for standard end users
• Manual P2P ID connection for administrators who need greater remote configuration access

You can also add the same NVR using both methods if needed.

This can be useful when one connection is intended for simple everyday viewing and another is intended for administrative access.

4. Plan Storage Around Camera Count and Disk I/O

On a 256-channel NVR, storage design is not only about total recording capacity.

You also need enough physical disks, or spindles, to handle the recording I/O load.

Recommended Maximum

We recommend assigning no more than:

32 cameras per RAID Group or Disk Group

This helps distribute the recording workload across the available drives.

Example: 256 Cameras with 8 Hard Drives

If the NVR is populated with:

• 256 cameras
• 8 hard drives

then dividing the workload evenly results in:

32 cameras per disk

For this type of installation, one option is to configure:

• 8 Disk Groups
• 1 read/write disk per Disk Group
• 32 cameras assigned to each Disk Group

This allows the recording workload to be distributed across all eight drives.

Important

This configuration does not provide disk redundancy.

If one disk fails, recordings stored on that disk will be lost.

However, it avoids concentrating too much recording I/O on a smaller number of RAID groups and can provide good performance when all 256 channels are in use.

RAID vs. Performance

RAID provides redundancy, but the recording workload still needs to be considered.

Do not design the storage system solely around total terabytes.

Also consider:

• Number of cameras
• Camera bitrate
• Number of disks
• Number of RAID or Disk Groups
• Recording workload per group
• Redundancy requirements

Recommended Practice

As a general design target:

Keep each RAID Group or Disk Group at 32 cameras or fewer.

For very large systems, distribute cameras across multiple groups rather than placing the entire recording workload into a single storage group.

5. Do Not Use the HD Button for Large Multi-Camera Views

The HD button located on the bottom taskbar of the NVR live-view screen forces the currently displayed cameras to use their high-resolution Main Stream.

This can create a very heavy decoding load if a large number of cameras are being displayed at the same time.

Example

If you are viewing a large split-screen layout and press HD, the NVR will attempt to display the Main Stream for every camera currently visible.

On a large system, this can cause:

• Very high decoding load
• Slow interface response
• Choppy live video
• Reduced system responsiveness
• The NVR appearing to crawl or become temporarily overloaded

Recommended Practice

Do not press the HD button when viewing large camera layouts.

There is normally no reason to force Main Stream on all cameras simultaneously.

How Stream Selection Normally Works

The NVR automatically manages the appropriate stream based on how the camera is being viewed.

Multi-Camera View

When many cameras are displayed simultaneously, the system uses lower-bandwidth streams (Sub Stream) where appropriate.

This keeps decoding requirements manageable.

Full-Screen View

When an individual camera is opened full screen, the system automatically switches that camera to its Main Stream.

This gives you the high-resolution image when it is actually needed.

You do not need to press the HD button to get full-resolution video from an individual camera.

Recording Quality Is Not Affected

Live-view stream selection does not reduce the quality of your recordings.

The NVR always records the camera's:

• Main Stream
• Sub Stream

The Main Stream remains the primary high-resolution recording stream regardless of whether the live screen is currently displaying a lower-resolution stream.

When the HD Button Is Appropriate

The HD button may be useful when:

• Only a few cameras are being displayed
• You specifically need the highest-resolution live image
• The system has sufficient decoding resources available

For normal operation, especially on large multi-camera layouts, leave the system in its automatic stream-selection mode.

Quick Best-Practice Checklist

Before deploying an X-NVR-256-AI system, verify the following:

• Use Normal Mode in Cloud X-VMS
• Log into your cloud account from within Normal Mode if device synchronization is desired
• Enable hardware decoding on VMS workstations
• Use the QR code method for typical end users
• Use the manual P2P ID method for administrators who need more remote configuration options
• Plan storage based on both capacity and disk I/O
• Keep each RAID Group or Disk Group at approximately 32 cameras or fewer
• Distribute large camera counts across multiple disks or storage groups
• Do not use the HD button with large multi-camera views
• Allow the system to automatically switch to Main Stream when a camera is displayed full screen

Summary

The X-NVR-256-AI is capable of supporting very large camera systems, but proper VMS configuration, stream management, and storage design are important when operating near the upper end of its channel capacity.

Following these recommendations will provide better live-view performance, easier remote administration, and more predictable recording performance.