Cluster Service; Configuring Cluster Ip - Dahua NVR21-4KS3 Series User Manual

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6.4 Cluster Service

The cluster function, also known as cluster redundancy, is a kind of deployment method that can
improve the reliability of the device. In the cluster system, there is a number of main devices and
another number of sub devices (the N+M mode), and they have a virtual IP address (the cluster IP).
When the main device fails, the corresponding sub device will take over the job automatically. When
the main device recovers, the sub device will transmit the configuration data, cluster IP address and
videos recorded during the failure to the main device which then takes over the job again.
In the N+M cluster system, there is a management server, the DCS (Dispatching Console) server,
which is responsible for timely and correct scheduling management of the main and sub devices.
When you create a cluster, the current device is used as the first sub device and the DCS server by
default.
This function is available on select models.

6.4.1 Configuring Cluster IP

When the main device malfunctions, the sub device can use the main device configuration and
Icon Description
Includes eight function tiles: LIVE, PLAYBACK, AI, ALARM, POS,
OPERATION, BACKUP, DISPLAY, and AUDIO. Click each tile to
open the configuration page of the tile.
● LIVE: You can perform the operations such as viewing real-
time video, configuring channel layout, setting PTZ controls,
and using smart talk and instant record functions if needed.
● PLAYBACK: Search for and play back the recorded video
saved on the Device.
● ALARM: Search for alarm information and configure alarm
event actions.
● AI: Configure and manage artificial intelligent events. It
None
includes smart search, parameters, and database.
● POS: View POS information and configure related settings.
● OPERATION: View system information, import/export system
configuration files, or update system.
● BACKUP: Search and back up the video files to the local PC or
external storage device such as USB storage device.
● DISPLAY: Configure the display effect such as displaying
content, image transparency, and resolution, and enable the
zero-channel function.
● AUDIO: Manage audio files and configure the playing
schedule. The audio file can be played in response to an
alarm event if the voice prompts function is enabled.
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