User Manual

Network Video Recorder User Manual
UM NVR v4.xx 111717NA 160
Chapter 17 Hot Spare Device Backup
Purpose
The device can form an N+1 hot spare system. The system consists of several working devices and
a hot spare device; when the working device fails, the hot spare device switches into operation,
thus increasing the reliability of the system. Contact your dealer for details of models that support
the hot spare function.
A bidirectional connection shown in the figure below is required to be built between the hot spare
device and each working device.
Figure 17-1 Building a Hot Spare System
Before You Start
At least two devices must be online.
17.1 Set Hot Spare Device
Purpose
Hot spare devices take over device tasks when working devices fail.
Step 1 Go to System > Hot Spare.
Step 2 Set the Work Mode to Hot Spare Mode.
Figure 17-2 Hot Spare
Step 3 Click Apply.
Step 4 Click Yes in the popup attention box to reboot the device.