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4.4.7 Hot Spare
When one of multiple working NVRs failed, the hot spare takes over to replace the faulty one.
When the faulty
NVR recovered, it takes over the hot spare, and the hot spare transfers data stored during the
downtime back to the recovered NVR to ensure reliable and uninterrupted data storage.
Go to Menu > System > Hot Spare.
•
Normal Mode
On the NVR to be used as a working device, perform the steps to add a hot spare:
1. Click Custom Add.
2. Add a hot spare. You can enter the IP of the hot spare manually or search the network
segment. The steps are similar to the steps described in 4.1.1.1 Add IP Cameras.
3. Click Exit to return to the Hot Spare page to complete the setup.
•
Hot Spare Mode
On the NVR to be used as the hot spare, perform the steps:
1. Go to Menu > System > Hot Spare.
2. Select the Hot Spare mode.
Note:
•
Switching the working mode will restart the device. After the device is restarted, some of its
parameters will change.
•
After a working device is switched to a hot spare, some of its functions are unavailable, and some
of its parameters are restored to the default settings.
•
If multiple NVRs fail simultaneously, only one can be replaced by the hot spare; the rest wait for
backup.
UNIGUARD 4 & 8 HDD Series
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