American Dynamics VideoEdge User Manual download pdf (Page 227)

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NVR Failover

Overview

You can configure an NVR to act as a Failover NVR or secondary NVR. When configured as a

secondary NVR the NVR will monitor other NVRs on the network which have been added to its

server monitoring list. NVRs which have been added to the secondary’s server monitoring list are

known as primary NVRs.

The secondary NVR will continuously

monitor all the primary NVRs. In the event that a primary

NVR fails the secondary NVR will then switch into failover mode and take over providing services

previously provided by the primary NVR. When the secondary NVR is in Failover mode it can no

longer takeover for another primary NVR. The secondary NVR can only take over providing

services for one primary NVR at a time. Using the default Failover configuration settings, the

secondary NVR will detect the absence of the primary NVR after approximately 30 seconds and

will initiate assuming the role of the primary NVR.

Note

For optimum performance it is recommended to use 1 secondary NVR to monitor a maximum of 8

primary NVRs.

When a primary NVR fails, the secondary NVR assumes the role of the failed NVR and

automatically takes over its services.The secondary NVR will record all media that the primary

NVR was recording, if you have Motion Detection, Video Intelligence, Edge analytics or dry contact

events enabled these will also be assumed by the secondary NVR.

Failover can support both IP and analog video connections. Analog video connections are

sup

ported only when cabling is sufficiently connected between the primary NVRs and secondary

NVR. The camera password group information is also transferred to allow the Failover NVR to

communicate with the cameras. User account information is not transferred, therefore when

prompted to enter a username and password, you must use the username and password of the

primary NVR you are monitoring.

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American Dynamics VideoEdge User Manual Page 227