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Failover function
This section provides an explanation of how to use the failover function with NX400 (hereinafter referred to as
recorders).
The failover function requires operation by the system administrator.
Supported software version
The function of the Failover described in this section is available when the software version is V2.0 or later.
About the failover function
When you register the license of the failover function, the stand-by recorder substitutes for the recorder in oper-
ation (master recorder) and continues recording if the master recorder has an error.
Master recorder
Slave recorder
NX400-1
NX400-4
NX400-5
State monitoring
Important:
• The settings of the failover function are made for the slave recorder only.
• Up to 5 master recorders can be set for one slave recorder.
• The software versions of the slave recorder and master recorder must be same.
• The number of additional camera licenses and secure communication licenses registered in the slave
recorder must be equal or exceed the number of licenses that the master recorders have.
• If a slave recorder with registered additional camera licenses switches to a master recorder that does not
have an additional camera license, the slave recorder will lose its additional camera license registration.
If necessary, register the additional camera license to the slave recorder again.
Make sure to safely store the additional camera license registration key number.
Explanation of the failover operation
• The slave recorder monitors the state of each
master recorder.
• If the master recorder has an error, the slave
recorder stops operation of the master recorder.
• The slave recorder substitutes for the master
recorder whose operation has been suspended
and starts recording as the master recorder. At
this time, the slave recorder will restart. It will not
record during restart.
Failover operating condition
• When the slave recorder can not communicate
with the master recorder.
• When there is no HDD or HDD unit that can be
written to by the master recorder.
• When executing the failover function manually in
the setup menu.