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Chapter 3: Failover and Recovery
Traditionally, the CCTV industry has considered recorders to be a single point of failure and has
avoided recording many video streams on a single device to minimize risk. The Cisco Integrated
Services Platform provides recording for many of video cameras and introduces high-availability
features that record video streams during failure events.
Matrix-based N+N Redundancy
To enhance system-level redundancy, Cisco provides a matrix-based N+N redundancy solution,
which allows one or more recorders to act as failover recorders for any number of primary
recorders.
If a primary ISP fails, the streams that it was recording are recorded by a failover ISP. The failover
ISP can also record single encoder ports during a failure. Playback features that were available
before the failure, such as time/date search and instant replay, remain available to the operator.
Figure 13 shows how an ISP can act as a failover ISP for other ISPs.
Figure 13.
Matrix-Based N+N Redundancy
The following equipment and software is required to provide redundancy:
●
Cisco equipment:
◦
At least one dedicated failover ISP. This ISP acts as the failover unit for other ISPs in the
environment. It must be configured in failover mode and to record only when a failure is
detected. The number of video streams to be backed up depends on the number of
Design Guide
3-1
Page I
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