User Manual

20BAppendix D: Guidelines when using high camera count (>32 cameras)
122 TruVision NVR 71 User Manual
When there are more than 32 cameras on the recorder, we advise to assign not more than 32
cameras per group. Every camera can only be part of one group.
B. For RAID configurations
The recorder supports different RAID levels but with high camera numbers (>32), we
recommend to use RAID 5 or 6 only.
Using RAID 5 or 6 will distribute the recording load over the different hard drives.
Use at least three (RAID 5) or four (RAID 6) hard drives in a recorder when using RAID 5 or 6.
See the “HDD information” on page 97 for more information about how to configure HDD
grouping or RAID.
Network configuration
It is essential that a stable network environment is used.
A poor quality network will result in data loss, offline cameras, and will equally impact the
recorder’s performance.
A qualitative network will increase the recording stability and viewing performance of the
recorder.
We recommend the following settings:
 Connect two or more network ports. Make sure the ports on the switches are 1 Gigabit
ports.
 In the Network settings of the recorder, choose the working mode Load Balance and
connect all the network ports to the same switch. The ports of the switch also need to be
configured in load balance mode.
For the connection between cameras and the recorder it is better to spread the cameras over
multiple switches as well.
It is also important to ensure the use of qualitative non-blocking switches, such as those
available within the Interlogix IFS product range.
Event recording triggers
The process of activating event or alarm recording requires intelligence from the recorder.
When triggering a high number of alarm/event recordings simultaneously, the recorder’s
performance can be impacted.
We advise to limit the maximum number of cameras that will be recorded for an event to four.
This will minimize the risk of impacting the recorder’s performance.