User guide

DETEXI NVR 24 - 169
7. Recording Services
There are two NVR services that should be running and monitored by the Monitor service in order to
record —
Recorder and Check Drive.
• Recorder service records information and images from each video input into the NVR archive,
according to the configured schedules, preferences, alarms and events.
• Check Drive service monitors the condition of the storage path and device to confirm existence
and available space for new video being recorded to the archive.
Check Alarm Service
If Recording on Input Alarm method is setup in a camera/video server schedule, the Check Alarm
service responsible for watching the status of IP device inputs should also be running and monitored.
• Check Alarm service monitors the hard inputs of connected video devices, and raises alarms
when defined changes are seen on such inputs.
8. Synchronize Recording Services
The DETEXI NVR recording services support runtime configurations. This means that changes in
the cameras recording settings can be made without stopping the NVR services. When you are ready for
your changes to take effect, you should synchronize the services with the current configuration. The
Synchronize button is found in the upper right corner of any NVR Control Center page.
9. Bandwidth Consumption
Bandwidth will be consumed between —
• DETEXI NVR and cameras while recording;
• DETEXI Clients and cameras when live video is being viewed.
Recording Bandwidth Consumption
Recording schedules, both continuous and motion-only require a constant stream from the camera while on
schedule. In addition, recording can be configured to occur on an event — either on a camera input status
change, or via a task triggered by some other event in the system. When calculating bandwidth usage,
consider the worst case scenario — the time of day when the maximum number of cameras will have an
active recording schedule, and also assume that many or all of your event recordings are active.
With these things in mind, use the DETEXI online Bandwidth Calculator to estimate how much
bandwidth the NVR will need to operate as you intend in the Online User Guide — NVR —
Administration and Management — Bandwidth Consumption.
Viewing Bandwidth Consumption
In DETEXI Clients, there are many options for viewing any number of cameras at once. Due to the smart-
scaling features of the DETEXI Client’s multi-camera view, the actual bandwidth usage will depend upon
the computer’s defined resolution, how many cameras are being viewed at once, as well as other factors
that determine the cameras’ display resolutions.