On-Net Surveillance Systems, Inc.
NetDVR 6.5
Administration
138
Example: With the default archiving folder located under C:\videodata, video from an archiving taking place
at 23.15 on 1st June 2008 for a camera attached to channel 2 on a video encoder device with the MAC
address 00408c51e181 would be stored at the following destination:
C:\videodata\Archives\00408c51e181_2\2008-06-01-23-15
If the device to which the camera is attached is not a video encoder device with several channels, the video
encoder channel indication in the sub-directory named after the device's MAC address will always be
_1
.
Example: (e.g. 00408c51e181_1)
Storing Archives at Other Locations than the Default Archiving Directory
You are of course also able to store archives at other locations than locally in the default archiving directory.
You may, for example, specify that your archives should be stored on a network drive.
When archiving to other locations than the default archiving directory, NetDVR will first store the archive in
the local default archiving directory, then immediately move the archive to the archiving location you have
specified.
While this may at first glance seem unnecessary, it greatly speeds up the archiving procedure, which will
reduce delays in case of network problems. Archiving directly to a network drive would mean that archiving
time would vary depending on the available bandwidth on the network. First storing the archive locally, then
moving it, ensures that the archiving is always performed as fast as possible.
If archiving to a network drive, note the regular camera database
must
still be stored on a local drive, i.e. a
drive attached directly to the computer running the NetDVR system.
Archiving Audio
If audio is enabled on a device, audio from the device will also be archived. If the device is a video encoder
with several channels, audio will be archived with the camera on channel 1.
When an audio source is enabled, audio is recorded to the associated camera’s database. This will affect the
database’s capacity for storing video. It is thus important to bear in mind that the maximum limit of the
database is likely to be reached earlier if recording audio
and
video than if only recording video. It is thus a
very good idea to use archiving if using audio sources. You may also want to archive more frequently if
recording audio
and
video than if only recording video.
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Storage Capacity Required for Archiving
The storage capacity required for archiving depends entirely on the amount of recordings you plan to
archive.
Some organizations want to keep archived recordings from a large number of cameras for several months or
years. Other organizations may only want to archive recordings from one or two cameras, and they may
want to keep their archives for much shorter periods of time.
Before enabling archiving, you should always consider the storage capacity of the
local
drive containing the
default archiving directory to which archives are always moved, even though they may immediately after be
moved to an archiving location on a network drive: As a rule of thumb, the capacity of the local drive should
be at least twice the size required for storing the databases of all cameras for which archiving has been
specified.
When archiving data from a camera to
external
locations, including archiving locations on network drives,
NetDVR automatically checks that the space required for data to be archived plus 1 GB of free disk space
per camera is available at the external location. If not, the external archive location's oldest data from the
camera in question will be deleted until there is sufficient free space for the new data to be archived.
