Attributes explanation, Nvr 3 corporate system administrator ’s manual – ACTi NVR 3 Corporate User Manual
Page 81
NVR 3 Corporate System Administrator
’s Manual
Attributes Explanation
Field Name
Description
Pre-event Recording
Buffer (sec)
:
The NVR server keeps a short cache of video received from the devices.
If an event is triggered, the NVR server will automatically store the
pre-event buffer along with the recording of the event itself. The
maximum length is
60
seconds.
Post-event
Recording Buffer
(sec):
This will determine how long after the event is triggered should be
included in the event recording file. The maximum length is
3600
seconds.
Keep Recording
Files for (1-999
days)
:
The NVR server will keep recording file of specific device for the number
of days you set here. The default value is
30
, and if you want to modify it,
please check the box to start configuring it. Available value is among
1~999
days.
Specific Storage
You can assign a dedicated storage disk for a camera. By enabling this
option and assigning a specific disk, the video footages will be recorded
only to this selected disk rather than those you select on
Setup
page
Storage
tab. Please remember to configure the storage-related settings
for this specific disk on
Setup
page
Storage
tab after you enable this
option.
Remove Expired
Specific Schedule
Settings
By enabling this function, NVR will automatically remove the expired
recording schedule you set for a specific day.
Tip
How to make proper storage arrangement
In NVR 3.0 system, there are two file-deleting mechanisms you can use based on
different needs. If both rules are set, the threshold reached earlier will execute the deletion
first.
1.
“
Keep Recording Files for (1-999 days)
”
– Set this rule if you have more concern in
how long the recordings are kept, especially when you don’t want the old recordings
to stay longer in the system than a certain period.
2.
“Reserve space”
in the
Disk Drive List
on
Setup
page
Storage
tab
–
If the disk
space is more critical in your system, please give an approximate value here, the
system will always reserve this amount of space to store the newer recordings.
Given that you set the
Reserve space
as
30G
while
Keeping Recording Files
setting is
5
days
, certain recording files will be deleted after it has been kept on disk for 5 days,
despite the fact that there is still plenty of available disk space. Before setting up the rules,
you can make use of a handy storage calculator provided by ACTi to find out the
estimated storage your system requires