3Com Network Video Server FlexWATCH 3110 - Manual (Page 81)

Network Video Server User’s Manual
Seyeon Tech Co., Ltd 81
pre alarm buffer size for respective camera can be done within this assigned memory.
Note that Pre Alarm buffer for even Alarm buffering service can be done within this
memory size.
Thus, you need to be careful to assign memory for this service. The rest of memory after
setting up Alarm buffer service memory capacity will be assigned to this service
configuration
Alarm Buffering Service size :
To assign memory for Alarm buffering service to save pre/post alarm image in the
system memory so that user can playback stored video in the system through web
browser or download it. Note that Pre alarm buffer for Alarm buffering service can
be done within the Pre-alarm Buffer size. Thus, you need to count in required pre
alarm buffer for alarm buffering service and reserve enough space for this service in the
Pre-alarm Buffer size.
1.1.2 Pre alarm buffer size
Pre alarm buffer size (Image Buffer Pool) means the number of images to be stored
and continuously refreshed in the system memory.
Maximum Pre alarm buffer should be the half size of Memory capacity, since Pre
alarm images for e-mail, FTP or alarm buffering service are taken from Pre
alarm buffer pool and any Pre alarm image for these services require additional
memory space.
Pre-alarm Buffer size :
This is to assign pre-alarm image buffer for each camera. Once this is configured, the
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