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Hi, all. I have been following this excellent CCTV discussion and wonder if I might (with a new subject line) ask what is working well as far as a head end for your IP cameras to connect in to. Thus far, we just have a few CCTV "islands" where analog cameras connect to a local DVR, as well as some fiber cameras that home run back to a DVR in IT. Neither approach is scalable. We are interested in beginning an IP camera setup with maybe 10 cameras to start. Back to the head end issue, it seems that many vendors offer DVR appliances - but I'm wondering if anyone is leveraging their existing virtual server infrastructure to run a camera system and store the video on your SAN. That way, as you upgrade and replace the virtual infrastructure, the DVR system moves too, and you never find yourself with a collection of outdated proprietary video appliances. Also, speaking from a position of near total ignorance, does an IP camera by default (or can it through settings) only send data to the server if there is motion or something changing; or do you get constant traffic from each one no matter what is going on? If the former, it would appear that running a bunch of cameras would not put a significant strain on a virtual server host. Thanks again for the great discussion so far, and for any wisdom on this. Cheers! Charlie ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.

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We use a dedicated server to record CCTV video on as we don't want the IOPs and processing on our SAN or virtual environment. Depending on the capability of the cameras and the back-end software you can significantly reduce network traffic and therefore recorded content. We use H.264 at 5fps to 7fps on most cameras with motion detection enabled on the cameras. Even with the above settings once you start getting hundreds of cameras it can become a decently significant load. fyi, Brian ________________________________________
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