yes, i mean a system on a chip design. i don't want the OS to be on the hard drive that is used for data storage (this sounds less reliable IMHO).
I'm looking at this Avermedia product, though "16 channels" seems a little bit overkill and the price is closer to ~$1500 online...
www dot avermedia-usa dot com/surveillance/productdetail.aspx?id=64
the monitoring is just general residential security cameras. we will have the 8 feeds broadcast to all the tvs in the house plus access over the web.