Guide To Selecting Network Video Recorders
A Network video recorder (NVR) is a piece of hardware that allows you to properly manage, record, store, and view IP surveillance video.
They differ from PC server based systems in that they are standalone, plug-and-play systems designed only for IP video tasks. For more on NVR vs. PC Servers check out this post here.
This post however is a general guide to selecting an NVR and the questions you should ask yourself before making a decision.