Embedded DVR is a standalone device which takes the input of the analog camera. It will start to compress the image and afterwards, store into a local Hard disk. Embedded contains all components needed like the operating system, CPU, etc in one cabinet so no external network is allowed. The benefit of this is lesser chance of virus or hacks to happen. However, the problem is that it isn’t fault tolerant in instances when one component fail, you likely have to get a replacement for it since its tied to one chip.