Selection of hardware for a video surveillance server

Question

Iron

Good afternoon.
Perhaps someone will tell (or share a link) the principle of selecting server hardware for the needs of an IP video surveillance server.
The main questions that interest you:
1) Does this task need more cores or clock speed?
2) How to determine the required number of cores and processor frequency
3) What role does RAM play and how to determine the volume
Also:
I would like to hear advice related to personal experience.
At the moment, the task is to build a server for 50 IP cameras (growth is possible + 10-20)
ZY . I understand that information is needed on the resolution of cameras, etc., but unfortunately it is not available. That is, take the average value of 1.3-2 MP
The server will record, store, as well as view in real time with output to 3-4 monitors.
As an option, I thought to install 2x E5 2650v2 + 32GB ECC reg 1600 DDR3. Stops the cost of one processor 1260 USD per piece. And here comes the dilemma if you take the percentage worse, then either 2630 with 6 cores and 2.6 frequency, or 2640 with 8 cores but 2.00 frequency ....

Answer 1

You'd be better off investing in a disk system rather than a CPU. and oz. Recording cameras on hard drives is not such an expensive operation to chase hertz, even in such volumes. Playing online 3-4 streams, this is the average home computer of some gamer will cope without hesitation.
Where did you get the initial configuration from?

Answer 2

Allow me an amateurish question: why, core 2 duo at 2.4 GHz and hard four is really not enough?

Answer 3

I don't see the point in powerful hardware other than a disk system.
Ideally, take an average AMD (I choose it for the price, not for religion), 1-2GB of RAM and a sane raid on WD RED or similar screws.

Answer 4

It all depends on the video system, in our branch there is videonet recording from about 47 cameras, the percentage is 95% occupied and there are the old Quad Q6600, I have not been debriefing yet, but the resource monitor says that the stream is being written to hard drives without creating a load on them.