Feels like some of that stuff, like the SSD's are a bit overkill for a media server. Most of them still use spinning disks to maximize size vs. cost.
Additionally, the CPU/GPU needs of a media server are pretty minor, unless you need to transcode on the fly, and even then, single streams aren't very intensive either.
So unless you're capping the outgoing bandwidth to multiple external sources, you're most likely just streaming the video source as-is to the destination, which just needs a stable network stream. If you don't need to transcode at all, you don't really even need a GPU on the hardware.