It's a pretty ridiculous device, aimed at those who would pay $500,000 for a car with a 1 billion gallon gas tank.
It stores a crap-load of video, yes, but by the time you actually get anywhere near filling up the disks, enough time will have passed that it is functionally obsolete or (more likely) will be broken.
The claimed capacity is 24 terabytes. The largest size disk you can get in volume these days is 6TB, which means you need four of them. Disks fail, and they fail often, so in order to not have customers at your door with pitchforks, you need to build in a bunch of redundancy, which means doubling the number of disks. So, 8 x 24TB disks at a minimum. At retail prices, that's $2400 in disks in today's dollars.
I was going to try to figure out the electrical requirements, but honestly, I can't be bothered. Rest assured running a box like this 24 hours is going to subtract a noticeable wad of cash from your wallet every month.