I didn't end up going after it as I can't get enough GPUs to justify it. Just been snapping up the cheapest Z400s on e-bay.
But yes it is 3-phase 240v coming in broken out to 120v circuits.
I think the entire pallet went for like $4,300 or so which is like $123 per unit and you don't know condition so probably not worth it anyways.
May I ask why only 120v circuits? If you are deploying new, why didn't you run 240v circuits to the machines for higher density with lower amp draw? From what I can see, it looks like you had them add a 200a panel but then put in like 30 20a circuits with six of them being tandem (cheater) breakers. That's a total possible draw of 720a breaker wise but only in a 200a panel?
I've been deploying 20a 240v circuits and I terminate them with 2 15a 120v (each outlet getting a separate hot from the 240v circuit) and one L6-20R 20a 240v receptacles. I then plug in a 16a 240v PDU that then powers all the big iron at 240v and allows me to have misc 120v items powered through the same circuit but through the 120v receptacles.
If you are pulling 800w on the servers in yescrypt, at 120v that's getting close to 7a. Technically that means 2 servers per breaker if you want to stay around 80% of line limit as 3 servers at full tilt should technically just about trip the breaker. If it was 240, you could technically be powering 5 servers per breaker and be just over 80% load on the 20a circuit.
I'm sure you know all this, just curious as to the rationale behind the decision. If you ever get a chance to respond to my PM, it would be appreciated! Obviously you've been busy!
