Quote from: arielbit on Today at 10:06:43 PM

Quote from: Commie on Today at 09:51:14 PM

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Quote from: Commie on Today at 08:55:26 PM

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Quote from: astraleureka on Today at 08:14:56 PM

so pull the unit and debug it at a bench. this has been the traditional method of working on large scale cluster deployments for decades, why do it any differently for mining? Commie's example is the ideal way of running a large group of mining rigs.

because pulling the unit with two PSU and (insert the number of GPUs) is a job for two people hehe.

besides pulling out and putting back in is a waste of time. look at what i said above, i fixed my hanging rig faster than you can pull that bar bell from a rack LOL.

Wrong. Hint: rails. It has rails. Grin

Then it's just a matter of few screws and top cover.

So you pull it out like a drawer. Then screws? Screw that. It maybe lighter with rails but it is a waste of time.

How about a rack with rails? You pull the whole rack to troubleshoot and push it back(column of racks) to the air pathway(vent)

A rack with rails is better than a drawer with rails hehe

I'm a bit lost now. A rack is shown on the first picture, what's the point of pulling it (yes you can, it has wheels)? Or do you mean something else?
This is a classic server room setup, each rig equals to a server. Sure if you only have 4-5 rigs you don't need a rack, just use separate cases or hang them to the wall if you wish LOL But when you run dozens of rigs then it's completely different picture. Container setups for 500+cards/250+ asics with hot/cold zones, monitoring systems, security etc are in the market for a reason.

It is a closed rack, that' why i called it drawers, if you want to mine in drawers in the tropics then go ahead hehe

What i mean by racks is open air racks...just google and youtube big gpu farms, they don't mine in drawers with fans.....aaaand they are not in the tropics Wink

Sure card cover panels can be removed and it won't affect the efficiency, but then it might cause additional problems with zoning (indoors) or dust (outdoors). In any case if I decide to go ahead and get one for myself I will test various configs and decide what's best for me.
Anyway, reading a real use case report right now, guys switched from classic rig setup to these cases about a year ago, managing to install 275 8 card rigs (2200 cards) on 70sq.m, 40% more efficient space use. Just getting rid of GPU and extra rig fans alone gave them 33.66Kw/h of extra power, saving almost $15000 annually. Cooling air volume for the room was reduced more than 3 times allowing use of less powerful equipment, hot air extraction system consumes only 8Kw during hot summer months, intake air temperature 30C, cards temperature 55C.
Pretty impressive I'd say!

You remove the gpu fans to save energy but run fans in those drawers? That is not savings, that is load transfer

They may cram 2200 cards in 70sqm but they can't cram heat, a kw power consumed is directly proportional to heat produced whatever the shape/arragement and form those rigs are...they have to compensate with airflow.

Airflow is electricity. That is not savings.

If real estate is cheaper (rent, you already own it) than electricity, then that is not savings.

If i have a 1000sqm and i have those 2200 gpus spread out, i don't even need an exhaust fan, just some windows open and gpu fans running at 30% speed LOL.

And if I have a stadium I wouldn't need to mine at all. Well, maybe just a bit, for purely recreational purposes, LOL.

Anyway, I'll quote the original text below. It's not in English but we have Google Translate, so read yourself if you want and draw your own conclusions. I already made mine.

=========quote starts==============
С использованием корпуса CoolBOX Evolution мы разместили 275 ригов по 8 карт на площади 70 м². Всего 2200 видеокарт MSI P104-100.

Продув рига. Без CoolBOX риги на этих же картах собирались на каркасах. Каждая карта содержит два вентилятора мощностью по 0.4 А каждый. Также для охлаждения каждого рига были дополнительно установлены 6 корпусных вентиляторов по 0.8 А. Считаем потребление рига на каркасе: 0.4 А * 12 v * 16шт = 76.8 Вт*ч. Собственные вентиляторы карт. Плюс дополнительные вентиляторы 0.8 А * 12 v * 6 шт = 57.6 Вт*ч. Итого потребление системы охлаждения рига на каркасе 76.8 + 57.6 = 134.4 Вт*ч. Умножаем на количество ригов 275 = 36,96 кВт*ч. В корпусе CoolBOX Evolution вентиляторы карт удалены, в корпус установлены вентиляторы Delta, которые работают на минимальных оборотах. Ток потребления всех вентиляторов в корпусе 1 А. 1 А * 12 = 12 Вт*ч. Умножаем на 275 корпусов = 3.3 кВт*ч. Экономия более чем в 10 раз. 33,66 кВт*ч освободившейся мощности в результате использования CoolBOX были направлены в майнинг. В год экономия на электроэнергии составит 294.86 МВт*час, что при цене 5 центов за кВт = 14,743 тыс.долл.

Вентиляция. Расход воздуха на приток-отток уменьшен как минимум в 3 раза. Это дает нам уменьшение сечения вентиляционных каналов, а также двукратное сокращение мощности осевых вентиляторов. Потребление вытяжки ЛЕТОМ на весь объект мощностью около 350 кВт всего 8 кВт, температура карт 55℃, входящий воздух +30℃!
Для вентиляции летом фермы такой же мощности собранной на каркасах или в других корпусах необходимо было бы как минимум 16 кВт осевых вентиляторов. При этом температура на картах была бы 65-70℃.
Стабильная круглогодичная экономия на вентиляции составляет около 8 кВт*ч, или 70 тыс кВт*ч за год. При цене 5 центов за кВт это 3500 долл в год. Плюс надо покупать меньше оборудования.

Экономия места.Плотность размещения карт в помещении с помощью CoolBOX Evolution на 40% выше, чем при размещении на каркасах. Это дает экономию в оплате площадей, облегчает поиск подходящего помещения, а также позволяет на 40% нарастить мощности в уже используемом помещении. В специализированном для контейнеров корпусе CoolBOX Revolution плотность размещения видеокарт еще больше.