Topic: [ANN] Spondoolies-Tech - carrier grade, data center ready mining rigs - page 662. (Read 1260395 times)

I'm well aware that it can burn my house ^^ it's why i choose heat and fire resistance for the foam.  Shall be good, but i'll have a powder extinguisher next to the room in case of. If the miner stop by itself in case of overheat, it's fine, if not I'll email you or ofc post a message here for a best practice.
PS: enjoy the holiday and have a good rest !

@timmah:

I have a similar setup already. A couple of things to consider:
- do you have a very good handle on your airflow requirements? Until you do this you cannot size your fans or ductwork. Essentially what you need is to exceed the maximum cumulative airflow of the built-in fans of all your miners
- once you have this sorted you can size your ductwork and fans. I'd strongly suggest learning basics HVAC concepts unless you have experience in the area. I too have found that found that hydroponic websites (pot growers for the most part) have a ton of relevant info.
- If noise is a concern look into mixed flow fans, which produce high airflow and static pressure but can be very quiet. I'm very happy with my fans from the Soler and Palau TD silent series. Ensure the fans you purchase can handle the airflow temperature! Oh, and buy/use grills on your intakes! Also consider having a spare fan on hand!
- vertical stacking is great in theory (I actually run a vertical setup) but keep in mind practical considerations like access to power/data connections both at the wall and to your miners. It also can be much more awkward to swap equipment.
- do you have a plan for how you going to channel the air to force it through the miners? The airstream will take the path of least resistance, and the last thing you want is the air going around your miners and not through them
- you might want to look into ($$/size/noise) a central ac system which will support your airflow requirements in advance...
- I've found a thermal camera (e.g. Flir) is an incredibly useful tool (!!)
- finally, consider the impact if one if your fans fails in the middle of the night - I'm not overly familiar with Spondoolies miners, I imagine they have thermal shutdown capability?

I think it's OK, but I will consult the board guys day after tomorrow (we have Passower holidays still). You can mail me at [email protected] if something doesn't work on the SW side. We did some testing with acoustic foam chimney, it is possible and does help with the noise but you really need to know what you are doing because if you do it wrong you can burn your house. We do not encourage it and take no responsibility if something happens, but it is your miner

I am not sure that you will need the fan at the bottom, as long as there is good air flow in front and in back it will suck all the air it needs. The SW should protect the miner from overheating by downscaling voltage and then stopping the miner.

I have a hosting environment in mind that is only above 35-40 very occasionally, and then only for a short time. The lost hash rate from the higher temperatures would therefore be minimal but I don't want to damage the equipment or create a safety hazard either.

I plan to host 3 sp10 and 3 sp30. I will cool it with air from the house (~20°C atm) and when temp will get higher i will buy an AC for the house. I will put it in a very small room but with high air flow. In add off, i don't plan to stock those appliance horizontal but vertically with a big fan on bottom and big extractor on top.
I believe that it will be good for several reason :
- heat goes up
- horizontal fan make less noise
- easier for me to stack it (the room is very tiny)

Here my plan :


The grey part will be stick to the appliances with a hole to make place for power supplies (I plan do to twice shown on picture).
The fan on bottom is... a fan, nothing more
The air extractor will be something like this : http://www.cultureindoor.com/1299-extracteur-winflex-vk-100-mm-250-m3-h.html
Notice it's from a growshop, they do great pricing.

My last concern is about the bottom of appliance getting hot. I guess i will put 1/2 cm between each appliance and let the fan/extractor do the rest.

Last but not least, i hate the noise. really, badly, whatever... :@
So, i will isolate the door (got some good experience there) and catch the noise with self-adhesive acoustic foam. Already found some very good foam with an α (alpha Sabine) over 0.80 for frequency over 2kHz.

Of course, I've already installed the smoke detector, just in case off :p

Tell me what you think and, SP-T, please tell me if putting the miners vertically is a problem...

Regards,

PS:i shall be delivered on monday, tuesday, so expect pictures soon

I saw that about the DC but I was specifically referring to people who may want to run this at home and do decide to get more than a couple.  As of now the 110-120v circuit on 20 amps (normal for house setups) will only work for 2 SP10s as that is over 2000w and 120v*20amps=2400w, so since most circuits service a whole room then you also have to be careful as anything else plugged in will be enough to trip your breaker.

Same deal with the heat, HVAC in homes are not made to handle that much heat, so you will have to install some more AC or a whole house fan, for the noise you have to consider noise proofing.  If it is in a common area like the living room you will most likely have to enclose the area.  I plan to do it with Plexi, like a small studio room but engineered for sound proofing and optimal air flow.

I have 3 45u racks single frame lifted above the floor by 8" and the 3 racks are about side to side, I had the electricians upgrade my house to 200amp and then run 0awg to a service panel right on the side of the wall where my racks are with a 125amp breaker and I filled that panel with 2 pole 20amp breakers.  This gives me 6 240 outlets as my living room is close enough to the main breaker box that there is no voltage drop.

This gives me 240v*100amp=24,000w.  With all my miners and the 4 SP10s I am pulling just over 10Kw, before this I had 10 Ant S1s, 6 Jupiters, 3 60Gh BFL + 4 Jallys (those are being used as a door stop at the moment).

So, I have barely used half of my available power and there are a lot of things that actually work on 220-240 as well as 120, most wall warts and laptop chargers work with both, PSUs actually are more efficient at 240v, in fact I find that most of my electronics that work at 240 are more efficient.  I have not tested plugging in my plasma TV into the 240 but I bet it would work, just don't want to test it at this point .  Many things that don't even say they are rated to work at 240 do work at 240 and things like PSUs and from the looks at my plasma tv power board it converts the power to 240 before doing DC-DC to the rest of the components.  Using 240v skips the power loss in that process.

Before the SP10s were installed the living room was pretty much quiet, unless you were sitting next to the rack the sound DB was lower than 60 and with the low pitch of larger fans it is not as noticeable.  No issues watching TV.

Now that things are starting to heat up plus the heat from the SP10s the whole room plus kitchen is over 80f, my AC is on 100%, I will be installing a whole house fan that can pull over 7,000cfm right above the rack area and enclose it ASAP, before things get any hotter.

The electrician install cost $2k including permits, utility co upgrading my box, new main box and another breaker box for the 240.  This way my living room is at the normal 120v but my miners are all at 240v, plus what ever I get an ich to test on 240 ...

My racks are mounted on a 5x6 piece of plywood, raised with a 4x4 and 2x4 on top of that, I plan to drill holes so that air can be pulled in from the bottom.

There will be plenty of power once my other miners come but it's the heat and noise that will have to be dealt with.

Even if I were to host it at a DC the issue will be if that DC can handle the heat, these put out more heat than many servers and other rack mount devices and DCs are built to be cold but are made for hosting servers not really hot 100% running miners, I would be interested to see what the temp is for a server rack with just the SP10s filled to the max.

Then that also brings back the issue, I have already spent the money to host over 2Kw of miners and others may have done the same.  Also, even though Spoldoolies is trying to get a good deal for hosting in WA they said that was for over 50 machines.  Not quite something for the average miner, even the ones with a hundred g to spend.

So, point is that these do get hot and for people with 1 or 2 they may not be able to cool it adequately and not everyone wants to host their miners.

there is medication you can get for that.

Yes sir 
Now seriously there is nothing to worry about. People are happy product rocks what else

Going on a short 48 hours trip. I don't know how frequently I'll have Internet access.

Please behave and leave the thread in a good shape.

This message was not intended towards any particular participant.

Guy

and

the marketing world does not start and stop at bctalk, i'm sure Spondoolies-Tech have made sales from folks right over the world who don't stop to read the trollfest that this forum has become... this really irks me (we were all there at one time) just because someone hasn't been logged in / registered for a long period of time, it doesn't make them lack of intellect.

What's not to believe in his post? That he got the unit earlier? This was already stated by me too and by some other members. That Spondoolies Tech was very helpful and prompt? Anything else?


Spondoolies said they are trying to get a good DC deal for their customers so they already got that covered.

I want to thank everyone that responded to my questions, I've got plenty of good info to read. Thanks again.

For DC with "regular" power and heat density, 8 units per rack is indeed make sense. There is no need to space them 4U apart, but since the rack can only provide 12KW, it doesn't change anything.
Our own high density data center can handle up to 32 units per rack.

- The DC´s with really competetive electricity can also handle a good power density. With this you have the choice of a high density data center or just using only some of your rack in a low density environment
   (also, smaller DCs might be able to give you an attractive rate by only charging you for one server and power use, and put the unit into a shared rack that isn´t maxed out yet)

- The whiny, high pitch sound of 40mm fans will be replaced by a different sound in the sp30 (80mm fans)
   Using a bigger case makes it more difficult to move the air through the heatsinks, much of it would flow around it. With a small case you force nearly all air through the heatsink, making for efficient cooling.

- Many times, used replacement server PSUs can be picked up cheaply if one of yours dies, however this should be covered by the initial warranty. PSUs are typically designed to last for ~5 years

There are always both negative and positive points about design and implementation choices.
You should especially check before setting this unit up adjacent to your bedroom, but the noise level is mentioned in the unit stats.

Timmah,

Appreciate that review/comment...

I too have felt the 1.25u is a mis-step in design.  4u would have been much better.

 - Not many DC's can handle > 12kW per rack
 - 120mm vs 40mm fans (improved cooling and lower noise)
 - Potential for ATX PSUs (easier for user replacement)

I was not aware that the heat issues were as severe as noted.  I planned to not have more than 8 per rack as well (<12kW).

Got 3 racks of various miners, KNCs, Bitmain S1s and SP-10s.

The SP-10 is the most professional product I have seen any company develop, this is what I expect when paying what amounts to many years of salary to just get one piece of technology.

No way would Dell, IBM, etc would release a server that they did not actually custom build.  Now with KnC the BTC difficulty was low enough that all October and November orders ROI in Bitcoins was very real and possible.  That is the point, to mine in order to get more BTC than spent otherwise we should just keep the BTC until the price goes up. 

For those that think ROI is part of the expected BTC price increase then they are not looking at reality.  In fact John from HF told me, (B1 buyer, burned very bad), "Look at the price of BTC now!  When we deliver your machines (said in early December 2013) which is estimated to be in just 2 weeks! (Direct LIE) that the price of BTC being so high you will make your money back because the value of bitcoins has gone up so much.  (again Btc in < than Btc out is True ROI even if btc went back to $1)".  Then to add a cherry to the top he said, "We will ship your MPP cards with your order, guaranteed!" I think John needed to lay off the coke.

Anyway, this level of professionally produced machines are what I expect when spending 50-75k in an order. 

KnC got a pass on very bare bone cases and miners because they were able to come out before everyone else with higher such a high GH per machine and also the best Gh/Kw at the wall at the time plus KISS with their product.  That meant that who ever had any of their Oct-Nov batch has already made more BTC than they paid in just 3 months, especially since Hashfast didn't deliver and raise the difficulty same with CoinTerra delivering late and under spec.  KnC could have shipped a cardboard case and people wouldn't care, they only wanted that hashing power since there was nothing in comparison on the market at that time and only delivered 1 week late (I know, KnC is different now).

Back then "home/hobby" miners could get a few of those miners (with the extra hash power at near 550gh) and it was still viable for a home setup.

Of course I hope the best with Spondoolies and really want to count on them to be a truly honest and moral company but now the home miners need to have a lot more capital or other funding otherwise or DC hosting as normal houses will not be able to run even 1 Neptune or one SP30 without major upgrades to 220-240v.  At that point, heat is a large issue, normal house AC will not be able to handle all the heat.

So for a "home rig" to be profitable, power has to be cheap, cooling has to be efficient and cheap, issues of sound and air flow must be taken into consideration and at least more than 1 or 2 miners, you would need more like 5 SP10 and 5 SP30 to really even make a dent in the difficulty and make all the extra work and cost of installing infrastructure worth the return on mining.

At this point having 1th of mining is not to different than 2 BFL Jalapeno running at ~10Gh in total which made about 2-3 BTC back when they finally delivered.  Since no other Asic companies had made large deliveries even the almost 1 year late BFL machine made BTC ROI in about 2 months.

Now 1Th won't generate a single BTC for a week or more, you need more like 10Th to even get close to 1 btc a day.

So I hope Spondoolies changes the playing field and lets people get back in the game.  Only thing is the heat that these generate from the bottom, I would rather have a 2u unit and more heat sinks stronger fans or I still have to keep them about 4u apart from each other because of the heat.  Even if I attach a copper cooling plate with a closed loop R134 coolant and compressor that would cost about $300 per plate, setup for the copper and more power to run the compressor.

Just my 2c, keep up the good work though.

The power needed to cool a certain unit is typically 1/3 of the units´power.
Therefore, an AC that draws 1,3kw should easily be able to cool 2 sp10s or 1 sp30.
You can also try directing the cool air flow by placing the units very near the AC or by creating some kind of funnel (warning, this can be a safety hazard)

I forgot wether Edgard was asking about sp10 or sp30, but for the sake of thermal argument, 2sp10 shall now equal 1 sp30.

These have served me well -- downside is they pull about 1300W at the wall.

Hey Guy,

Thank you for the reply and you are very welcome sir. I was very impressed with the workmanship outside and in, I had to look!

~Blaise

Yes. 40°C is the maximum allowed ambient temperature from safety standpoint.

If, for some unknown reason, someone intend to operate his miner at above 40°C ambient temperature (say, some days in the summer in Israel without AC) we can update the firmware to allow it, at the expanse of hash-rate