Topic: Need help on S9 first farm setup (Read 1657 times)

I really appreciate all of your help.  I feel a lot more knowledgeable and confident when talking with the electrician.  Thank you!

You can get them cheaper than that.
Especially on Ebay: http://www.ebay.com/itm/APC-AP8941-Switched-Rack-200-240V-30A-Vertical-0U-G2-PDU-/302007831318?hash=item465111cb16:g:xg0AAOSwzJ5XfrJf

They are handy if you are far away and need to reboot a locked machine. But as jstew said, it is not very often that you need to do that. And really if you have a locked machine and can't get there for a day, you are only losing out on the hashrate of that one machine for that time, so most likely not a huge impact.

best advice i can give is keep it simple when first starting out

So much to learn.. (sigh) but I love it!  Thank you!

a cheaper option may be something liek a rpi or audrino tied to the power switch on the psus , then u could reboot the psu using that , i have heard of it being done but im not all to sure what is needed to make it work

theres ppl here alot smarter then me so im sure if u ask around u can find some options for remote power switching that would be cheap

Gotcha!  Thanks!

i dont actualy use any so i couldnt tell ya somone else will have to chime in on that , and the prices for a decent one

The miners are actually several hours away from me unfortunately.  Since the networked pdus are about $500, I might want to reconsider them unless they become absolutely necessary.  But just for sake of it, what are some of the better networked pdus that you know of?

on networked pdu's u can power off each outgoing power port , on a dps4k setup its 2x psus tied into one so u would have to flip the power on both power ports the dps4k setup was plugged into

while there are time si wish i had networked pdu's the number of times ive had to manual reboot maners over the last year anda half has been small , and im only 4 miles from my data center so its nothing for me to run over there to powercycle stuff , last time i looked big networked pdu's were like 500$ and up on ebay

@zachm.  They actually have pdu's that you can connect to your network?  Amazing!  Any suggestions as to which one is good to use?  So if I have multiple dps 4ks connected to this network pdu and if one s9 was unresponsive, I did a hard boot, all s9's on this pdu would go through the hard boot?

@jstew ok I understand the connection now.  On my other questions, sounds like I got some detailed questions for the electrician.  thank you so much for your help!

the particular plug im using is a 20 amp 6-20p , the outlet would be a 20 amp 250v 6-20
the green wire is ground and always goes to the single bottom round pin , since u will be wiring up 220v power the other 2 wires are easy they just go to either remaining in ( black and the white wire)


if im not mistaken kill-a-watts can be used for short times on 220v power , u dont want to leave it plugged in for a long time though

20 amp vs 30,50 amp and pdus all depends on cost and ur budget

if u had 6 s9's it may be cheaper to run 2x 20 amp lines and use 2x dps4k packages versus running a 50 amp or 100 amp line and buying a pdu.
to see what would be most cost effective u would need to talk to the electrician who will be doing the work, and also pricing up the proper pdu


at one point finsky was selling pdu's so u can check with him to get some ideas on pricing

Yes, that is one option. You could also run larger lines (30, 50, 100amp, etc.) and use a PDU for each group of miners. This is what some people do. You can get PDU's that plug into your network and you can access them remotely if you were away and had an unresponsive miner you could hard restart it with the PDU.

There is a lot of research to do when you are looking at a larger scale such as this. A couple miners, is pretty simple and does not need much, but 100+ TH takes a little more planning.

@jstew, thank you for the photos.  Yes, I understand how the connection goes now.  Looks easy enough.  But a couple of questions.  What is the name of the new plug so I know what to ask at a home depot?  Also, on the photo, I don't see any color indication on the new plug telling me which color wire goes where.  Does it say it on the plug?  It's a little hard to see.  Does the black cover comes with the plug?



Follow up questions on your previous msg:

"using 220 over 110 has 2 advantages , most psus are more eff at 220 and u can pull more power over the same line
1300w on 110v is 11.81 amps  u could not run 2x s9's on a single 20 amp 110v line
1300w on 220v is 5.9 amp u could run 3 s9 on a single 20 amp 220v line"

Is there a killawatt-like device that allows me to measure how much amps the s9's are actually consuming at the wall?  I want to be able to confirm the 11.81amps on 110v and 5.9amp on 220v numbers so that I can rest assured that everything is fine.

When the 220v is setup, I assume it's better to use the dps 4k psu because it can accomodate 3 s9's as oppose to the 2880w which can only handle 2 s9's?  Does the dps 4k break down much?



"the server psus require 220v so just have ur electrictian run a 20 amp 220v line to were the miner will be"

When you say "run a 20 amp 220v line", does that mean I can only have 3 s9's max on that one line?  So if I have 10 s9's, I would need the electrician run a 4 20 amps 220v line?  If I have a 100 s9's, I would need about 34 20 amps 220v line?

lower left are my neptune miners , they are about the only thing left in the dc , everything else has been replaced with s7's and s9,s
its perfectly fine to stack them that tight and close together specially the way i cool them with the evaps , its stops the cool air from blowing past the miners and forces it threw the miners.

ull notice on ur s9's if u turn them on there side the cases will lock together so u can stack them , i stack mine in stacks of 3 or 4 4 fits perfect on my shelves top to bottom


heres the plugs i put on the end of my psus cords ,


basically u just cut the factory end off the wire , then u will see the black outer insulation coating and 3 wires inside of that , u strip back the black insulation to expose the 3 inner wires , then strip off about 1/4 inch from each individual wire .

from there its as easy as putting the right color wire in the right hole on the back of the new plug and tightning up a screw




theres also a cover that goes over the white part of the new plug so the 3 single wires arent exposed and on the back of that is a clamp that gently tightens down on the cord so if it gets yanked out of the wall by the wire itself the wires dont pull out of the plug , that whole part is self explanatory though on how to assemble it , infact it will only go together one way


this is what the finished end looks like




i could have gone into greater detail but u should have a pretty good idea of what to do just from what i posted if not let me know , and next time i do a cord ill video the whole process for ya

@jstew thanks for giving me a glimpse of your farm. 
It's ok to have the miners next to each other like that?  Does it get hot for them?

What are those gray boxes on the lower left side?

Evap cooler is a great idea.  I was thinking about something like that too.  I think it's worth having them around just in case.

Take your time with the other photos.

since ur working with about the same amoutn of space i am heres a quick shot of how i have my miners setup
this is my old stuff btw
first thing i do is reverse all the fans on my miners so they pull air from the backside and blow it out the front if i wanted to i could remove the fans from all my miners for a lil extra power savings
behind the shelves the miners are on are 2x 6,000 cfm evap coolers , i use these in the summer to cool the intake air down tot he miners as it can reach 115* + were im at in the summer

the miners just blow the hot air into the building , i leave the door and some windows open for the hotair to get out on the other end of the building , in the winter i dont use the evaps at all because of how cold it gets here


miner shelf



and heres how cold they run in the winter



with ur small setup i dount u will need anytype of additional cooling unless it gets really friggen hot in the summer
if u live in a place were u can use evaporitive coolers they are very cheap to run , each 6k cfm unit only draws 500 watts on high and 380 or something when i have them on low speed

when i head home from work ill take some pics for ya , be about 4 hours from now

@sidekick thanks!  I'm looking further into your router suggestion.

@jstew if you don't mind, please show me photos on how to modify the cord.  And no color blind here!  The warehouse is about 3000 sqft as well.  Ok, I'll keep a lookout for the ambient temp.  Good point about miners close to the floor.

@Finsky I'll also look into the Ubiquiti router.  Also, do you have a website so I can check out more about the PSUs and other items?

i use theese in my datacenter and have had no issues at all with mine , best part is they are cheap on ebay and will run on 110 or 220
http://www.ebay.com/itm/HP-J4813A-ProCurve-2524-Ethernet-Switch-90-Day-Warranty-QTY-Available-/222198541687?hash=item33bc10ad77:g:KZQAAOSwbsBXlkMr


edit sorry mine are the unamanged version , but the same hub/switch

I'll second everything said so far, go with server PSU's as mentioned (mine or others).  ATX PSU's are not cost-effective, even Bitmain's in-house brand are a little over-priced IMO.

For networking equipment, i would HIGHLY recommend buying enterprise-grade gear once and be done with it.  There is nothing more frustrating then having networking problems from crappy equipment.  I have had very good success with Ubiquiti gear (router and P2P bridge myself), it's very user-friendly, reliable and cost-effective with all the features you need.

I would have the electrician quote you on 2 separate prices for wiring (all 220/240V as mentioned earlier).  I would get a quote with 20A circuits run (and use duplex L6-20P outlets) and get another quote for 50A circuits run.  You can use 50A PDU's (40A continuous) to power multiple PSU's, and depending on the cost of wire and labour, it may be more cost effective to go that route. PDU's basically act as a sub-panel, with individual breakers for multiple circuits.  Check out my 2880W or DPS4K PSU threads in my signature for pictures.