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1  Bitcoin / Pools / Re: [2600 TH] CKPool (kano.is) from the cgminer devs [0.9% PPLNS] on: May 08, 2015, 08:09:22 PM
were is the solo.ckpool thread is located

Should be here https://bitcointalk.org/index.php?topic=763510.msg8604106#msg8604106
2  Bitcoin / Pools / Re: 2 AVA4.1s Won! [2200 TH] CKPool (kano.is) from the cgminer devs [0.9% PPLNS] on: April 02, 2015, 01:03:30 PM
Kano ....Trololo Sing Along?  Cheesy

Yep, a lot off 'heh heh heh' in that QR code....
3  Bitcoin / Pools / Re: 2 AVA4.1s Won! [4400 TH] CKPool (kano.is) from the cgminer devs [0.9% PPLNS] on: March 23, 2015, 04:38:20 PM


Thank you Thub, I appreciate the breakdown and I've thought of all of those things.  In a previous life in the Navy I worked as an electrician for a couple of years while waiting for my C school to open up, so dealing with the wiring and distribution isn't a big deal, and I've already got a local contractor lined up once I finalize the building I'm going into.

From everything I've looked at however, it seems like individual PSUs are going to be what I wind up running with for a project of this size.  Industrial DC voltage systems don't seem to be either the right voltage or are too expensive to be worthwhile compared to using the 2880W IBM PSUs.

Where I'm putting this, electrical cost isn't really an issue, but I'm not planning on active cooling, just going with more space (cheap) and big ass fans (also cheap).  I may wind up underclocking during the couple of hot summer months (july/august) depending on operating temperatures and the space.

Fire is the biggest concern I have, I've designed a simple relay system to cut power to all the systems if a fire alarm goes off, but an installation of this size can't afford to staff it 24/7.  I'll have to rely on environmental monitoring, being able to cut the power and the local fire department during off hours.

Server grade individual power supplies are the best way forward and cheaper to replace than a single mega buck SCR power supply, especially when one craters which is why server farms use them. Better to have a few miners go off-line than the whole farm from a power supply failure.
4  Bitcoin / Pools / Re: 2 AVA4.1s Won! [4400 TH] CKPool (kano.is) from the cgminer devs [0.9% PPLNS] on: March 23, 2015, 02:48:30 PM
I have a question maybe you guys can answer.  I'm thinking of setting up a 300 - 400 thash farm, what do people use to deliver power to that many systems?  I mean I have no real problem using 80 of the IBM 2880W PSUs if I have to, I was just wondering if there's a more efficient answer out there.

Wow, this is a real serious project. If you do not understand anything about electricity, or, understand what I have highlighted below please seek professional help as this is not an amateur undertaking.

I am assuming a lot here, so here is my two pence worth, if it sounds a little condescending, my apologies. Your household supply is not designed to carry this load, this is a fairly serious amount of electricity and it is highly unlikely your power provider would upgrade your incoming supply.

I am also assuming your incoming power supply is 230V line to neutral, and that you will be drawing the full current on your 80 power supplies: -

1. You will be using an industrial building for this venture; I hope and not a garage?
2. You will need a three phase balanced power supply to cope with the 348 amps current draw. If your pF goes lower than the manufacturer's power supply stated 0.97 pF then you will end up by paying more for your electricity. Power factor correction capacitors are expensive but would pay for themselves in time. Industrial power rates will also work out cheaper than any household power rates anyway.
3. You will need a large distribution board with a main breaker and lots of MCCB's to split the load into safer current levels along with conduit, cabling buttress boxes and power sockets.
4. I hope you are in a really cold climate, as this current draw is like having over 140 - 2 kW heaters running all of the time.
5. You will need to make sure there is adequate separation between each unit to avoid overheating nearby units and steel racking to house them on.
6. You will need large extractor fans to remove the heat from the building and fans to draw cool air into the building.
7. You will require a huge A/C cooling unit if you are in a warm climate and that is seriously expensive to run.
8. You will need an industrial fire suppression system  - remember the recent Thailand incident. You could possibly have someone monitoring the system 24/7, at a pinch with industrial fire extinguishers, but human error is something you need to factor out.

Good luck.


5  Bitcoin / Pools / Re: 2 AVA4.1s Won! [4400 TH] CKPool (kano.is) from the cgminer devs [0.9% PPLNS] on: March 18, 2015, 01:53:01 PM
Payout 348011 sent
8715d7f09cf6e36e9dc50450cf7b24b7bfe40b40dd56fdcb974b8fb2d38693dd
and confirmed

Kano, reliable as ever with the payouts! Do you ever sleep 'cause it appears to be midnight where you are  Smiley
Yep I get about 6hrs a day - so plenty.
... as long as the pool alarms don't go off Smiley

Though, I do sometimes take a few hours or more to do a payout ... especially on the rare occasion that it comes due when I'm asleep.

6 hrs about the same here, old age creeping in I guess;D. Alarms are a pain. Had my miners screaming blue murder at 2 am a couple of weeks ago when the router bombed out, no more sleep after that.

Ah, the payout timing. Impatient customers panicking that you have run off with their BTC, they need to have a little faith a block payment is not worth scurrying off with.

Keep on sweeping that dust into a container, you never know one day....... maybe Tongue
6  Bitcoin / Pools / Re: 2 AVA4.1s Won! [4400 TH] CKPool (kano.is) from the cgminer devs [0.9% PPLNS] on: March 18, 2015, 01:09:11 PM
Payout 348011 sent
8715d7f09cf6e36e9dc50450cf7b24b7bfe40b40dd56fdcb974b8fb2d38693dd
and confirmed

Kano, reliable as ever with the payouts! Do you ever sleep 'cause it appears to be midnight where you are  Smiley
7  Bitcoin / Pools / Re: 2 AVA4.1s Won! [4400 TH] CKPool (kano.is) from the cgminer devs [0.9% PPLNS] on: March 08, 2015, 02:28:45 PM
Something to write home about ... negative workers! What gremlins are wrecking this havoc?



Sudden death by the looks of it. It is now up to -268. Every refresh sends it up even more!
8  Bitcoin / Pools / Re: 2 AVA4.1s Won! [4200 TH] CKPool (kano.is) from the cgminer devs [0.9% PPLNS] on: March 03, 2015, 08:53:18 AM
All those who sent sacrifices to the block Gods ... finally worked.
Another block has arrived thanks to canaan - and charlotte was the shift it was found in Smiley

Ah, finally a little more than dust for some of us. That was another long drawn out block maybe lady luck will visit us again soon. I suggest all of the rounding dust collected be put back into supporting the pool running costs. Anyone else have a suggestion?
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