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[kano]

Oh also - I was about to post about a failover when I got sidetracked on the posts above

The LA half of the stratum.kano.is node did a double failover at 03:22 UTC (the 2nd time 4 minutes later)

So half the miners on stratum.kano.is will have failed over to their 2nd pool for about 10 minutes at 03:22
Hopefully you all have another *.kano.is node as the 2nd pool so you failed over to here also!

Mine On!

I'm in the east coast of the US.  Is this the best setup?

primary: stratum+tcp://nya.kano.is:3333
2nd stratum+tcp://stratum.kano.is:3333

Looks good

[CryptoStash]

Which leads me to my question regarding firmware.

The four of them have two each, 2.47 and 2.52. The December unit shows 2.32.

Is there a preferred version that "works best" with our pool? Is it a good idea to update to latest version? Anything to avoid? Best practices for updating?

The widely accepted rule for S9s is "If they are not broke, don't fix them".  IF, AND ONLY IF, you are having problems, you might want to try upgrading the firmware.  For Auto-Freq S9s (just log in and see if the card speeds vary) the November 17 firmware is the latest.  Sometimes it helps, sometimes your better off with the April firmware.  You choice is more limited if you have static speed S9s (from over a year ago).

No firmware change will affect your performance on the pool, beyond possibly helping the miner perform better.  Maybe.

Right, I was writing hastily and didn't think about how silly that sounded (works best on a given pool). I just meant if one firmware works better than the other and whether I should upgrade them.. Was hoping that they may have made minor hashing gains through firmware improvements since 2.23..

[CryptoStash]

Obviously talk to Canaan also - they're A841 miners are better performance/less Watt per TH than Bitmain S9 also.

If one has the resources to make that talk productive, who would be the ideal person to reach out to @ Canaan?

Thanks Kano.

[selfblumpkin]

Holy crap where did my math go wrong on the power, you're 100% correct 800 * 1370 = 1,096,000

Thank you for the info. Once i get passed the business plan ill reach out.

Also chuckled when you said "a warehouse with a roof big enough".   Basic solar math, presuming you want to run on 13.5TH S9, with a real world consumption of around 1450 watts:

* (1) typical panel, lets say a 130W one, will produce about 4 hours of power a day at 80% of its rated rate (since the rated rate is optimal during noon soon in the tropics):  130*0.8*4=416 watts per panel per day
* Each miner therefore requires about 3.5 panels
* 1 megawatts of power = (690) 1450W miners = 2,145 panels at about a square meter each, so call it 21,450 square feet of roof space over a data center that doesn't need to be over 2000 square feet in size, likely larger.

But wait...  Nobody is going it invest that type of money to run miners for 4 hours a day, so lets add batteries and enough panels to run for a full 24 hours:  80% efficient charging batteries = 2145*6/0.8 = 16,100 panels.  So about $2M in panels.  Batteries to carry say, 3 days of butts, will match that cost.  So now your at $4M.  Oh, but wait again... we only have enough panels to keep ourself running for 24 hours and now, after a butty day or three, we need to run AND charge those batteries.  Better double the array size (now $4M and 32,200 panels).  Plus battery chargers, inverters, etc.  Add at least another $2M.  

So, we have $6M in solar infrustructure to run 690 miner at something like $1300 each current pricing (sorry, Bitmain doesn't have 13.5's listed right now, which this math is based on); eg. ~$900K in miners.
At $0.10/kwh, and 1MW of required current, each hour cost $100.  So in about 7 years you will break even.  Except that your batteries will likely have been replaced once in that timeframe and likely be coming due for a second round, at $2M  a pop.  Good news, electronics are likely good for 10-15 years.

Oh, and since we now have 32,200 panels in our little setup, your going to need about 320,000 square feet of south facing roof.  That just a bit over 7 acres ON THE SOUTH SIDE.  So a 640,000 square foot warehouse of which you will be using around 2000 square feet.  Or perhaps you could find a 6000 square foot building and provide about 1% of your power for a mere $60,000 - but why bother.

Granted, you could grid tie, and eliminate the batteries and half the electronics, but then you need to deal with paying retail power rates and likely being credited wholesale power rates.   Not aware of many NEW grid tied solar contracts that allow for reversible meters like they use too.  They electric companies have wised up and paid off the right politicians to protect their turf.

First of all, Yes it's a lot of panels. I dont believe i said i was going to run the entire datacenter on solar. To get 50PH worth of electricity from solar would be pretty nuts.

Second, you're completely disregarding the value of srecs. Again, i haven't investigated yet but my hope is that there's a state with low enough electricity rates, or an authority willing to cut a deal due to a saturated market (which i know would mean the srecs are likely devalued.

I was taught how to size solar installations by the VP of sales at AEE solar. I worked for a solar monitoring company based in Germany and I still talk to a lot of the guys in the industry. I've installed monitoring equipment in 500kWh inverters, (which i was TOTALLY not licensed to touch). You didn't take into account any string sizing, central inverters, etc. I'd need far more roof space than 2000 SqFt. Also, a 2000 SqFt building is not nearly as big as you think it is.  They'd likely end up in a field behind the building, which makes wiring to the central inverters much easier. Honestly my best effort will be to make a deal with a government agency somewhere, most likely outside the US. I could get someone to not only help me install renewables, but give me a fantastic price on all of it too. Once you enter the solar industry they say you never leave. I escaped back to IT. Took the job with the German company as a time buyer before i found my next ERP consulting / project manager role.

Third: I wouldn't contract the solar. That's how you get ripped off in solar. The contractors go off and sell your srecs and give you a "lower" price on electricity.

Fourth: I haven't run numbers yet as you can clearly see when i figured clumsily did the math and came up with a MWh for 40 or 50 PH. Kano's absolutely right. Your power usage for 13 or 14 TH is off, by almost a kWh There's also a contingency of waiting for a new bitmain product or rolling the dice with halong. Theyr'e shipping now so i'm sure opinions will be popping up. Everyone know's jihans at least smart enough to wait until he has competition to release a miner that i guarantee is already in testing. See the Unknown miner that starts with 1AM2. Unless it's someone who has multiple data centers, that's most certainly a mix of bitmain using their own supply of S9s with a combo of their new unit (lets call it the S11), or even strictly S11's that they're refurb and sell to idiots like us.  

Fifth: I would 100% grid tie. I wouldn't put that kind of hash power to the whim of inverter/battery failure, or butty days. The solar and/or wind is merely to reduce power consumed by the grid. Get that number down to maybe 5-6 cents. I have to do the math.

Sixth: I don't know if you've been down south at all but there are SO many warehouses just itching to be rented. I worked for a window company and we moved operations from CT to SC when the company was bought. we moved into a half a million square foot facility and used 1/4 of it. We rented out the remaining portion of it, which covered the rent for the building and then some.

There's dozens of ways to cut costs. Miner manufacturers, like every other industry, offers deal for bulk. So does solar.

I haven't put the numbers together yet. That's tomorrow night's job and likely a few nights after that collecting data and running numbers. The first place i checked was with the pool i want to mine on. The second step is draw up the business plan, because as you must know, daily earnings would clearly be based on whether i acquire what i need to competently solo mine, or distribute luck to a pool. I'd far rather the security of the pool than go up against bitmain & co. I'm not going to have a friggen exahash. not even close. I'm actually fairly optimistic about the numbers without having put the plan together. And who said it has to be in the US either? Did you know that just a year ago Germany had to PAY france to take power from them because their grid was too hot due to crazy mass adoption of solar? Their feed-in tariff program worked very well.

Finally, Get bent man

Edit: I cant believe i put the effort into all that for a troll in a forum where i'm asking opinions about bringing a lot of hash power here. Im ashamed

Edit 2: I see why now. you have 1.7PH here. afraid that your farm is cutting it too close as it is and taking shares and possibly not returning the blocks needed might put you in the red.

[selfblumpkin]

shouldn't be worried man. the hash power increase (doubling pool size in the last month) has proven pretty beneficial

with your 1.7PH you haven't solved a block yet. couldn't find your name in acclaim.

Go look for luggyman. I solved one in my first month here.

[perfectplus174]

Holy crap where did my math go wrong on the power, you're 100% correct 800 * 1370 = 1,096,000

Thank you for the info. Once i get passed the business plan ill reach out.

Also chuckled when you said "a warehouse with a roof big enough".   Basic solar math, presuming you want to run on 13.5TH S9, with a real world consumption of around 1450 watts:

* (1) typical panel, lets say a 130W one, will produce about 4 hours of power a day at 80% of its rated rate (since the rated rate is optimal during noon soon in the tropics):  130*0.8*4=416 watts per panel per day
* Each miner therefore requires about 3.5 panels
* 1 megawatts of power = (690) 1450W miners = 2,145 panels at about a square meter each, so call it 21,450 square feet of roof space over a data center that doesn't need to be over 2000 square feet in size, likely larger.

But wait...  Nobody is going it invest that type of money to run miners for 4 hours a day, so lets add batteries and enough panels to run for a full 24 hours:  80% efficient charging batteries = 2145*6/0.8 = 16,100 panels.  So about $2M in panels.  Batteries to carry say, 3 days of butts, will match that cost.  So now your at $4M.  Oh, but wait again... we only have enough panels to keep ourself running for 24 hours and now, after a butty day or three, we need to run AND charge those batteries.  Better double the array size (now $4M and 32,200 panels).  Plus battery chargers, inverters, etc.  Add at least another $2M.  

So, we have $6M in solar infrustructure to run 690 miner at something like $1300 each current pricing (sorry, Bitmain doesn't have 13.5's listed right now, which this math is based on); eg. ~$900K in miners.
At $0.10/kwh, and 1MW of required current, each hour cost $100.  So in about 7 years you will break even.  Except that your batteries will likely have been replaced once in that timeframe and likely be coming due for a second round, at $2M  a pop.  Good news, electronics are likely good for 10-15 years.

Oh, and since we now have 32,200 panels in our little setup, your going to need about 320,000 square feet of south facing roof.  That just a bit over 7 acres ON THE SOUTH SIDE.  So a 640,000 square foot warehouse of which you will be using around 2000 square feet.  Or perhaps you could find a 6000 square foot building and provide about 1% of your power for a mere $60,000 - but why bother.

Granted, you could grid tie, and eliminate the batteries and half the electronics, but then you need to deal with paying retail power rates and likely being credited wholesale power rates.   Not aware of many NEW grid tied solar contracts that allow for reversible meters like they use too.  They electric companies have wised up and paid off the right politicians to protect their turf.

[selfblumpkin]

Yep. Step 1 was kanos ok. Check. Step two, crunch numbers like crazy. Not my first business plan.

Step three, see if my boss / investor agrees. Hes business savvy enough to vet the plan and hire resources to do so. I’ll be providing best and worst case scenarios in my areas of expertise.

Then it’s yay or nay

Hell I might find in my own discovery it doesn’t make any sense

[ChristianUA]

Coupons.. I see some people do give away coupons here to put miners to Kano. If anyone have coupon iam up for putting more th/s to Kano =]

[selfblumpkin]

Coupons.. I see some people do give away coupons here to put miners to Kano. If anyone have coupon iam up for putting more th/s to Kano =]

I gave away two 420s.

I could be coerced into giving one more of those away and a 220. I’m holding the last 420 for personal use.

The stipulation like the others I gave it to is id really like to see a receipt so I know they’re not getting sold. I trust just about everyone on this forum until they give me a reason not to.

PM me your bitmain email. I’m going to sleep now but when I wake I’ll ship a 420 and up to two 220s to you.

[Vlada69]

EDIT: I'm embarrassed.....but I feel it's necessary to bow my head in front of the tribunal and report my mistake. I prematurely completed the checkout to see how easy it was to apply the coupon to finish the order for an S9. Well, I'm still waiting on the rest of my BCH to be deposited from Coinbase and the goddamn order expired. It only gives you 1 hour to complete payment. When it does this, it DOES NOT GIVE YOU BACK THE COUPON!! 
I reached out to BITMAIN (as if that is really going to do anything) and explained, so we'll see if they will have any pity, but doubtful.

Took me 3 efforts to process my payment and I did it over OKEX and still took ages even though I think now they are across the street of each other (bitmain, okex). As I have heard bitmain was expelled from china mainland and now in Hong Kong. It also says expired but when they get coins they change it to paid. So you might need some patients  there.

They will give you the coupon back to use once you explain what happened, at least they did for me... but you will just have to reorder once they put it back into your account...

Not real user friendly when they make you have BCH (which I dont keep) or a wire transfer (which is also a hassle)  ...

I wonder why they dont take BTC?

They used to but jiggly with BTC "expiring" thingy.

Best of luck! 

Mine on with Kano!!

[selfblumpkin]

EDIT: I'm embarrassed.....but I feel it's necessary to bow my head in front of the tribunal and report my mistake. I prematurely completed the checkout to see how easy it was to apply the coupon to finish the order for an S9. Well, I'm still waiting on the rest of my BCH to be deposited from Coinbase and the goddamn order expired. It only gives you 1 hour to complete payment. When it does this, it DOES NOT GIVE YOU BACK THE COUPON!!  
I reached out to BITMAIN (as if that is really going to do anything) and explained, so we'll see if they will have any pity, but doubtful.

Took me 3 efforts to process my payment and I did it over OKEX and still took ages even though I think now they are across the street of each other (bitmain, okex). As I have heard bitmain was expelled from china mainland and now in Hong Kong. It also says expired but when they get coins they change it to paid. So you might need some patients  there.

They will give you the coupon back to use once you explain what happened, at least they did for me... but you will just have to reorder once they put it back into your account...

Not real user friendly when they make you have BCH (which I dont keep) or a wire transfer (which is also a hassle)  ...

I wonder why they dont take BTC?

They used to but jiggly with BTC "expiring" thingy.

Best of luck!  

Mine on with Kano!!

Noooooooooooo pecker!!!!!!!

[ChristianUA]

Coupons.. I see some people do give away coupons here to put miners to Kano. If anyone have coupon iam up for putting more th/s to Kano =]

I gave away two 420s.

I could be coerced into giving one more of those away and a 220. I’m holding the last 420 for personal use.

The stipulation like the others I gave it to is id really like to see a receipt so I know they’re not getting sold. I trust just about everyone on this forum until they give me a reason not to.

PM me your bitmain email. I’m going to sleep now but when I wake I’ll ship a 420 and up to two 220s to you.

I see you dont accept massage from Newbies

[Vlada69]

Any chance we get reddit page too?

[ricknamer]

Hey sidewinder - if you wouldn't mind could you add another 50,000 TH/s this week?  That would be great.

[Brickman67]

Oh also - I was about to post about a failover when I got sidetracked on the posts above

The LA half of the stratum.kano.is node did a double failover at 03:22 UTC (the 2nd time 4 minutes later)

So half the miners on stratum.kano.is will have failed over to their 2nd pool for about 10 minutes at 03:22
Hopefully you all have another *.kano.is node as the 2nd pool so you failed over to here also!

Mine On!

Do I need a different setup for failover:   Pool 1: nya.kano.is
                                                       Pool 2: stratum.kano.is

I checked to make sure I stayed on Kano and it rolled to my third pool (no likey).....

Thanks

[kano]

Oh also - I was about to post about a failover when I got sidetracked on the posts above

The LA half of the stratum.kano.is node did a double failover at 03:22 UTC (the 2nd time 4 minutes later)

So half the miners on stratum.kano.is will have failed over to their 2nd pool for about 10 minutes at 03:22
Hopefully you all have another *.kano.is node as the 2nd pool so you failed over to here also!

Mine On!

Do I need a different setup for failover:   Pool 1: nya.kano.is
                                                       Pool 2: stratum.kano.is

I checked to make sure I stayed on Kano and it rolled to my third pool (no likey).....

Thanks

That's your miners fault or your networks fault ...
NYA hasn't had a fail over for a while and pool2 doesn't affect pool1.

[Brickman67]

Oh also - I was about to post about a failover when I got sidetracked on the posts above

The LA half of the stratum.kano.is node did a double failover at 03:22 UTC (the 2nd time 4 minutes later)

So half the miners on stratum.kano.is will have failed over to their 2nd pool for about 10 minutes at 03:22
Hopefully you all have another *.kano.is node as the 2nd pool so you failed over to here also!

Mine On!

Do I need a different setup for failover:   Pool 1: nya.kano.is
                                                       Pool 2: stratum.kano.is

I checked to make sure I stayed on Kano and it rolled to my third pool (no likey).....

Thanks

That's your miners fault or your networks fault ...
NYA hasn't had a fail over for a while and pool2 doesn't affect pool1.

That's what I thought, appreciate the response and I will look into it....
Thanks again

[nazzer]

Brief power dropout at home just now ... 2 S9's restarted themselves, 8 of them decided to go into "safe mode" (no hashing)

20 minute dip in my hash 

[padrinogtr]

Oh also - I was about to post about a failover when I got sidetracked on the posts above

The LA half of the stratum.kano.is node did a double failover at 03:22 UTC (the 2nd time 4 minutes later)

So half the miners on stratum.kano.is will have failed over to their 2nd pool for about 10 minutes at 03:22
Hopefully you all have another *.kano.is node as the 2nd pool so you failed over to here also!

Mine On!

I'm in the east coast of the US.  Is this the best setup?

primary: stratum+tcp://nya.kano.is:3333
2nd stratum+tcp://stratum.kano.is:3333

same here

[robinsoz]

Holy crap where did my math go wrong on the power, you're 100% correct 800 * 1370 = 1,096,000

Thank you for the info. Once i get passed the business plan ill reach out.

Also chuckled when you said "a warehouse with a roof big enough".   Basic solar math, presuming you want to run on 13.5TH S9, with a real world consumption of around 1450 watts:

* (1) typical panel, lets say a 130W one, will produce about 4 hours of power a day at 80% of its rated rate (since the rated rate is optimal during noon soon in the tropics):  130*0.8*4=416 watts per panel per day
* Each miner therefore requires about 3.5 panels
* 1 megawatts of power = (690) 1450W miners = 2,145 panels at about a square meter each, so call it 21,450 square feet of roof space over a data center that doesn't need to be over 2000 square feet in size, likely larger.

But wait...  Nobody is going it invest that type of money to run miners for 4 hours a day, so lets add batteries and enough panels to run for a full 24 hours:  80% efficient charging batteries = 2145*6/0.8 = 16,100 panels.  So about $2M in panels.  Batteries to carry say, 3 days of clouds, will match that cost.  So now your at $4M.  Oh, but wait again... we only have enough panels to keep ourself running for 24 hours and now, after a cloudy day or three, we need to run AND charge those batteries.  Better double the array size (now $4M and 32,200 panels).  Plus battery chargers, inverters, etc.  Add at least another $2M.  

So, we have $6M in solar infrustructure to run 690 miner at something like $1300 each current pricing (sorry, Bitmain doesn't have 13.5's listed right now, which this math is based on); eg. ~$900K in miners.
At $0.10/kwh, and 1MW of required current, each hour cost $100.  So in about 7 years you will break even.  Except that your batteries will likely have been replaced once in that timeframe and likely be coming due for a second round, at $2M  a pop.  Good news, electronics are likely good for 10-15 years.

Oh, and since we now have 32,200 panels in our little setup, your going to need about 320,000 square feet of south facing roof.  That just a bit over 7 acres ON THE SOUTH SIDE.  So a 640,000 square foot warehouse of which you will be using around 2000 square feet.  Or perhaps you could find a 6000 square foot building and provide about 1% of your power for a mere $60,000 - but why bother.

Granted, you could grid tie, and eliminate the batteries and half the electronics, but then you need to deal with paying retail power rates and likely being credited wholesale power rates.   Not aware of many NEW grid tied solar contracts that allow for reversible meters like they use too.  They electric companies have wised up and paid off the right politicians to protect their turf.

If you mine with solar power on batteries you will almost always come out worse off than if you just bought the power at residential retail rates. You have to factor in wear and tear on the batteries - which by itself can be greater than just buying the electricity. On another note - if mining on solar power skip the inverters and power supplys and use direct current DC converters.