Just recognize a basic aspect of physics:  All reactions speed double every 10C.  That holds for chemical reaction rates (and accounts for spontaneous combustion) as well as the lifetimes of circuits.  I won't argue with the poster that an S9 can run at 100C, but its going to do so for a much shorter time.  Might not be an issue if you plan on selling it in under and year (and a good reason not to buy used ones!), but if you plan on hanging onto it for awhile, I'd suggest cooler temps.

Simply look at the label near the input plug.  It should tell you.  The vast majority of PSUs are autoswitching, but its always good to know.  Much older PSUs might have a toggle switch you need to set.

Good info.

Bitmain Antminers are just as bad, with the API userid/password & port hardcoded into the firmware.

It is why you NEVER want to run an Antminer (or apparently an Innosilicon) directly connected to the Internet.  It will be hacked and mining for others within minutes.

Most data centers are not going to be ideal for hosting unless you can find a Tier I or Tier II low-end one.

The vast majority of data centers are Tier III - with generators, UPSes, active cooling, fire-protection, early smoke detection (VESDA) etc.  That means they have a PUE factor of 1.4+ (e.g. They have an overhead of at least 40%, and thats for a pretty efficient one).  Your going to have to pay for all of that.

Its been awhile, but a couple of years ago, if you could get a $150/KW/month rate for data center space you were doing pretty good.  And that was for the big boys needing 10,000 sq ft+ of space (e.g. Wholesale space).  For a part of a rack, your likely going to be more like $450/KW/month.

Miners also qualify as "High Density" data center loads.  The typical commercial data center is designed to handle 2-4KW/Rack.  They may, however, have small High Density areas that are provided with more power and cooling - at a premium.  On the flipside, if they have a shared-rack concept (many require you to buy at least an entire rack), you MIGHT be able to cut a bit of deal since you could help balance them out.  Maybe.  For a smaller data center.  The big boys are not going to want to bother with you.

Last but not least:  Many data centers will laugh and send you packing when you mention wanted to do mining.  Over the years they have been burned repeatedly by miners abandoning gear (and not paying their bills) once the equipment ceases to be profitable.  I've personally seen rows of S1s? (the GPU ones) sitting idle with the owners asking me if they had any value in S7 days.

All that said, Raymond posted a good link for you to start research at:  https://bitcointalk.org/index.php?topic=622998.0  Many of those appear to be asking more like $65/KW/Month, so I'm guessing they are lower Tier facilities (which is fine for your needs).

The APW3++ power supply you mentioned requires 220V power, not 110V.  It will start with 110V, but will not provide the required wattage to run all 3 cards on the S9.  

Don't underestimate the power draw, the associated heat, and the noise.  Think of them as space heaters on high with the sounds of a bad vacuum cleaner running.  The space heater analogy is actually pretty close, except that most space heaters draw a little less power!

e.g.  If you put one of these things in a bedroom without ventilation, your going to create a dry sauna within hours, and cook your investment.

Bitmain vs. Amazon/E-bay is a risk/reward issue.  You will only get a (semi-worthless) warranty from Bitmain.  Their warranty's are not transferable through 3rd parties (e.g. You need the unit serial number AND the order number for them to honor the warranty.  "semi-worthless" because you need to ship the unit back to China (California if your in the USA), and potentially be without it for 3 months while its repaired.)

Personally, I only buy from Bitmain.

While you wait for your delivery, go out and buy a cheap 1300+ watt space heater (like at $39 one), and figure out your ventilation needs.

I extensively had this problem with the PSUs were cold (like 40F).  Once they get to about 55F the majority work fine.  Had a couple out of 80 that wouldn't start until they hit 60F. 

Sounds like yours were on the edge, and plugging them in allowed them to warm up "just enough".

Note the two small fans connected to the controller card just sitting on the table.  Those fake out the controller.

One of my 14TH/sec S9s has been running at around 12TH/sec due to one ASIC card working at about half speed.  The miner status panel showed 6 ASICs as missing (not X, just not there).  Ok, fine.  12TH/sec beats 0Th/sec for several months of warranty repair, so I just left it running.

One of the regulars here has repeatedly suggested downgrading to the 0417 firmware, which I did on this machine (and many others that were under-performing for no obvious reason).  Several of those under-performers came up from 13.3-13.5 back into the 13.8-14.1 range, which I considered a nice win!  Surprisingly, the unit with the missing ASICs came back with all of them showing and crunching along at its rated 14TH/sec!  Very Cool.  Thank you Fanatic26!

Alas, that was yesterday...  today I came in to see the missing ASIC unit running with only 2 hash cards, the other was visible, but not doing anything.  No change after a reboot.  For hells bells flashed it back to 1117 and it came fully up, but now thinks its a 13.5 TH/sec machine.

After running for an hour, the problem card is visibly under-performing:  http://puu.sh/zrgzx/f64f357763.png, but doing better than it used to do by a bit.

Going to just let it run so long as all 3 hash cards are doing something.

Just thought I'd share how fickle these units are.

ps.  Should add that the APW3++s are pretty fickle too. I think.  Seems like I can swap power supplies and sometimes problems go away for awhile.  Sometimes those swapped out power supplies run other S9s just fine.  Sometimes not.  I have (3) out of (103) that definitely have problems powering all three cards (and yes, I'm at 220V).  Fortunately, at todays $2320 miner price vs. $105 power supply prices, its, IMHO, just silly not to have a few spare power supplies if you have more than just a single miner.

Oh, for those of you in the northern hemisphere currently using outside air for cooling, I can definitely state that APW3++ power supplies do NOT like 0C air - or at least most of them don't.  I powered up (80) machines back in early December with temps between 0-2C and about 1/5th of them came up (the lights on the S9s would not even blink on the other 4/5th and swapping in a pre-warmed power supply would fix the problem.).  Fortunately I could open up my hot aisle and allow some air recirculation (now regulated with a thermostatically controlled exhaust fan that keeps my cold aisle around at least 10C).  As the temperature warmed, more and more of the power supplies started working.  It seems that 10C is a more realistic minimum for them.  Once running, they generate enough internal heat to stay happy.  I only state this since they are rated for a running minimum temp of 0C.

The boards I shipped BitmainWarrenty(now MyRig) that they received on December 12th were just shipped back to me repaired.  Hoping to get them in the next couple of days. 

I've been having the insurance debate with myself for months now.

My current thoughts are that its not worth it:  Should my equipment get stolen, my guess is that it would be months before I got check, and MANY months before I could convert that check into equipment to start bringing the data center back up.  Bitmain's current limit of 10 miner per batch would be a killer issue.   Even if the authorities found my equipment, my guess is that it would be impounded as evidence until the trial, so again months of outage.

When down, at least I'm not incurring any cost (building is paid for on property I own, so my only cost is electricity), but I wouldn't be generating my paycheck either.

I highly doubt you could find "lost revenue" insurance that would be affordable.

All that said, I would love to hear opposing views.

Each S9 will pull about 300 CFM, so (10) would require 3000 CFM.  One exhaust fan of that rating or higher and a 10 square foot+ screened in opening should do it.  Anything much smaller on that opening and you will need both an intake and exhaust powered fan or risk back pressure issues,

Note that if you allow the intake and exhaust air to mix from the miners, your likely going to need more air flow.  Ideally you should never let the air from the two sides of the miner mix.

I run 100 miners across (5) 200amp panels.  Each panel has (10) 20amp 220V breakers.  Each breaker goes to a a dual 220V 15amp receptacle.  Each receptacle powers two miners.

Please note that a 15 amp dual receptacle is rated at 15 amps per plug location.  Of course, the wiring needs to handle the total intended load.

At 220V, each miner would suck 6.86 Amps, so 13.72 amps per receptacle, or 68.6% of each 20 amp breaker - nicely under the 80% continuous load rule.

(10) such circuits pull 137.2 amps for a 68.6% total load on the 200 amp mains.  In reality, I have a couple of 15A 110V circuits on the panels for LED lighting, network gear, etc., but that doesn't affect the numbers much, and the panel as a whole is still nicely below the 80% rule.

I would suggest having a 100amp sub-panel with (5) 20 amp 220V breakers installed.  That would provide you power for your 10 machines, presuming you have ~70amps to spare (possibly a problem in the summer if you have an all electric house).

I presume you are prepared for your electric bill once these are running?  Rough math:  1.5Kw/miner/hour, 15Kw/10 miners/hour, 24 hours a day, 30 days a month, 10 cent/kw = $1080/month to power these...

From an S9 that reports at the miner its running at 14.26 TH/Sec, that Slushpool reports as running at 13.75 TH/Sec

Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 0.0.0.0:6060            0.0.0.0:*               LISTEN      30425/single-board-
tcp        0      0 0.0.0.0:http            0.0.0.0:*               LISTEN      1251/lighttpd
tcp        0      0 0.0.0.0:ssh             0.0.0.0:*               LISTEN      1232/dropbear
tcp        0      0 0.0.0.0:4028            0.0.0.0:*               LISTEN      30448/bmminer
tcp        0      0 antMiner-18.local:36891 ec2-54-204-120-204.compute-1.amazonaws.com:3333 ESTABLISHED 30448/bmminer
tcp        0    300 antMiner-18.local:ssh   172.16.4.11:62512       ESTABLISHED 31391/dropbear
netstat: /proc/net/tcp6: No such file or directory

As the previous posted pointed out, Slushpool with AWS.

Hi - Had a T9 that is less than a month old crap out:  http://puu.sh/zqQiU/3f2bc88069.png

Went to the Bitmain site and appear to be in a catch 22:

1)  They want tracking information in order to create a repair ticket
2)  They want copies of the repair ticket in the package

I'm within the USA and planned on using USPS to deliver to their new California repair center.

Do I have to instead use UPS/Fed-Ex or some other carrier that allows me to go online and create a shipping/tracking number and then wait for some type of Bitmain approval?

Last exchange I had with Bitmain after fubaring a controller was that the S9 could not be booted from the SD Card.  Of course, they could have been blowing smoke...

First things first... do a firmware update to the 04/17 firmware release and do NOT leave the "Keep Settings" checkbox set.  That should wipe most things out.

2nd choice:  Do a "Reset to Defaults", followed by the first choice.

https://images-na.ssl-images-amazon.com/images/I/71ngHbefakL._SL1500_.jpg

This is a pretty straight forward plug - two hots on the top and a bottom ground I believe.  I think modern ones have a 4 prong double ground, but I digress.

If you are not comfortable making a plug for your Antminer, please do NOT attempt to do so.  Find a buddy who is, or go another route.  FYI - they can likely find the plugs they will need at Home Depot/Lowes/Menards/etc.

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(Moderator's note: This post was edited by frodocooper to fix broken quote formatting.)

At my previous location I used a pair of Tripp-Lite 30amp power strips to run (8) S9s - (4) per strip, (2) per side of each strip.  Over about a year, I popped one of the 20amp internal breakers once.  Never had any problems on the panel breaker.  These were, of course, maxed.

Unless your having problems, I would not suggest doing firmware updates.

If you do decide to do so anyways, firmware updates are always complete replacements - there is no ordering requirement.

Finally:  Make sure you grab the right one regarding T9 vs. T9+.  Just web into the existing one and it will tell you which it is on the Overview page.

Using the two APW3++'s you have as your described will be just fine - so long as they are, as you indicated, on separate circuits.

Rigging a power cord for your electric dryer outlet, if not in use, might be easier - since its unlikely your going to find 2 separate circuit 110V outlets close to each other.  You would just need a male 30amp dryer plug on one end, 12 gauge (yellow coated) wire for the run, and whatever plug you need for your APW3++ on the other end.  Then you could use a single APW3++ to run it.

Note a step-up transformer is not magic - its going to pull all twice the 220V amperage on the 110V input side, plus waste a bit of power doing it.  e.g.  Blown breaker.