Post
Topic
Board Hardware
Re: [Guide] Dogie's Comprehensive SpondooliesTech SP35 Setup [HD]
by
b1naryn1ghtmar3
on 28/08/2015, 14:05:01 UTC
    b1naryn1ghtmar3, Welcome to the Forum.

    When we were first planning our farm we did a lot of research on power distribution and Heat / Cooling and our happy to share our findings with you.

    Power Distribution:
    22 units @ 3,600watts = approx 79,200 (+/- 10% to 12% leakage) watts just for SP-35's (H-$7.92, D-$190.08, W-$1,330.56, M-$5,702.40, A-$69,379.20 US @ .10 ($/kWh)
    (Cooling not including in this calculation)

    The "Heavy Power" standard for the United States is 3-phase voltages of 208, 220, 230, 440, 460 480
    79 Kw Line to Line voltage for 220 with power factor of 1 is approx. 207.321 Amps
    79 Kw Line to Line voltage for 480 with power factor of 1 is approx. 95.0222 Amps
     (Note: Calculation assistance http://www.rapidtables.com/calc/electric/KW_to_Amp_Calculator.htm)


    PDU RESEARCH: We narrowed it down to 3 companies Raritan.com, Tripplite.com and APC.com (now a Schneider Electric Company).  We went with Raritan PX family of intelligent iPDUs for the individual outlet switching, monitoring and high amperage per unit. They are a little expensive but we have found that they more than paid for themselves with the expanded flexibility.

    HUBS: as for your question on Hubs; I would not use a "HUB" it is a broadcast device all communication to all ports.  A "Switch" allows communication to be directed on a port-by-port basis.  The Sp-35's use 10/100mbs Ethernet so make sure so make sure your switch can handle 10/100/1000.  We went with http://www.BROCADE.com switches and routers (note: we had them already and they are very expensive but I would buy them again if we were starting this project from scratch). 

    COOLING: We have found setting COLD/HOT isle worked best for us.  Cold Isle is referencing "Conditioned Air" in the front of SP-35 (estimate approx. 93dB) and Hot Isle is the exhaust heat out of the back of the unit (estimate approx 82 dB).  We Opted for Air & Evap. Cooling in Louisville, Ky. (Mid-West of the US).  Another option working into the Fall/Winter is to Evacuate the Hot Side back into the office (People Conditioned Air) or just Out-Side to the environment).  We opted for "Containment or Container" based Cold/Hot instead of Data Center philosophy of cool the hot air and blow it up (Loop or Circle or Air).

    INTERNET BANDWIDTH: We have a 100/100mb Fiber Internet Connection and the "Server Farm" is only a small fraction of the UP/Down Load connection, most internet traffic is "East/West" (Server to Server), "North" is Internet or Crypto Authentication and "South" is to the secure servers.  With 22 Sp-35's a Low bandwidth connection ranging of 10/1, 15/2, 35/5 or 50/5 connect will be more than plenty.  I never scrimp on "Bandwidth up or down", I can always use more.  [/li][/list]

    NOTE: There are a number of Tools out in the Free or Open Source pool that will help you SSH, Monitor, Control or Adjust the Sp-35's in your stable.

    NOTE 2: Our next generation is/will be Containerized @ 1.2Mw - 1.4Mw each and placed approx 80'-100' underground for cooling.  Heat evacuation is one of our biggest issues/concerns.
     

    You might want to move this discussion to SP-TECH Forum where you will have a greater pool of experts to supply information to help you succeed in your new venture. Spondoolies-Tech official forum (https://bitcointalk.org/index.php?topic=521520.0)
    https://bitcointalk.org/index.php?topic=521520.0

    We are happy to help you any way we can and we hope this help You.

     Thank you for your time in advance,

      /s/ TuffToad

    Disclosure: We have no financial interest in any company or product that has been discussed in this post

    thank you SO much. this is DEFINITELY some good pointers. i will be looking into this. my electric rates are 4¢ kWh during the summer and 3¢ kWh during the winter. so my profits will be a little better than your estimate Wink we also have a roof for our rates. no more than 3000.00 a month Cheesy