STH Fremont Colocation Game - Guess the idle power consumption

How many amps @ 120v is the Fremont colo mostly idling at?

  • 5A

    Votes: 2 5.6%
  • 6A

    Votes: 8 22.2%
  • 7A

    Votes: 9 25.0%
  • 8A

    Votes: 5 13.9%
  • 9A

    Votes: 4 11.1%
  • 10A

    Votes: 4 11.1%
  • 11A

    Votes: 3 8.3%
  • 12A

    Votes: 1 2.8%

  • Total voters
    36
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Patrick

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Dec 21, 2010
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Ok so finally got everything setup today. That took awhile! It still is not pretty and thank you @Marsh for stopping by and helping rack a few boxes that already got upgraded since starting the process.

Machines installed, turned on and with either Ubuntu or Proxmox installed and other connected devices

Networking
  • 2x HP V1910-24G gigabit network switches
  • 1x Dell PowerConnect 8132 24-port 10Gbase-T (no uplink cards)

Compute Nodes

Dual socket 2U
  1. 2U Intel server -
    - Dual Intel E5-2699V3,
    - 128GB DDR4,
    - Fusion-io ioDrive SLC 160GB,
    - 6x SATA SSDs
  2. 2U Supermicro 24-bay server -
    - Dual Intel E5-2698 V3,
    - 128GB DDR4,
    - 2x Fusion-io ioDrive MLC 353GB,
    - 5x 15k rpm 12gb SAS3 300GB drives, 3x HGST 400GB SAS2 SSDs, 6x SATA SSDs,
    - add-in SAS3 controller,
    - add-in dual 10Gbase-T controller
  3. 2U ASRock in a Supermicro chassis -
    - Dual E5-2695 V3,
    - 128GB DDR4,
    - 3x 4TB 7200RPM WD RE drives, 2x 800GB Sandisk CloudSpeed Ascend, 2x Intel - DC S3500 160GB, 2x 240GB scratch SATA SSDs
Single socket 1U
  1. 1U Proxmox node
    - Xeon E3-1125C
    - 32GB,
    - 2x SATA SSDs
  2. 1U Dell PowerEdge R220/ DL1000
    - E3-1220 V3,
    - 16GB RAM,
    - 2x SATA SSDs
  3. 1U Supermicro Proxmox Node
    - C2750,
    - 32GB RAM,
    - 2x 960GB SanDisk CloudSpeed Eco
  4. 1U Supermicro pfsense node
    - Atom C2758
    - 8GB RAM,
    - 2x SSD
  5. 1U ASRock based C612 mITX
    - Dual Intel E5-2695 V3,
    - 16GB DDR4 Innodisk SODIMM
    - 2x 480GB SATA SSD + 2x 1TB WD Red 2.5" drives
Other form factor single socket
  1. Proxmox Node
    - Intel Xeon D-1540
    - 32GB
    - 2x 400GB S3700 + 1x 180GB 530 SSD
  2. Supermicro SYS-5028D-TN4T
    - Intel Xeon D-1540
    - 128GB DDR4
    - 2x WD Red 4TB drives and 4x SATA SSDs
  3. Intel Core i5 NUC (aka the mode of last resort)
    - Intel Core i5-3472U
    - 8GB RAM
    - mSATA SSD

Other
  • 2x Lantronix Spider KVMs

Summary: 3 switches including 1x 10Gbase-T, 11 server nodes (stretching that a bit with the NUC but OK), 2x Lantronix Spiders.

The question: How much power is this drawing as measured by the Tripp Lite PDU?

Hint - this is on a 15A @ 120v circuit.

Vote and then put your guess in the reply to this thread. I am going to ask that @Marsh you can vote but since you saw the number yesterday, please do not put your guess in this thread.

I will post actual figures on Friday.
 
Last edited:

neo

Well-Known Member
Mar 18, 2015
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Hmm, this is going to be interesting. I voted 6A

Though if I could have a second guess, it would be 10A
 

OBasel

Active Member
Dec 28, 2010
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10 amps. That'd give you some headroom and I'd guess 50w for the HP switches, 110w for the Dell, 120w for each 2U given what @T_Minus posted, 65w for the 1U's since you've got a lot of drives and many spinners, and maybe 20w for the lantronix. You've got a lot of fans and I'm guessin' not all titanium power supplies.

So 50+ 110+ 360+ 400 + 20 = 1060w / 120 = 8.83A and then I'd at 15% for random power sinks and inefficiencies = 10.15A which is closest to 10
 

Patrick

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Dec 21, 2010
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Seems like we have some votes without corresponding posts. Take a swag and let others know why. I am very curious to see what people think. Seems to be a nice distribution right now.
 

Kristian

Active Member
Jun 1, 2013
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9A: Wild guess. No experience on that subject (I know watts but have never thought about amps)
 

Patriot

Moderator
Apr 18, 2011
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I don't understand this... idle word.
My four tesla packed servers are 15A@220v.
I also don't know what efficiency rating your psu's are but they are certainly less efficient at 120v than 220v.
 
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Yarik Dot

Active Member
Apr 13, 2015
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I am optimist, so 6A. On the other hand E3/E5/Atom equipment can be very cheap to run when idling. Anyway, I do agree with consumption pointed in reply #4 as they will not be far away from the reality.
 
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Jeggs101

Well-Known Member
Dec 29, 2010
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I am optimist, so 6A. On the other hand E3/E5/Atom equipment can be very cheap to run when idling. Anyway, I do agree with consumption pointed in reply #4 as they will not be far away from the reality.
I think 6 is extremely optimistic. I went for 10A at 120V.

@Patriot - I'd guess gold or plat @20% loading is what I'm using for efficiency. But if he's got like 800w PSUs idle could be 10% or less.
 

TuxDude

Well-Known Member
Sep 17, 2011
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I'll toss in a guess at 5A - possibly way-over-optimistic but whatever.
 

nickscott18

Member
Mar 15, 2013
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7A - as idling at just under 1/2 the circuit capacity seems about right - much higher would be a bit concerning if its only at idle.
 

pgh5278

Active Member
Oct 25, 2012
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8 Amps, a very loose addition of CPU and other items, at a more or less idle state, need headroom for power on surge, occasional heavy use, and saftey factor so not blowing breaker unless a real issue..
 
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