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  1. #1

    Air cooled datacenter

    We are getting ready to make some colocation space one of our datacenters available to the public. It uses a hybrid system that uses air cooling most of the time with a mechanical system when it's very hot in the summer (Northwest North Carolina).

    We filter the air for particles and add/remove humidity as needed, temperature is always between 69 and 73F.

    We maintain humidity between 40% and 60%, does anybody look for tighter humidity controls and for what reason?

  2. #2
    Join Date
    Feb 2012
    Corrosion and static electical charges are a big danger to hardware. Although some manufacturers allow their products to operate as low as 30% it may not be ideal for a general purpose datacenter. Our datacenter operators run between 45-50%.

  3. #3
    Corrosion is the classic problem with having humidity that is too high.

    The other problem you mention, static is the opposite, when humidity is too low and can cause electrostatic discharge (ESD) problems with people and components as well as the dreaded in-server ESD normally only seen in the driest conditions.

    Most equipment can operate in a much wider range though. Below are the specs for your average piece of dacenter equipment.

    Operating Temperature: 10°to 35°C (50°to 95°F)
    Non-operating Temperature: -40°to 70°C (-40°to 158°F)
    Operating Relative Humidity: 8% to 90% (non-condensing)

  4. #4

    scarcity oodacrs

    thanks for the info.. i was looking for it..

  5. #5
    Netapp built one that uses air for cooling when possible at RTP in NC. Give them a call; I'm sure they would love to talk to you about how they handle humidity.

  6. #6
    I have seen it many times, what a fantastic facility. They let their humidity drift to 75% or more. Everything is fine at that humidity with server vendors, but tapes and tape drives are sometimes outside the mfg spec.

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  7. #7
    Join Date
    Apr 2007
    5% +/- change in relative humidity is about normal for most data centers, keep an eye on it though, you certainly don't want a built up of static or condensation.

    Most data centers I worked in have some "free cooling" rooms, but they are predominately for their own equipment not colo.
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  8. #8
    Join Date
    Dec 2010
    United States
    This reminds me of Google's top secret datacenters and Facebook datacenter as well.
    Wanna Wiki ? So here it is Wiki

  9. #9
    Join Date
    Nov 2012
    Gainesboro, TN
    I have been working on a solution for my small data closet (dare I call it a data center) that entails earth tubes.

    That solution typically maintains a steady 30-60% humidity from all the paperwork I have gone over thus far.

  10. #10
    Join Date
    Apr 2013
    What is the basic problems do you felt when you tried to be green? Means using the air cool DC is not in just TEXAS so you just use windmill energy, so?

  11. #11
    scotland would be a good place to put a data centre during the winter freezing here lol

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