Ideal temperature and humidity for server room (not data center)

5 pts.
Tags:
Data center cooling
Server room
Server room design
Server room humidity control
What is the ideal temperature and humidity range for a server room (not a data center)?

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Ideal is about 68 Degrees Fahrenheit and between 40% – 60% humidity.

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There is a very useful page that discusses this very subject. The numbers on the page support the answers given so far. There is also information on that page about how to maintain that temp.

Good Luck!
-Flame

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It is more important to measure the temperature at specific places in the room. A temperature above 80 F at
the front side of your servers (air intake side) will void most suppliers’ warrantees, but the temperature at the back
(air output side) can be basically anything. Set up your room so that the servers are cooled by spot cooling
equipment and not just by comfort-level room air conditioning as the latter costs far too much. Aside from
compliance with fire-safety laws, attempt to segment the imput side and output side of servers. See if it fits zoning
laws to output the server heat using exhaust fans vented to the outside of the building, or into the server room
air return system. In many places it is not legal to use the same air circulation system for server rooms and
worker spaces. – Wolf

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  • carlosdl
    For temperature, the recommended extreme limits are from 50°F to 82°F, but the optimal range is 68-71°F
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  • Dave mc
    Server room conditions are like a mini data rooms, but can need some special considerations especially if the area is small with a high heat load as air movement is particularly difficult. Again ensure you have a hot /cold isle type arrangement. Eg; all the servers suck in the cold air from the same side and not feed hot air back into the cold air side. This allows many cooling solutions that allow the hot air to be returned from the hot side and directed directly to the cold side. The more mixing of the hot & cold air means the more over cooling capacity your need due to inefficiencies in air movement. If you intend to use blade servers the cold side should really be isolated from the hot side. If you intend to only have a few racks then the boxed fridge type are useful but remember when you open the doors for access, the fridge in box effect is lost. The colder you make the room the more energy is used due to the heat incursion into the room from outside areas/walls and also the lower the efficiency of the cooling unit heat exchanges. Avoid using domestic cooling units as they cant handle the constant use and failure rates can reach unacceptable limits. (they cost a lot more over 10 or more years) I have no problems running the cold side of the server up to 25degC or 77degF and at one site we are running at 27degC or 80.6degF. In the second site the efficiency has risen sufficient to allow for the additional servers that initially exceeded the original cooling design. These sites have been running for over 12 months and one site 3 years and no additional faults have occurred. If the server supplier complains ask him for the spec sheets and than ask him why when the spec sheets allow this temperature. In respect to humidity as long as you install a anti-static floor the RH can fall as low as 20 to 30% and as long as the cooling temp is stable and not changing rapidly and the rate of humidity change is low you can go as high as 80%RH. And before all the traditionalists start jumping up a down, get use to these temperatures and humidity ranges as this is what is going to be legislated for in the near future due to global warming etc. I fact if you are installing a new room why not use the free cooling systems when ever the surrounding or out side temperatures are 80degF or lower. These systems can save the additional costs with the reduction in electrical and maintenance costs in less than 12 months, depending of where you are located and the server rooms are a lot easer to do that a computer room. Glad to answer any questions
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  • Therrysa
    Currently we are just set up a new data center. Badly to say that the temperature of the room is about 28 degree Celsius with running a unit of 1 hose power aircond by auto-switching function. Our problem is, the management is not intended to pay for extra money to add another unit of aircond to our data center. The temperature for our server room now is around 27 to 28 degree Celsius. Anyway, to resolve this, I used to switch on aircond A for 1st 2 hours, airconds A&B for next 2 hours, and aircond B for next 2 hours. The temperature is decrease to 21 degree Celsius when we are running both airconds, and it slowly increase to 26.2 degree Celsius when we switch to either 1 aircond. I would like to get an advise on this issue whether this is the better solution to resolve the heat problem? Thx.
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