Environmental probes: where to install?

[Az]

MaxxAtWork wrote:
> I'm planning to monitor temperature & humidity in our server room using Nagios.
> Question (admittedly, not strictly related to Nagios): where is best to place
> the probes? At what height?

We placed ours at ceiling height out of air currents as well. The idea 
being the ceiling temp will climb (more noticeably) as you have heat 
issues. The downside here is that if your ambient air temp isnt very 
constant (eg you're using convential office space air con for a data 
centre), then you'll need to have some "fat" in your Nagio thresholds.

We also have some inside the racks at the top as well. These are for 
more touchy racks that hold high heat load devices like SANs and blade 
centres.

Finally, we have one in the air con plant room. The idea here being that 
at some point the external temp might be such that the efficiency of the 
condensers drops off, hence you start to get some impact in the room as 
well. It may never get to that point, but its nice to know before it 
becomes a problem.


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