From: Butler, Mathew (ButlerGM@logica.com)
Date: Wed Jul 03 2002 - 03:00:36 EDT
Thanks to Dušek Martin, John Maloney, Peter Stern, Christian Wessely and
Paul Thompson
It seems that the server room is hot, but my machines are not as hot as some
of yours!
Thanks everyone.
Original Message:
=============
Our Machine Room is HOT!
Can anyone please tell me:
- what is the recommended temperature for a machine room?
- how I get my machines to tell me how hot it is (T64 4.0D and T64 5.1A)
- what is the recommended temperature for a machine?
Also, what is the 'heatload' of a server?
Summary of Responses:
==================
>Also, what is the 'heatload' of a server?
Usually, you can calculate that on the basis of the power consumption -
roughly 50% are radiated as heat in some form (and by different parts of
the machine).
So if your Equipment has a power consumption of say 1000 Watts the effect
is nearly the same as if you had a 500 Watt Heater installed.
Of course you have to include all peripherals in this calculation - Raid
Shelf, external CDRs, Battery Units and so on - and the monitors too, of
course.
> what is the recommended temperature for a machine room?
> how I get my machines to tell me how hot it is (T64 4.0D and T64 5.1A)
> what is the recommended temperature for a machine?
you can get the temperature inside the server:
/sbin/sysconfig -q envmon env_current_temp
The recommended highest temperature for a machine could be estimated from
the default value of the env_high_temp_thresh, which is 40 degrees for
AS4100. See sysconfig -q envmon. I hope you could find the recommended
environment condition in Specs for AS4100, for example
http://www.compaq.com/alphaserver/download/4000.pdf.
You can play with envmon - you should have installed the OSFENVMON... from
the OS CD /.../ALPHA/BASE.
Then you cat set values - for example:
envconfig -c ENVMON_CONFIGURED=1
envconfig -c ENVMON_MONITOR_PERIOD=60
envconfig -c ENVMON_GRACE_PERIOD=15
envconfig -c ENVMON_HIGH_THRESH=40
To see them:
envconfig -q
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