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RE: DATACENTER: AC and colo sizing question.

On Thu, 10 Feb 2000, David Labuskes wrote:

> I've been working on an idea...
> My question is this.  Everything about data center environmental
> issues is centered around ambient temperature, etc.  I recognize
> that these should be 75 degrees, 55 humidity, etc.  But if you put
> your hand next to the air exhaust of a server or even just touch
> one...you know that they are hotter than 75 degrees.

	I would say 65F rather than 75F, with an absmax of 70F.

> My thoughts are to reduce the size of the "room" dramatically and create an
> environment of dust free rapidly moving air that will allow for the exchange
> of heat at a rapid pace.

	Whatever the size of the room good airflow is a must, hot and
cold pockets are a *very bad thing*.

>  To make it all work though, I need to know what the maximum
> operating temperature is for this equipment.  Not the "room"
> temperature.  But more realistically, the motherboard or circuit
> board operating limitations.

	The equipment is designed to operate with a max intake air
temp of X with Y CFM flow.  You must maintain an input air temp well
below the devices rated max, and prevent obstructions to the airflow.

	This means paying attention to where devices exaust to, and
keeping said exaust from the intake for other devices.

As folks might have suspected, not much survives except roaches, 
and they don't carry large enough packets fast enough...
        --About the Internet and nuclear war.