PoP wrote
Zymurgy wrote:
Methinks you worry too much.

Any decent kit (i.e something that's not been cobbled up in a 3rd
party case) has a wide operating temperature, and it is the rate of
change of the ambient temperature that causes an issue, not the
actual maximum or minimum temperatures.

I regret that I disagree with you -

Well, it'd be a boring group if we all agreed on something ;-)

using an analagy it's like you saying that your car is fitted with seatbelts so you are immune from
being involved in an accident!

Not saying that at all, just that using my not insignificant knowledge
of computer management in large datacentres,
across an enormous range of kit i'm just saying that measures such as
these from Andy:

:I dealt with it by making an insulated cabinet and arranging two fans
:with ducting in and out from the outside and inside the house. The
:fan speeds are controlled by a temperature sensor and motor
:controller, and there are servo controlled dampers in the ducting.

are overkill in my mind, and still do not mitigate for equipment
internal cooling fan failures.

Your home insurance company might well take a dim view of paying out
if your equipment were to catch fire. Whether or not they can be
challenged on their decision is another matter

Equipment will catch fire if it is so predisposed wherever it is
located.

If this was caused by loft overtemperature, then I agree, there will
be some culpability. If we have a long hot summer reminiscent of '76
then I will consider secondary cooling, or relocation of the
equipment, until such time, I remain nonplussed.

I remain convinced my firewall will be up after its freeze thaw
session last night, due in no small part to the microclimate around it
;-)

Cheers,

Paul