[j-nsp] Juniper SRX Operating Temperature Question

[Joel Jaeggli]

On Jul 20, 2011, at 4:50 AM, Paul Stewart wrote:

> Thanks Scott... much appreciated... yeah, this summer is kinda nuts for
> temperature - good testing basis ;)
> 
> These will be installed in remote sites and most of them are large cabinets
> in rural areas - the cabinets have no airflow in them.  Currently, most
> sites have 2600/2900 series Cisco equipment and that gear has withstood the
> "test of time" so we were hopeful SRX boxes would too...
> 
> One question - when I say 104F I'm talking ambient air temperature.  We have
> one installed for testing and the air temperature at this moment inside the
> cabinet is 80F.  The SRX we are testing there measures a temperature of 124F
> currently.  Roughly speaking, 40F difference between internal SRX
> temperature (presuming that's what it's measuring) and the ambient air
> temperature. Yesterday the chart showed a peak of 104F air temp with the SRX
> reporting 145F internal temperature.  So, what is the data sheet referring
> to I wonder?

it's refering to the ambient air temperature. the thermistor should be measuring the cpu temperature. probably the cpu is fine out to at least 70c (which you are close to) maybe higher, I'd be concerned about accelerated failure of power supplies at some point.

> Cheers,
> 
> Paul
> 
> 
> -----Original Message-----
> From: juniper-nsp-bounces at puck.nether.net
> [mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of Scott T. Cameron
> Sent: July-20-11 7:26 AM
> To: juniper-nsp at puck.nether.net
> Subject: Re: [j-nsp] Juniper SRX Operating Temperature Question
> 
> I have an SRX240-POE in the basement of my house, in the GTA.  As you are no
> doubt aware, it is ridiculously hot here this summer.
> 
> The current temperature of the unit is 39c/102F.  The fans are blowing at
> "normal" according to show chassis environment.
> 
> I'm running 10.4r4 on this box.  In old releases, say 10.3 and earlier, the
> fans used to run at "high" frequently, in the same environment.
> 
> The box does not show any issues and seems to operate just fine.
> 
> Scott
> 
> On Wed, Jul 20, 2011 at 6:29 AM, Paul Stewart <paul at paulstewart.org> wrote:
> 
>> Hi folks...
>> 
>> 
>> 
>> According to the datasheets on SRX210 equipment (for example), the
>> operating
>> temperature is 32-104F - we are looking at an application for them that
>> would see high temperatures peaking at 104F, sometimes a bit hotter.
>> 
>> 
>> 
>> Anyone have any experiences with running small SRX equipment in very hot
>> environments?
>> 
>> 
>> 
>> Thanks,
>> 
>> 
>> 
>> Paul
>> 
>> 
>> 
>> 
>> 
>> 
>> 
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