[AusNOG] Cooling Pads for Juniper SRX?

[Tony de Francesco]

Steve,



They key to keeping the core temperature down is to ensure that the rack is
ventilated well so the inside rack temperature is kept to be no more than
the ambient air temperature.



You could also benefit from placing a roof of some description over the
rack to prevent the rack surface from being subjected to direct solar loads.



If the rack is sealed in order to prevent dust and water ingress then it
will always be a challenge keeping the internal rack temperature below the
ambient air temperature.  Maybe consider a rack mounted A/C unit, although
you wouldn’t get much change from $3-4K.





Tony de Francesco

*From:* AusNOG [mailto:ausnog-bounces at lists.ausnog.net] *On Behalf Of *Skeeve
Stevens
*Sent:* Tuesday, 2 December 2014 3:27 PM
*To:* ausnog at ausnog.net
*Subject:* [AusNOG] Cooling Pads for Juniper SRX?



Hi all,



I have an issue with some Juniper SRX100's overheating.  I've seen them get
hot before, especially placed on something similar (i.e. another SRX100)...
and given warnings of overheating, but never shut down.... but this
situation is different.



These SRX100's are shutting down as they are reaching a core temperature of
70c as they are located in racks that are outside in the sun and on
particularly hot days - around 32c-36c they overheat and turn themselves
off.



Some might say this is understandable... and I sort of agree.  Although
their operating system says they are good to 40c, that doesn't really seem
to be the case.  The SRX110's are a little more tolerant given they are
bigger units - but have the same operating environmentals (along with the
EX2200-C).  But at the moment I have the SRX100's and would prefer not to
swap them out as it will cost significantly.



Then one of my staff had (what I think) a good idea today... to use cooling
pads... maybe like the ones you use for laptops or something.



So I am wondering if anyone has been some solid - not $20 junk or such..
but something that runs off mains, and works well 24x7x365 - maybe even
something that only kicks in once a certain temperature has been reached.



I thought if anywhere, a couple of these mailing lists might have had some
experience with these kinds of things - especially for those who have built
regional pops and have had to cool some equipment.



Thanks all!


...Skeeve



*Skeeve Stevens - *eintellego Networks Pty Ltd

skeeve at eintellegonetworks.com ; www.eintellegonetworks.com

Phone: 1300 239 038; Cell +61 (0)414 753 383 ; skype://skeeve

facebook.com/eintellegonetworks ; linkedin.com/in/skeeve

twitter.com/theispguy ; blog: www.theispguy.com

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