[AusNOG] Airflow for Cisco switches in racks

[Shane Short]

Another useful article covering this as well: 
http://www.pinebreeze.com/resource_images/dont-bake-network-switches.pdf

Shane Short wrote:
> Panduit do make some doodads for this which was originally designed 
> for the Catalyst 49XX series: 
> http://www.panduit.com/wcs/Satellite?c=Page&childpagename=Panduit_Global%2FPG_Layout&cid=1345564328963&packedargs=classification_id%3D1862584%26locale%3Den_us&pagename=PG_Wrapper
>
> I like the integrated cable management.. because we all put cable 
> management with our switches, right? RIGHT? good!
>
> Hayden Flack wrote:
>> Hi Radek,
>>
>> Have you thought about designing a vent solution that sucks the hot 
>> air and tunnels it to the desired location?
>>
>> It wouldn't need to be a perfect fit, a vacuum type tubing that could 
>> suck the hot air and release it away from the cold isle containment.
>>
>> Regards
>> Hayden
>>
>> On 6 November 2015 at 12:49, Radek Tkaczyk <radek at tkaczyk.id.au 
>> <mailto:radek at tkaczyk.id.au>> wrote:
>>
>>     Hi Guys,
>>
>>     We always mount our network switches in our racks with the
>>     switches facing the rear, so that when you cable up servers, you
>>     don’t have a mess of network cabling going from the front of the
>>     rack to the back of the rack. This has worked well for us for the
>>     last 10 years or so, but recently with providers like NextDC
>>     doing cold isle containment, this means that switches are blowing
>>     hot air into the cold aisle, and some people get unhappy with this.
>>
>>     We use Cisco 3750 switches which are 1RU, and they blow hot air
>>     out the back of the switches, some models have side-to-back
>>     airflow, but it still results in hot air being sent into the cold
>>     aisle. I have always thought that this amount of hot air was
>>     negligible, and wouldn’t even matter in the overall scheme of
>>     things, as long as your servers were mounted around the right way.
>>
>>     How are other people handling this situation? I’m not really keen
>>     on changing our rack standards and having to re-do the entire
>>     cabling for racks across the 4 of our data centres that are using
>>     cold isle containment!
>>
>>     Regards,
>>
>>     Radek Tkaczyk
>>
>>     Ph: 0413 383 231
>>
>>
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