Hi Patrick, :-)
You have to take care about the airflow, especially in very close future we would have as usual at least 27 °C in cold aisle, … (ASHRAE for DC) An empty 1u below the rack(s) switch will permit to insert air deflector, fan,… etc If you will try to free one U at later stage, you beautiful cabling will be discarded and the uptime of the service will decrease drastically
My two cents on this post
Patrick
Le 5 août 2016 à 19:31, Patrick Studer p.studer@x-netconsulting.ch a écrit :
Hi
Thanks for all the input.
Unfortunately, my questions seems not to be clear enough.
I know, how to solve the issue.
I just wanted to know, if anybody is strictly following the best practice for the airflow or if some ignore the best practice in place for a proper cabling (and perhaps just leaves an additional U free for airflow)?
Or in other words, which option count more (better airflow vs. nice/easy cabling).
Kind regards
Patrick Studer
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-----Ursprüngliche Nachricht----- Von: swinog-bounces@lists.swinog.ch [mailto:swinog-bounces@lists.swinog.ch] Im Auftrag von Gregor Riepl Gesendet: Donnerstag, 4. August 2016 23:16 An: swinog@lists.swinog.ch Betreff: Re: [swinog] Rack mounting Switch/Routers in Cold and Hot Isle DC
How to you solve this issue?
The easiest solution, if there is no fancy (i.e. software controlled) way to reverse fan flow:
Just open the switch, unscrew the fans, turn them around and remount them.
Our network engineer did that countless times, and it always works.
No need to spend heaps of $$$ on hardware with the "correct" flow direction.
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