[asterisk-users] Quiet 24 port POE gig switch

Singer XJ Wang wang at pythian.com
Mon Feb 2 09:58:57 CST 2009


[snipped]
> You can do that by using fans other than the tiny, whiney, 40mm fans
> that vibrate at 6000 to 18,000 Hz. A couple of 80 or 120 mm muffin
> fans at the back or front, pushing air in (hence the deep
> dimensions), but the top and bottom would need recesses to allow
> sufficient airflow when the positions above and below are filled.
>   
How are you getting these 80 or 120mm fans in a 1U chassis? Remember you 
got barely 45mm to play
with at the back and front of the switch. How are you going to mount a 
80mm or 120mm fan on there? Are you assuming that the units mounted
above (or below) your switch is a short 1U? You can't assume that...
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