[asterisk-users] Quiet 24 port POE gig switch

[Singer XJ Wang]

We got a few of those in 1U chassis.. if you think those are quiet...

Steve Underwood wrote:
> Singer XJ Wang wrote:
>> [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...
> A number of 1U products use large impeller fans. They take more 
> internal space in the chassis, but they are slower and quieter. Tiny 
> whiny seems to be the current fashion, though.
>
> Steve
>
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