[c-nsp] rack power question

[Seth Mattinen]

Justin Shore wrote:
> Bill Wichers wrote:
>> We typically run our network stuff on DC power, and we have lots lower
>> power density there. The biggest problem we see with network stuff is
>> that so much of the devices run sideways air flow (not "in the front,
>> out the back", so we have to do funny air baffle setups to keep the hot
>> air from blowing into the intake of the next rack in the row.
> 
> DC for us too.  I have a pair of 7613s sitting side by side.  The one to 
> the left always runs hotter than the one on the right because they air 
> flow is right to left all the way through.  I need to build a duct for 
> the output air flow.
> 

I've always solved the problem by keeping all the routing/switching gear 
in its own section and rotating their racks 90 degrees. With all the odd 
airflow patterns in various network gear (front to back, back to front, 
left to right, right to left, fanless) it's just easier than buying 
fancy rack fans or making elaborate baffles, assuming you have the floor 
space.

~Seth