[rescue] Deciding how to place machines in a rack...

[Sridhar Ayengar]

Patrick Finnegan wrote:
> On Wednesday 05 March 2008, Sridhar Ayengar wrote:
>> One thing to which I can attest:
>>
>> At work, I had a rack with a bunch of 4U machines in the top and
>> louvered doors, front and back.  There was a bunch of unused space in
>> the bottom.  I was getting thermal alarms from the machines.  One of
>> my cow-orkers suggested putting blanking panels in the bottom of the
>> rack. The extra isolation between the front and back of the rack was
>> enough to keep the alarms from going off.
> 
> Populating the rack from the top down can cause other issues too, like 
> tipping over and crushing things if you bump into the rack, or there's 
> an earthquake, or you pull one machine out, or ...

Except there was a heavy PDU in the very bottom of the rack, and the 
rack was bolted to the floor.  And we have a rack-winch.

Peace...  Sridhar