21 Oct
2005
21 Oct
'05
11:52 a.m.
>>>> "Mark" == Mark Tapley
<mtapley at swri.edu> writes:
Mark> .... Problem is the designers actually did
Mark> do _some_ thinking. On its way out the fan in the original
Mark> configuration, the air went over the logic board(s) first, then
Mark> the power supply and drives last. Reverse the fan, it's now hot
Mark> air hitting the logic board. On my system, this caused the SCSI
Mark> controller to fail occasionally.
Interesting. Drives first is normal in storage arrays because drives
are more sensitive to high temperature than logic. It's quite strange
for a logic device to fail as you described; it suggests bad thermal
design or a SCSI controller defect (possibly design, possibly that
specific unit).
paul