RE: Major Crash from HMC Monitor

I would make sure that you are not pushing your power to it's limit. I
would run two power lines to the rack and split the load. If you have
redundant power supplies, (you really should), they should be plugged in
to separate circuits, not just in the rack but separate feeds to the
rack. Spate UPS's if you have that ability, budget.


Chris Bipes
Director of I.S.
CrossCheck, Inc.

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of ALopez@xxxxxxxxxx
Sent: Thursday, January 10, 2008 10:07 AM
To: midrange-l@xxxxxxxxxxxx
Subject: Major Crash from HMC Monitor

We're moving from an 810 to a 525. The 525 is rack mounted with an HMC.
I went into the computer room after lunch and found the entire rack
dead.
The power was tripped at the circuit box and the first set of plugs in
the rack's power supply was tripped as well.

An external modem for the HMC was plugged in, as was a 1U, drawer
mounted flat screen monitor. The modem was not powered on and still
works now that everything has been reset. The flat screen monitor is
dead. We've verified power to the small power supply behind it.

Needless to say we're not thrilled that the entire system came crashing
down because a monitor decided to short out.

I guess my question is, has anybody else experienced this? We're set to
move this thing into production in two weeks, and heads will roll if we
have the entire company brought down by a flat screen monitor failing.
I pushed for an HMC to have a more reliable means for off site support,
but <mild curse word>, now there's talk of pulling the HMC out and
hooking up a dumb tube as console. I suppose that I could leave the
monitor unplugged, but if this is more than an extreme fluke I'll be
casting my vote for that as well.