Sun Fire V440 problem

[Przem]

Hello

I have old but nice Sun Fire V440.

Unfortunately it has problem, as its power supply has filed:

PS0 P_PWR okay
PS0 FF_POK failed
PS1 P_PWR okay
PS1 FF_POK okay

I dont have spare part, and will not have it soon...

This faulty PS makes one of CPU overheating:

rmclomv: SC initiating soft host system shutdown due to fault at
C1.P0.T_CORE.

and indeed temp was high:

C0/P0 T_CORE okay
C1/P0 T_CORE warning (102C)
C2/P0 T_CORE okay
C3/P0 T_CORE okay


I was trying to disable this CPU using "psradm -f X" command, but no
matter which of 4 cpus was off, temerature on C1/P0 didnt dropped.

It should better work from OBP level, but I dont know how do it...

Anyone can help please?

--

Przem

[ChrisQ]

It's a little while since I looked at a V440, but the best way to solve
the problem temporarily is the shut the system down, Take out the
overheating
cpu from the backplane, reassemble and reboot. It should run fine on
1,2, or 3
cpu's out of the 4 and the power load will be less as well. Depending on the
system load, you may not notice much difference anyway. Last time I checked,
a V440 with 4 1.6Ghz cpus was showing 500 or so watts consumption even
without
any peripherals, not exactly cheap running 24x7 !.

A power supply fault should not cause damage to any other part of the
system,
unless one of the rail voltages spiked high during the failure, but if
one of
the cpu's is showing an abnormal temperature, it's almost certainly faulty
and needs to be removed from the backplane anyway. Assume that the fans
are all
ok and no blockages ?.

The system should run fine on i psu as well, though you do of course
lose the
redundancy...

Regards,

Chris

[John D Groenveld]

[followups to comp.sys.sun.hardware]
In article <6oLWs.495053$Gx3.3...@fx11.fr7>,

ChrisQ <me...@devnull.com> wrote:
>A power supply fault should not cause damage to any other part of the
>system,
>unless one of the rail voltages spiked high during the failure, but if
>one of
>the cpu's is showing an abnormal temperature, it's almost certainly faulty
>and needs to be removed from the backplane anyway. Assume that the fans
>are all
>ok and no blockages ?.
>
>The system should run fine on i psu as well, though you do of course
>lose the
>redundancy...

I'm curious whether the OP swapping the two power supplies might help.
I've seen dual PS systems which will limp along with a single fault
but not if the fault is on the first PS.

John
groe...@acm.org

[Cydrome Leader]

a v440 will run fine with one power supply dead, the machine should not
overheat.

open the machine up and look for dust or junk blocking the cpu heatsinks.

you may just have a bad processor or heatsink assembly too.

[Przem]

Hi

Thanks for hints.

Thing is that CPU overheating started just after PS failure.

I will try to ask for removing both, hope it will make server working
until replacement...


But still its easier for me to do "software" disable, best from OBP...

--

Przem