Greetings,
on said hardware (RS/6000 43P model 150) I am experiencing a
behavior which I cannot quite nail down; please note that my
experience with AIX is rather limited, so if it's just me feel
free to point me to self-help resources.

The problem is as follows: after performing either

shutdown -F -h

or

shutdown -F -h -p

after rebooting I do eventually get an email message from diagela:

A PROBLEM WAS DETECTED ON Wed Aug 16 12:16:11 DFT 2006
801014

The Service Request Number(s)/Probable Cause(s)
(causes are listed in descending order of probability):

651-824: System shutdown due to power fault with unspecified cause.

and the output of errpt -d S shows:

IDENTIFIER TIMESTAMP T C RESOURCE_NAME DESCRIPTION
071F4755 0816181206 P H sysplanar0 ENVIRONMENTAL PROBLEM
071F4755 0816154706 P H sysplanar0 ENVIRONMENTAL PROBLEM
071F4755 0816121206 P H sysplanar0 ENVIRONMENTAL PROBLEM
071F4755 0726163606 P H sysplanar0 ENVIRONMENTAL PROBLEM
071F4755 0607094506 P H sysplanar0 ENVIRONMENTAL PROBLEM

My problem is that I don't know if the above is just normal, a
sign that the power supply is dying, or my error. As far as I
could tell "shutdown -F -h" should also power the machine off,
but I could not verify that this is what supposed to happen on
this specific hardware.

Thank you for your consideration,
Davide Bolcioni
--
Paranoia is a survival asset.