From: Dr. David Kirkby (davek@medphys.ucl.ac.uk)
Date: Thu May 29 2003 - 13:22:52 EDT
> I have a Dec Personal Workstation 600a (600 MHz CPU) running Tru64 5.1B.
> Is it possible to power off the machine, without physically touching the
> power switch? Suns, including some old ones with CPUs as slow as 40 MHz
> have a 'poweroff' command which will remove all power to the machine
> once the machine is shut down, but I don't seem to discovered anything
> under Tru64 to do this.
Thanks to
Iain Barker, Dr. Thomas Blinn and Graham Allan.
Everyone seem to agree it was not possible on my machine.
Dr. Thomas Blinn said it is possible on a few (very few) of the larger +
newer machines. He, like myself thought it was a useful feature if
implemented correctly.
Certainly it's been useful on my Suns, where I tend to test software on
a large number of machines then want them switched off together. There's
no need to check the system is down before powering it off, since the
software/hardware only powers it off when its safe to do so.
Iain Barker said "Not sure about that specific machine. On my AS4100's
it can be done from RCM. Type ^]^]RCM and then poweroff. But I think RCM
may be a server-only feature."
Graham pointed out that also its not possible on the Personal
Workstation for it to restart following a power failure. My Sun Ultra 80
(and I think the much older SPARCstation 20's) have a memory, so know if
they were powered off on purpose or not.
Dr. David Kirkby PhD,
Senior Research Fellow,
Department of Medical Physics,
University College London,
11-20 Capper St, London, WC1E 6JA.
Tel: 020 7679 6408 Fax: 020 7679 6269
Internal telephone: ext 46408
e-mail davek@medphys.ucl.ac.uk
Web page: http://www.medphys.ucl.ac.uk/~davek
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