real shutdown SMP and Alpha?

[Steffen Grunewald]

Hi,

my question is not exactly FAI related, but probably the expertise is here:
I have to shut down a really large number of (a) SMP-686 and (b) Alpha
boxes on request. This should be done by software (and for (a) I did this
by compiling my own kernels, with apm-real-mode-power-off set to y) to 
still be able to etherwake the machines if necessary. 
I want to avoid making my own kernel (mostly for security reasons).
Is there a safe way to achieve power-off (not only "Power down." written
to non-connected consoles) for instance by kernel boot parameters?
(b) How to switch off an Alpha from software?

Cheers, and thanks
 Steffen

-- 
Steffen Grunewald * MPI fuer Gravitationsphysik (Albert-Einstein-Institut)
SciencePark Golm, Am Mühlenberg 1, D-14476 Potsdam * http://www.aei.mpg.de
* e-mail: steffen.grunewald(*)aei.mpg.de * +49-331-567-{fon:7233,fax:7298}
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