2 Jul
2018
2 Jul
'18
6:55 a.m.
So prohibiting someone from pushing a button differed in what way from
allowing them to pull a plug? I can understand there may have been some
difference in state when/if the machine was rebooted. If I just wanted the
machine to cease sucking power, what's the difference? I never wanted that
box to exist, or come back to life, in whatever color.
On Sun, Jul 1, 2018 at 8:20 PM, William Corcoran <wlc(a)jctaylor.com> wrote:
No! no! no! The 3b2 was one of the first supermicros
to fully integrate
power management with the system. Yanking the cord would be unthinkable
mainly because it was unnecessary. The shutdown script would remove power
to the the system once the system safely went down and buffers were
flushed. You could also depress this massive rocket switch on the side of
the unit and it would kick off the powerdown script. It is noteworthy that
the 3b2 power switch was stateless...allowing human and computer to turn
off the power.
Finally, the 3b2 is probably the only system in the world with system
diagnostics so in depth that they were nearly as significant as the
operating system. It’s a telecommunications thing. Interestingly, the
color of the 3b2 was similar to a VAX Brown and White.
On Jul 1, 2018, at 6:24 PM, John P. Linderman <jpl.jpl(a)gmail.com> wrote:
Puns aside, anyone who didn't consider pulling the plug was probably not
someone who should be bringing the system down.
On Sat, Jun 30, 2018 at 10:17 PM, Greg 'groggy' Lehey <grog(a)lemis.com>
wrote:
On Saturday, 30 June 2018 at 7:15:07 -0400,
Norman Wilson wrote:
Ron Natalie:
My favorite 3B2ism was that the power switch was soft (uncommon then,
not so
much now). I seem to recall that if the
logged in user wasn't in a
particular group, pushing the power button was a no-op. You didn't
have
sufficient privs to operate the power.
====
Surely you mean the current user didn't have sufficent power.
Or was experiencing too much resistance?
Greg
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