[TUHS] ATT Hardware

Kevin Bowling kevin.bowling at kev009.com
Mon Jul 2 20:13:38 AEST 2018

They were also offered with the Alarm Interface Circuit card and
Remote Management Package, soft off might have been required as part
of those design considerations for remote management.

On Sun, Jul 1, 2018 at 5:20 PM, William Corcoran <wlc at 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 at 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 at 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
>> --
>> Sent from my desktop computer.
>> Finger grog at lemis.com for PGP public key.
>> See complete headers for address and phone numbers.
>> This message is digitally signed.  If your Microsoft mail program
>> reports problems, please read http://lemis.com/broken-MUA

More information about the TUHS mailing list