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Re: Blast From Past - IBM 670 Mag Drum Computer

From	rbowman <bowman@montana.com>
Newsgroups	comp.os.linux.misc
Subject	Re: Blast From Past - IBM 670 Mag Drum Computer
Date	2025-07-06 03:38 +0000
Message-ID	<mcu9ecF2dvgU20@mid.individual.net> (permalink)
References	(1 earlier) <slrn106csda.1c51.trepidation@vps.jonz.net> <mco1b2F2dvgU3@mid.individual.net> <vNWdnfCkkbY9X_X1nZ2dnZfqnPudnZ2d@giganews.com> <tN9aQ.36360$V4j4.27196@fx46.iad> <104cfh8$1p2q2$3@dont-email.me>

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On Sun, 6 Jul 2025 00:20:56 -0000 (UTC), Lawrence D'Oliveiro wrote:

> The “big” computers were noticeably more vulnerable than little micros
> in one respect: sensitivity to power fluctuations. The least little
> brownout and our VAX machines would be down for about the 15 minutes it
> took to recheck and remount their filesystems and go through the rest of
> the boot process. Whereas the little machines on our desks wouldn’t even
> notice a thing.

We noticed an odd thing. Some, but not all, of the desktops had UPSs. 
During the occasional 'oh shit' flicker the machines without a UPS or 
those with a good UPS didn't have a problem. Those with a bad UPS went 
down hard.

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Thread

Blast From Past - IBM 670 Mag Drum Computer c186282 <c186282@nnada.net> - 2025-07-02 23:30 -0400
  Re: Blast From Past - IBM 670 Mag Drum Computer Allodoxaphobia <trepidation@example.net> - 2025-07-03 12:03 +0000
    Re: Blast From Past - IBM 670 Mag Drum Computer rbowman <bowman@montana.com> - 2025-07-03 18:43 +0000
      Re: Blast From Past - IBM 670 Mag Drum Computer c186282 <c186282@nnada.net> - 2025-07-05 02:14 -0400
        Re: Blast From Past - IBM 670 Mag Drum Computer Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2025-07-05 13:30 +0000
          Re: Blast From Past - IBM 670 Mag Drum Computer rbowman <bowman@montana.com> - 2025-07-05 18:05 +0000
          Re: Blast From Past - IBM 670 Mag Drum Computer Bobbie Sellers <bliss-sf4ever@dslextreme.com> - 2025-07-05 13:25 -0700
          Re: Blast From Past - IBM 670 Mag Drum Computer Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-07-06 00:20 +0000
            Re: Blast From Past - IBM 670 Mag Drum Computer rbowman <bowman@montana.com> - 2025-07-06 03:38 +0000
          Re: Blast From Past - IBM 670 Mag Drum Computer John Ames <commodorejohn@gmail.com> - 2025-07-07 09:09 -0700
            Re: Blast From Past - IBM 670 Mag Drum Computer c186282 <c186282@nnada.net> - 2025-07-07 17:52 -0400
              Re: Blast From Past - IBM 670 Mag Drum Computer rbowman <bowman@montana.com> - 2025-07-08 03:30 +0000
                Re: Blast From Past - IBM 670 Mag Drum Computer c186282 <c186282@nnada.net> - 2025-07-08 01:55 -0400
                Re: Blast From Past - IBM 670 Mag Drum Computer c186282 <c186282@nnada.net> - 2025-07-08 22:36 -0400

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