Tom Lyon ✅ on nostr

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Tom Lyon ✅

@Tom Lyon ✅ 1785554777

Datamation, April 1970.
The 360/195 was the fastest IBM machine at the time.

Tom Lyon ✅

@Tom Lyon ✅ 1784652460

It seemed pretty good at the time!

Abysmal MTTF performance for the IBM 360/91 at Princeton in the 74/75 school year.
From a Computer Center newsletter.
The general improvement trend in software MTTF is as they matured from the conversion from HASP to LASP just before these metrics.

Poul-Henning Kamp · 4w

nostr:nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpq86sn5wsyd3nkatggdesfu8u8nl4mehjgfrpxzf8afu2uhwdlux9qfkeuv4 "… but I'm satisfied because it runs just like an IBM" :-) https://www.youtube.com/watch?v=Oi4W0UPa_xs

Tom Lyon ✅

@Tom Lyon ✅ 1783358549

OTD 1995: Legato Systems goes public.
Founded by brother Bob and other folks from Sun.

Red Herring: https://drive.google.com/file/d/1KWCzF5phK5vi6gUSKJ83eFyy25ofqS_j/view?usp=sharing

Tom Lyon ✅

@Tom Lyon ✅ 1783006403

OTD 1959: Fire destroys Pentagon data center. Data center design & safety got a lot more serious after that.

penguin42 · 7w

nostr:nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpq86sn5wsyd3nkatggdesfu8u8nl4mehjgfrpxzf8afu2uhwdlux9qfkeuv4 Did they ever consider backups to some other federal site, or just still paranoid that it never leaves the building?

Tom Lyon ✅

@Tom Lyon ✅ 1782524287

Name that programming language!
(Wrong answers appreciated!)

Hint: "Personal" computer, circa 1963.

Number6 :syncthing: · 8w

nostr:nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpq86sn5wsyd3nkatggdesfu8u8nl4mehjgfrpxzf8afu2uhwdlux9qfkeuv4 Not sure, but looks like some assembly is required.

Tom Lyon ✅

@Tom Lyon ✅ 1776012429

OTD 1989: #SunMicrosystems announces the SPARCstation 1, aka Sun 4/60, aka "Campus".
Also first use of SBus.

https://theretroweb.com/motherboards/s/sun-sparcstation-1

Milcom Miasma · 19w

nostr:nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpq86sn5wsyd3nkatggdesfu8u8nl4mehjgfrpxzf8afu2uhwdlux9qfkeuv4 Man I miss my SPARCstation! <sniff!>

Tom Lyon ✅

@Tom Lyon ✅ 1774881502

OTD 1951: Census Bureau accepts the first UNIVAC system - with 59% uptime.

https://dl.acm.org/doi/epdf/10.1145/1434770.1434773

Tom Lyon ✅

@Tom Lyon ✅ 1774369234

Today! 25th anniversary of MacOS X!

Tom Lyon ✅

@Tom Lyon ✅ 1772637880

OTD 1986 (40 years!): #SunMicrosystems goes public.

Scan of Red Herring with lots of facts and figures:
https://drive.google.com/file/d/1MXh04jhmrqIO8hbCs7pRxlEZ-ql59s7R/view?usp=sharing

Chuck · 24w

nostr:nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpq86sn5wsyd3nkatggdesfu8u8nl4mehjgfrpxzf8afu2uhwdlux9qfkeuv4 Heh, and on March 10th it will be 40 years ago that I joined Sun. 😃 Even though my future manager at the time had been strongly suggesting I move my start date up by a week but being ...

Tom Lyon ✅

@Tom Lyon ✅ 1772036586

OTD 1975, Digital announces the #PDP-11/70.
With up to 4 Megabytes(!) of memory.

Princeton's PDP-11/45 had 80K bytes of memory. Ran UNIX just fine.

Tom Lyon ✅

@Tom Lyon ✅ 1771953159

OTD 1982: The founding of #SunMicrosystems.

note179re5...

Tom Lyon ✅ @Tom Lyon ✅ 1771623115

@nprofile1q... @nprofile1q... Lots of such tape images here: http://www.bitsavers.org/bits/Sun/

But, even older, the original DECtapes could be randomly read & written, so in hours (not moments) of desperation they could host filesystems.

Poul-Henning Kamp · 26w

nostr:nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpq86sn5wsyd3nkatggdesfu8u8nl4mehjgfrpxzf8afu2uhwdlux9qfkeuv4 nostr:nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpq3us8dx3eaa9x4am506elrml8tjlw3v54cfwmr8sx7p3al97gxqvs74d5e9 nostr:nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpqz0ln8zjc4rvdqn257...