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PLenz • yesterday at 9:28 PM • 5 replies • view on HN

From what I know of the ATC system it's closer to IBM System 360 then to Microsoft 365


Replies

PLenz • yesterday at 9:48 PM

@nxobject I meant litterally. The ATC system is derived from the IBM 9020 which was itself a set of interconnected System 360 systems: https://en.wikipedia.org/wiki/IBM_9020

I believe it's all virtualized today

genxy • yesterday at 9:38 PM

Microsoft 363

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nxobject • yesterday at 9:40 PM

That's a little unfair to IBM – sure, you're just as beholden to them for life, but at least the service engineer gets to your rack before you know something's gone wrong!

femto • yesterday at 10:46 PM

That explains the outage. We're just in one of the 5 days of the year they don't cover...

I did a tour of Adelaide airport with Engineers Australia in the 1990s. We visited their obsolete IBM main frame, still running ATC in their computer room. They were tied to it by the certification of the software it was running. Just as you described.

xattt • yesterday at 9:47 PM

In naming the platform, IBM built in some expected downtime.