Re: architectural goals, Byte Addressability And Beyond

On Tue, 4 Jun 2024 23:25:18 -0000 (UTC), Lawrence D'Oliveiro
<ldo@nz.invalid> wrote:
 

On Tue, 04 Jun 2024 13:11:52 GMT, Scott Lurndal wrote:
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Lawrence D'Oliveiro <ldo@nz.invalid> writes:
>

On Sat, 1 Jun 2024 07:47:49 -0000 (UTC), Thomas Koenig wrote:
>

One of the main selling points [of zSeries] is the hardware
reliability ...

>
Quite an expensive way to get reliability. How does an outfit like
Google achieve essentially 0% downtime? By running a swarm of half a
million commodity servers, that’s how.

>
And that's not expensive?

>
Consider the equivalent number of mainframes, with their inbuilt
diagnostics capabilities etc, to match that reliability.

 Can't find it now and don't remember many details, but ...
 A long time ago, there was a story going around about Microsoft vs IBM
regarding the day-to-day operation of their company web sites.  It
claimed that Microsoft was running a ~1000 machine server farm with a
crew of ~100, whereas IBM was running 3 mainframes with a crew of ~10.