FDDI, was: Re: [rescue] u2 drive trays

vance at neurotica.com vance at neurotica.com
Wed Aug 20 09:03:10 CDT 2003

On Wed, 20 Aug 2003, Scott Newell wrote:

> >Phase converters rated for constant operation that are big enough to
> >run an S/390 and a full load of peripherals are *very* **very**
> >expensive. Even used.
> Build your own then.  Get a big 3 phase motor (cheap), a contactor,
> overload kickout, switch, and a motor start cap.
> Why does the S/390 even need three phase power?  Blowers?

Yeah.  The disk subsystems also use three phase.  Easier to get very large
quantities of clean DC.

Peace...  Sridhar

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