Glenn, of course it make sense.  It is an attempt at
standardization.
Supporting one OS family is a lot easier than supporting many.
And
I also know of several companies that have standardized on one
type
of mainframe.  It makes it simpler for all IT personnel.  For the
same
reason many shops standardize on one language.

Regards,

Nick D.

Glenn Cole wrote:
>
> Ken Sletten writes:
>
> > FWIW, I will add that in an effort to solve the "Tower of Babel" problem
> > with multiple operating systems, senior manager in the US Navy have
> > put out something called "IT-21".  The way I read it (and I have only
> > skimmed it;  one of these days I will go back and try and understand
> > the details), it says that *ALL* Navy desktop / *network* operating
> > systems will be MS Windows 95-98-2000 / NT based ASAP...  and
> > approval of exceptions (if any) will be *extremely* limited.
>
> I'm having difficulty seeing why that makes any more sense than requiring
> all "mainframe" OSs to be the same.
>
> --Glenn