I wonder how much I lose, or overhead gained, by having the other LPAR being
a "gateway" for the 2nd level to the first level resources.

On Mon, Oct 4, 2010 at 9:36 AM, Rob van der Heij <[email protected]> wrote:

> On Mon, Oct 4, 2010 at 3:24 PM, John P. Hartmann <[email protected]>
> wrote:
> > It has to be a real CTC where one end is attached to the virtual
> > machine and the other end is activated to CP.
>
> Right. Experience shows that a lot of experts will insist that this is
> "invalid" in the IOCP configuration. It isn't, but rather shows their
> MVS sysplex background where you don't do this (and maybe their IOGEN
> / HCD flags them as suspicious). But it does not make you go blind nor
> does it grow hair on your hands... ;-)
>
> When you have them between systems / LPARs then it's a moot point
> because you invested in the two CHPIDs already. But for shops with
> just one z/VM image and a guest, it's a pity CP does not connect to
> virtual CTCs.
>
> | Rob
>



-- 
Mark D Pace
Senior Systems Engineer
Mainline Information Systems

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