It would appear I have a misconception of the topic.    8-/



Alan Altmark <[EMAIL PROTECTED]>
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10/24/2006 03:28 PM
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        Subject:        Re: Extended storage question.



On Tuesday, 10/24/2006 at 02:55 EST, Steve Gentry
<[EMAIL PROTECTED]> wrote:
> Respectfully, Richard, I ran across some doc somewhere that recommended
that
> the MACHINE TYPE for VMSERx (U and S) machines be set to XC so that
> they can use XSTORE.  Whether VMSERx actually uses x storeage or VM
itself
> handles these moves to and from  x  storage is another matter.
> If necessary, I will look up the doc. regarding the XC recommendation.  

> VMSERVS and VMSERVU come shipped this way (MACHINE XC) from
> IBM.  VMSERVR is MACHINE XA , which, of course, makes sense.

Steve, I think what you saw was a recommendation for XC mode so that SFS
could use VM Data Spaces (DAT-off AR-mode addressable memory).  Data
spaces and XSTORE are horses with vastly different colors.

Alan Altmark
z/VM Development
IBM Endicott


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