Alan,

I disagree.

Yes, you still have the possibility of a resource shortage.

However, partitioning provides the installation more flexibility in
protecting critical resources.

As far as how should CP respond, if sufficient page space is unavailable
within a particular backing storage pool according to the criteria set
forth, then the request (LOGON, DEFINE STORAGE) should be denied.

John P. Baker

-----Original Message-----
From: The IBM z/VM Operating System [mailto:[email protected]] On
Behalf Of Alan Altmark
Sent: Monday, September 21, 2009 2:03 AM
To: [email protected]
Subject: Re: Storage Management Enhancement Ideas

And does not address the core issue: At some point, there is a shortage of 
resources.  How should CP respond?

o Deny the request?
o Wait for the resources to be available? 
o Steal the resources from someone else?

You can partition and reserve all the resource you want, but eventually 
you run out.

Alan Altmark
z/VM Development
IBM Endicott

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