"David Andrews" <[EMAIL PROTECTED]> wrote in message
news:<[EMAIL PROTECTED]>...
> On Tue, 2007-03-06 at 14:47 -0600, Mark Zelden wrote: 
> > On Tue, 6 Mar 2007 15:26:49 -0500, David Andrews
<[EMAIL PROTECTED]> wrote:
> > >Oh man.  I had one user who every few months would ISPF-edit a
large
> > >sequential dataset
> 
> > If one user or ASID can send you into an aux shortage, then you
don't
> > (didn't) have enough aux storage. IEFUSI or no IEFUSI.
> 
> Appreciate the sentiment, but I did say "large sequential dataset".
You
> want me to have enough aux storage to support 32 edits of "large
> sequential dataset" for every TSO user?
> 

If you have those users: yes, period.

More in general: your aux storage should be able to handle (almost) all
the virtual storage that your ASIDs can accumulate, in case most of real
storage must be emptied e.g. for a large dump. Via IEFUSI you can
control how much each ASID can get and you can control how many ASIDs
you allow, so basically you have things under control. If you give away
control and let every user allocate many and large chunks of virtual
storage, things have run out of control.

Keep control of your system all the time. 
Don't allow 1 ASID to bring your system to its knees, specially not an
ASID as unpredictable as a TSO user.

Kees.


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