On Tue, 28 Jun 2016 12:19:28 -0400, John Eells <ee...@us.ibm.com> wrote:

>What is the *smallest* volume size everyone sees in general use?
>
>For example, will we create any problems if we assume that "everyone"
>has or can define at least a 3390-9 size volume these days?  What if we
>chose 3390-27?

Apologies for being late to the party...to quote Reverend Jim, "ah...I've been 
busy!"

Are you asking because you are considering a ServerPac change?  

We can carve out any size volume we need to, including EAV, though our Storage 
team prefers to keep to "standard" sizes (excepting EAV).  We use and will 
likely retain m1 for Jes2 Checkpoint and Couple DS.  m9 will be used for some 
system volumes (page, spool) on our small systems.  We use m27 for SYSRES and 
DLIB today and will continue to do so until z/OS outgrows them.  We use 2 m54 
for SMP/E and other installation data, which we may eventually consolidate onto 
EAV.

Regards,
Art Gutowski
General Motors, LLC

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