It has been a little while working directly with SMS, but if your volumes in 
the OVERFLOW storage group are in an ENABLE status then SMS will treat them the 
same as the volumes in the SVCDUMP storage group.  SMS will look for the best 
"fit" for the dataset allocation.  So if OVEFLOW has more free space and/or 
less fragmented or is on "faster" DASD then SMS may pick OVERFLOW over SVCDUMP.

Depending on your needs, you might consider a special management class for the 
dump datasets that will migrate them quicker than your normal other datasets.  
That may help manage things on a more automatic basis. 

Thanks..

Paul Feller
AGT Mainframe Technical Support

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf 
Of Jesse 1 Robinson
Sent: Friday, April 21, 2017 19:43
To: [email protected]
Subject: SMS STORGRP question

'Forever' we have directed DUMPSRV SVC dumps via ACS routine to STORGRP 
'SVCDUMP', which is defined to a small set of volumes called SVCDxx. We had a 
(major) problem a while back when DB2/CICS wanted to take a humongous dump that 
exceeded the available capacity of of the SVCDxx volumes. So we *added* group 
'OVERFLOW' to the ACS routine expecting this much larger group to accommodate 
dumps that SVCDUMP could not handle. Much to our chagrin, from that moment 
forward, *all* SVCDUMPs went directly to OVERFLOW without even trying to find 
space in group SVCDUMP. We have an RYO mechanism to manage dumps created on 
volume SVCDxx, so dumps created elsewhere are a problem we can live with on 
occasion but not regularly.

I know there are various ways to resolve to this problem, but I want to know 
why SMS is behaving this way and whether there is a purely SMS solution: try 
SVCDUMP first; if no room, then try OVERFLOW. In that order.

.
.
J.O.Skip Robinson
Southern California Edison Company
Electric Dragon Team Paddler
SHARE MVS Program Co-Manager
323-715-0595 Mobile
626-543-6132 Office <===== NEW
[email protected]<mailto:[email protected]>


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