Can you provide more details on what you mean by expanded? 

Are you asking about changing the way the dataset was allocated? Using EA/EF 
extended addressability (EA) 
Extended format (EF) 

You are asking about allowing a Vs am dataset to expand beyond 4g?


If that is what you are asking, that is done with a Data class change for the 
file and then you need to do an action that will offload/del/def the zFS 

Steps
Setup a Datacls that has the function you want - ea or ef or both
Update ACS code for the file to use that data class
Offload/Del/def dataset

Hope this helps

You could try migrate/recall once the data class is updated


Lizette

-----Original Message----- 
From: Gadi Ben-Avi <gad...@malam.com> 
Sent: May 19, 2019 1:10 AM 
To: IBM-MAIN@LISTSERV.UA.EDU 
Subject: Convert ZFS to Expanded format 

Hi, 
Is there a way to convert a ZFS, or any other VSAM file, to expanded format? 
We are running z/OS v2.3. 

Thanks 

Gadi

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