Exclude volumes or a storage group from PDS Compression

Products

• Disk Backup and Restore - MVS
• DISK BACKUP AND RESTORE- ADD-ON OPTIO
• DISK BACKUP AND RESTORE

Issue/Introduction

How is it possible to exclude volumes or a storage group from PDS Compression?

Resolution

Today there is no EXCLUDE parameter available with the SCAN or COMPRESS command to exclude volumes or a storage group from the PDS Compression utility, but you could use the following workaround:

1. Use the CMDGENDSN parameter of the REPORT command to generate a data set that contains entries consisting of the data set names that are to be excluded later from the PDS Compression utility:
   SCAN REALVOLS
   SELECT CRITERIA=(DSORG,EQ,PO)
   EXCLUDE VOL=(volsr1,volsr2,…),SGNAME=sgname
   REPORT MVD,CMDGENDSN=dsn.excludes
   
   
2. Copy the data set dsn.excludes to a parmlib member dsnexcl
3. Run the PDS Compression utility excluding the selected data sets by specifying the previously created member in the EXTABLE parameter of the SCAN command:
   SCAN VOLUMES=(/),
   DSNAMES=(/), 
   THRESHOLD=(90,5,95,0,0), 
   EMPTY,
   ALLOCATE=(80,10,80), 
   EXTABLE=dsnexcl