Usage of Disk Native I/O for Data sets Spanning 20 or more Volumes.

Products

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

Issue/Introduction

To activate the Disk Native I/O support for data sets existing on more than 20 volumes, remove values of SYSPARM USEDSSIO that invoke the DSS Data Mover.

Environment

Release: Disk™ Backup and Restore 12.5

Resolution

If MAXVOLS is explicitly included, remove it:

Old: USEDSSIOMAXVOLSPDSEHFS
New: USEDSSIOPDSEHFS

If MAXVOLS is implicitly included with the Asterisk value, move to An explicit list:

Old: USEDSSIO*
New: USEDSSIOHFS,HWCOMPR,LDS,PDSE, LARGE

PTF RO15000 for R12.0 provides the native support for BKP/ARC/RST/REC of data sets spanning more than 20 volumes.