Disk jobs abending with S878-10 errors after z/OS 2.4 upgrade or RUCSA enablement on z/OS 2.3

Products

• Disk Backup and Restore - MVS

Issue/Introduction

After upgrade to z/OS 2.4 from z/OS 2.2, Disk jobs are abending with S878-10 abends .   After increasing the REGION sizes to 0M the jobs still abend with S878-10.

 

Environment

Release : 14.0

Resolution

The issue was caused by the enablement of the RUCSA after the z/OS 2.4 upgrade.   10M was specified for below the line storage.   RUCSA enablement takes up 3M of it.  IBM mentioned specifying 0M would only be allowing 6M for storage.   

As a work around  splitting the jobs apart and not backing up so many volumes at once would help.