ABARSOPTIMIZE: Adjusting performance when backing up level 0 DASD specified in INCLUDE list

Explanation: ABARSOPTIMIZE(option) is used to control the value that the ABACKUP function specifies in the OPTIMIZE parameter when invoking DFSMSdss to backup level 0 DASD data sets.

The valid specifications for the option value are:

If value is 1, then DFSMSdss reads one track at a time
If value is 2, then DFSMSdss reads two tracks at a time
If value is 3, then DFSMSdss reads five tracks at a time
If value is 4, then DFSMSdss reads one cylinder at a time

SMS relationship: Parameter has the same meaning when applied to SMS-managed or non-SMS-managed DASD volumes or data sets.

SETSYS default: The default value for option is 3.