Explanation: MAXABARSADDRESSSPACE(nn) is an optional parameter specifying the maximum number of concurrent aggregate backup and recovery address spaces that DFSMShsm supports. For nn, substitute a decimal number from 1 to 64 to represent the number of secondary address spaces that can run concurrently for aggregate backup and recovery.
SMS relationship: Parameter has the same meaning when applied to SMS-managed or non-SMS-managed DASD volumes or data sets.
SETSYS default: None.
DFSMShsm default: If you do not specify this parameter on any SETSYS command, the DFSMShsm default is one.