Explanation: MAXDSRECOVERTASKS(nn) is an optional parameter specifying the maximum number of data set recovery tasks DFSMShsm can concurrently process for both DASD and tape. This parameter allows an installation to determine the appropriate tasking level to recover individual data sets, based on the amount of disk storage and the number of tape drive resources available. The actual number of effective tasks may be limited if the number of backup resources is less than the total tasks specified. For nn, substitute a decimal number from 1 to 64 to represent the number of data set recovery tasks to be run concurrently.
The value you specify for MAXDSRECOVERTASKS applies to data set recovery tasks for both DASD and tape. To limit tape requests to a subset of this value, use the keyword MAXDSTAPERECOVERTASKS instead. The maximum number of tasks from DASD is the value of MAXDSRECOVERTASKS minus the current number of tape tasks specified by MAXDSTAPERECOVERTASKS.
If there are no active tape tasks, the number of disk tasks can reach the value specified by MAXDSRECOVERTASKS. To prevent tape tasks, specify SETSYS MAXDSTAPERECOVERTASKS(0).
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 two tasks.