MAXIMUM TAPE UNITS field (RESTORE_TAPEUNITS subsystem parameter)

When the RESTORE SYSTEM utility restores a system-level backup that has been dumped to tape, it allocates a number of tape units or tape drives. The RESTORE_TAPEUNITS subsystem parameter specifies the maximum number of tape units or tape drives that the RESTORE SYSTEM utility can allocate.

Acceptable values: NOLIMIT or 1–255
Default: NOLIMIT
Update: option 36 on panel DSNTIPB
DSNZPxxx: DSN6SPRM RESTORE_TAPEUNITS

The default value, NOLIMIT, means that the RESTORE SYSTEM utility will allocate as many tape units as necessary to restore the system-level backup. You can override the setting for MAXIMUM TAPE UNITS by executing the RESTORE SYSTEM utility statement with the TAPEUNITS keyword.