Explanation: MIGRATIONLEVEL1DAYS(days) is an optional parameter specifying the number of contiguous days a data set must remain unreferenced before the data set is eligible for migration from a level 1 volume to a level 2 volume. For days, substitute a decimal number from 0 to 999. This value includes the time the unreferenced data set was on a primary volume. For example, if you specified MIGRATIONLEVEL1DAYS(15) and the minimum migration age is 5, the unreferenced data set remains on the primary volume for 5 days and on the migration level 1 volume for 10 days before DFSMShsm migrates it to a migration level 2 volume.
SMS relationship: Parameter does not apply to SMS-managed DASD volumes or data sets.
SETSYS default: None.
DFSMShsm default: If you do not specify this parameter with any SETSYS command, the DFSMShsm default is 60 calendar days.