Figure 1 shows vital record specifications coded for a data set that is updated on a regular but infrequent basis. You want the data set to be resident in a library when the volume is required, but at other times you want the volume removed from the automated tape library.

RMM ADDVRS DSNAME('USERA.MONTHLY.DATA') LASTREFERENCEDAYS COUNT(365) -
    LOCATION(LOCAL) STORENUMBER(27) NEXTVRS(N1)
RMM ADDVRS NAME(N1) LOCATION(HOME) STORENUMBER(30)

In Figure 1 data set USERA.MONTHLY.DATA is always stored in the LOCAL storage location for the first twenty seven days since it was last referenced, it is then returned to its home location ready for the monthly update. The job is not delayed because the volume is in the library when the job runs. The job references the data so it starts off the vital records selection process at the LOCAL store for the next 27 days. If the data set is not referenced for one year it will be eligible for expiration processing.