4. Operation › 4.4 Administering CA MICS › 4.4.8 CA MICS Administration in SMS-Controlled Environment › 4.4.8.2 CA MICS Tape Mount Management

4.4.8.2 CA MICS Tape Mount Management

CA MICS generates some JCL that uses the UNIT=AFF parameter
to stack multiple data sets on the same tape and minimize
tape mounts during database backup and restore.  Some
installations use SMS ACS routines to redirect some tape data
sets to DASD.  This can cause failures when trying to run the
CA MICS jobs that use UNIT=AFF. CA MICS jobs that use the
UNIT=AFF parameter are the BACKUP/RESTORE jobs, the WEEKLY
job, the MONTHLY job, and MONTHACT.

The problem occurs when one or more of the data sets
(generally, the smaller data sets) are redirected to DASD,
but the larger data sets are written to tape.  In addition,
semi-stacking interferes with the file sequence and causes
LABEL=(n+1,SL) clauses to fail.

The solution is to direct all of the tape data sets to tape.
You may need to change your ACS routines so that these data
sets will be written to tape.


Refer to IBM APARs II06908 and OY53625 for more information.
See also SAS Usage Note V6-SYS.SASIO-D302.