IBM has at least two occurances of this problem, one at z/OS 1.08,
one at 1.09. And it could be happening to you unless you monitor it. We
have SETSYS PARTIALTAPE(MIGRATION(REUSE) BACKUP(REUSE)) set in ARCCMD00
but when AUTOBACKUP uses a scratch tape, the following happens.
IEC501A M 8701,PRIVAT,SL,COMP,DFHSM,DFHSM,HSM.BACKTAPE.DATASET
IEC705I TAPE ON
8703,M00812,SL,COMP,DFHSM,DFHSM,HSM.BACKTAPE.DATASET,MEDIA4
ARC0120I BACKUP VOLUME M00812 ADDED, RC=0000, REAS=0000
IEC205I SYS18542,DFHSM,DFHSM,FILESEQ=1, COMPLETE VOLUME LIST, 497
DSN=HSM.BACKTAPE.DATASET,VOLS=M00812,TOTALBLOCKS=2
ARC0421I BACKUP VOLUME M00812 IS NOW MARKED FULL
We only noticed this because we are short on scratch tapes, 'cuz
the OPS manager only orders them when we run out. After going to zOS 1.08
we suddenly went from 5-10 scratches being used for hsm backup to 150+. If
you have a large ATL and lots of scratch, this could be happening to you
right now. The tapes get returned after RECYCLE and RMM daily job, but
ATL gets beat hard. We are HOLDing the BAckups until we get this fixed.
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