Hello All,
In HSM, when we are taking backup of dump class volume, it always
using scratch tape. But we want to change this configuration, so that I
should use existing tape which has data rather then new scratch tape.
We are doing this because we are planning to migrate our 3494 ATL to TS3400
tape library . TS3400 Tape library has only 17 data cartridge slot in
compare to ATL 3494 has many. So that whenever HSM takes backup in tape it
should use only exsiting data cartridge until it becomes full. Once it
becomes full then it should look for new scratch tape.
For doing this configuration, I have made below changes in HSM parmlib
member. IN parmlib definition as below for taking dump. Every Wednesday it
takes dump between 5 to 6 AM.We have two dump volume in our systems,
DEFINE -
DUMPCYCLE(NNNYNNN /* 7-DAY DUMP CYCLE WITH DUMP */ -
CYCLESTARTDATE(1992/05/17)) /* DONE ONLY WEDNESDAY */
/* */
DEFINE DUMPCLASS(MIGDMP /* FOR CLASS MIGDMP */ -
UNIT(ATL90) /* USE ATL90 DEVICES */ -
RETPD(16) /* KEEP DUMP COPIES FOR 16 DAYS */ -
AUTOREUSE /* MAKE VOLUMES AVAIL FOR REUSE */ -
NORESET /* DO NOT RESET CHANGE BIT */ -
STACK(10) /* 10 DUMP COPIES PER TAPE */ -
NODSRESTORE /* NO SINGLE DATASET RESTORES */ -
FREQUENCY(5) /* MIN DAYS FROM LAST VOL DUMP */ -
VTOCCOPIES(1)) /* KEEP 1 VTOC COPY DATASET */
/* THIS DUMP CLASS IS FOR */
/* THE WEEKLY DUMPING OF ML1 */
/* VOLUMES */
/* */
SETSYS -
AUTODUMPSTART(0300 0400)
/* PROVIDE TIME TO START AUTO */
/* DUMP, LATE START TIME, */
/* AND QUIESCE TIME. AUTO DUMP */
SETSYS -
SELECTVOLUME(
BACKUP(SCRATCH)
MIGRATION(SCRATCH)
DUMP(SCRATCH))
Now I have changed this SCRATCH to SPECFIC using below commands.
HSENDCMD SETSYS SELECTVOLUME (MIGRATION(SPECIFIC))
HSENDCMD SETSYS SELECTVOLUME (BACKUP(SPECIFIC))
HSENDCMD SETSYS SELECTVOLUME (DUMP(SPECIFIC))
But still I noticed that while taking dump, HSM using scratch tape .
Please provide your pointers.
Jake
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