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[scv5862]

I am currently looking to split up a VSAM backup job, backs up 6 large files to tape, to 3 seperate jobs to run in parrallel.

I am being told that Tape Stacking will do the same thing in one proc but can find no evidence to support this.

Can someone help me out here - this is an example of what I have been told does the saem But I do not see how:

//******************************************************************
//STEP0021 EXEC PGM=IDCAMS,REGION=512K
//*
//SYSPRINT DD SYSOUT=*
//INPUT1 DD DSN=&VFLID..&NMASTR..APPINSU,DISP=SHR
//OUTPUT1 DD DSN=&DFLID..&JBN..&NMASTR..APPINSU(+1),
// DISP=(NEW,CATLG,DELETE),
//* UNIT=&TAPEUNIT,
// UNIT=(&TAPEUNIT,,DEFER),LABEL=(1,SL),VOL=(,RETAIN),
// DCB=(MODELDCB,LRECL=23472,DSORG=PS,RECFM=VB)
//*
//SYSIN DD DSN=&CTCLIB(REPRO01),DISP=SHR
//*
//RCGEN021 EXEC PGM=RCGEN,PARM='U0333',COND=(0,EQ,STEP0021)
//*****************************************************
//STEP0022 EXEC PGM=IDCAMS,REGION=512K
//*
//SYSPRINT DD SYSOUT=*
//INPUT2 DD DSN=&VFLID..&NMASTR..APPL,DISP=SHR
//OUTPUT2 DD DSN=&DFLID..&JBN..&NMASTR..APPL(+1),
// DISP=(NEW,CATLG,DELETE),
// UNIT=&TAPEUNIT,
// LABEL=(2,SL),
// VOL=(,RETAIN,,REF=*.STEP0021.OUTPUT1),
// DCB=(MODELDCB,LRECL=23472,DSORG=PS,RECFM=VB)
//*
//SYSIN DD DSN=&CTCLIB(REPRO02),DISP=SHR
//*
//RCGEN022 EXEC PGM=RCGEN,PARM='U0333',COND=(0,EQ,STEP0022)
//*****************************************************

[scv5862]

Don't worry - I talked to them again and relaised that they have no idea what is going on andthe defer works just as I thought.

Though any assistance on the best and fastest way to back up 3000 + cyl files is appreciated.

[kolusu]

scv5862,

Stacking can be achieved by referring to the volume from the step above. You are already stacking the tapes.step0022 has the stacking coded

[scv5862]

Cheers Koluso.

I will guve the DFSORT a try - at this point I will try anything to get these backps running faster.

Do you have any knowledge of a tool called SNAPSHOT?

[kolusu]

scv5862,

Are you reffering to this
SNAPSHOT???

Kolusu