ABCs of z/OS System Programming Volume 3 - IBM Redbooks

is not specified, the default VTOC size is the number of tracks in a cylinder minus one. For a
3390, the default location is cylinder 0, track 1 for 14 tracks.
Initializing a volume to be managed in a DFSMS environment
In the following example, a volume that is to be system-managed is initialized. The volume is
initialized in offline mode at the minimal level. The VTOC is placed at cylinder 2, track 1 and
occupies ten tracks. The VTOC is followed by the VTOC index. The STORAGEGROUP
parameter indicates the volume is to be managed in a DFSMS environment.
INIT UNIT(0353) NOVERIFY STORAGEGROUP -
OWNERID(PAYROLL) VTOC(2,1,10) INDEX(2,11,5)
The following example performs an online minimal initialization, and as a result of the
command, an index to the VTOC is created.
// JOB
// EXEC PGM=ICKDSF
//XYZ987 DD UNIT=3390,DISP=OLD,VOL=SER=PAY456
//SYSPRINT DD SYSOUT=A
//SYSIN DD *
INIT DDNAME(XYZ987) NOVERIFY INDEX(X'A',X'B',X'2')
/*
ICKDSF stand-alone version
You can run the stand-alone version of ICKDSF under any IBM System z® processor. To run
the stand-alone version of ICKDSF, you IPL ICKDSF with a stand-alone IPL tape that you
create under z/OS. This function allows you to initialize volumes without the need for running
an operating system such as z/OS.
Creating an ICKDSF stand-alone IPL tape using z/OS
For z/OS, the stand-alone code is in SYS1.SAMPLIB as ICKSADSF. You can load the
ICKDSF program from a file on tape. The following example can be used to copy the
stand-alone program to an unlabeled tape.
//JOBNAME JOB JOB CARD PARAMETERS
//STEPNAME EXEC PGM=IEBGENER
//SYSPRINT DD SYSOUT=A
//SYSIN DD DUMMY,DCB=BLKSIZE=80
//SYSUT1 DD DSNAME=SYS1.SAMPLIB(ICKSADSF),UNIT=SYSDA,
// DISP=SHR,VOLUME=SER=XXXXXX
//SYSUT2 DD DSNAME=ICKDSF,UNIT=3480,LABEL=(,NL),
// DISP=(,KEEP),VOLUME=SER=YYYYYY,
// DCB=(RECFM=F,LRECL=80,BLKSIZE=80)
For details on how to IPL the stand-alone version and to see examples of the commands,
refer to Device Support Facilities User’s Guide and Reference Release 17, GC35-0033.
Chapter 2. Data set basics 51