In this example, the serial number 006250 is written in EBCDIC on a tape volume at a density of 6250 bpi, and the serial number 001600 is written in EBCDIC on a second volume at a density of 1600 bpi.

  //LABEL6   JOB  ...
  //STEP1    EXEC PGM=IEHINITT
  //SYSPRINT DD  SYSOUT=A
  //DDFIRST  DD  DCB=DEN=4,UNIT=(tape,1,DEFER)
  //DDSECOND DD  DCB=DEN=3,UNIT=(tape,1,DEFER)
  //SYSIN    DD  *
  DDFIRST  INITT  SER=006250
  DDSECOND INITT  SER=001600
  /*

The control statements are as follows:

• DDFIRST DD defines the first tape volume to be used.
• DDSECOND DD defines the second tape volume to be used.
• SYSIN DD defines the control data set, which follows in the input stream.
• DDFIRST INITT writes the serial number 006250 on the volume defined in DDFIRST DD. DDSECOND INITT writes the serial number 001600 on the volume defined in DDSECOND DD.