DD VOLUME Parameter

The VOLUME parameter is used to specify the name of the DASD (Direct Access Storage Device) volume on which a dataset is stored or is to be stored.

The volume can be private and is an optional parameter.

Syntax -

{VOL}=([PRIVATE][,RETAIN][,volume-sequence-number][,volume-count]
{VOL}=[SER=(serial-number[,serial-number]...)]
{VOL}=[REF=*[.stepname][.procstepname].ddname

PRIVATE	Requests a private volume.
volume-sequence-number	Specifies the unique number to identify the volume. The volume sequence number is from 1 through 255. The system assigns the first available volume with the requested space if it is not coded.
volume-count	Specifies the maximum number of volumes. A volume count is a decimal number from 1 through 255. The total volume count for all DD statements in one job step cannot exceed 4095.
SER=(serial-number[,serial-number]...)	Specifies the volume serial number. A volume serial number is 1 through 6 characters. Users can code 255 volume serial numbers on a DD statement.
*.ddname	Specifies the system should get the volume from the previous ddname from previous steps.
*.stepname.ddname	Specifies the system should get the volume from the previous ddname from previous stepname.
*.stepname.procstepname.ddname	Specifies the system should get the volume from the previous ddname from previous stepname of the procstepname.

Examples -

Scenario1 - Defines a PDS on single volume.

//MATEPKP  JOB (123),'MTH',CLASS=A,MSGCLASS=A,MSGLEVEL=(1,1), 
//             NOTIFY=&SYSUID 
//* 
//STEP01   EXEC PGM=IEFBR14 
//DD1      DD DSN=MATEPK.TEST.PDS,
//            DISP=(NEW,CATLG,DELETE), 
//            SPACE=(TRK,(10,10,10),RLSE),
//            UNIT=SYSDA,VOLUME=SER=DEVHD4,
//            DCB=(DSORG=PO,RECFM=FB,LRECL=80,BLKSIZE=800)

Scenario2 - Defines a PDS on multivolume with volume count.

//MATEPKP  JOB (123),'MTH',CLASS=A,MSGCLASS=A,MSGLEVEL=(1,1),
//             NOTIFY=&SYSUID
//*  
//STEP01   EXEC PGM=IEFBR14 
//DD1      DD DSN=MATEPK.IEFBR14.PDS, 
//            DISP=(NEW,CATLG,DELETE), 
//            SPACE=(TRK,(10,10,10),RLSE),
//            UNIT=SYSDA,VOLUME=(,,,3,SER=(DEVHD2,DEVHD3,DEVHD4)), 
//            DCB=(DSORG=PO,RECFM=FB,LRECL=80,BLKSIZE=800)

Scenario3 - Defines a PDS without volume information.

//MATEPKP  JOB (123),'MTH',CLASS=A,MSGCLASS=A,MSGLEVEL=(1,1),
//             NOTIFY=&SYSUID
//*   
//STEP01   EXEC PGM=IEFBR14 
//DD1      DD DSN=MATEPK.IEFBR14.PDS,
//            DISP=(NEW,CATLG,DELETE), 
//            SPACE=(TRK,(10,10,10),RLSE), 
//            UNIT=SYSDA,
//            DCB=(DSORG=PO,RECFM=FB,LRECL=80,BLKSIZE=800)

System assigns default volume to store the dataset.