z/OS MVS JCL Reference
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Request for specific tracks

z/OS MVS JCL Reference
SA23-1385-00

For an SMS-managed data set (one with an assigned storage class), do not code ABSTR.
ABSTR
Requests that the data set be allocated at the specified location on the volume.
primary-qty
Specifies the number of tracks to be allocated to the data set.

The volume must have enough available space for the primary quantity. If it does not, the system terminates the job step.

address
Specifies the track number of the first track to be allocated. Count the first track of the first cylinder on the volume as 0. Count through the tracks on each cylinder until you reach the track on which you want the data set to start.
address
Specifies the track number of the first track to be allocated. Count the first track of the first cylinder on the volume as 0. Count through the tracks on each cylinder until you reach the track on which you want the data set to start. The absolute track address must be a decimal number equal to or less than 65535.
Note: Do not request track 0.
directory
Specifies the number of 256-byte records needed in the directory of a partitioned data set.
Note: When creating a partitioned data set, you must request space for a directory.

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