Memorex LOCK - VERSION 2-24 Especificaciones Pagina 186

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Introduction to the Parameters DD Statements for Tape and Disk Datasets
6-8 User Reference
You can also request CPU and partition independence or common work dataset support with
the DSN parameter (these options are not available with MVS).
The FREE parameter specifies how tape drive assignments are to be handled when the dataset
is closed. When doing multi-dataset processing, use FREE to hold the assignment until all
datasets have been processed. FREE is only valid for tape datasets.
The LABEL parameter determines how long output datasets are retained. In most cases, you
will use it for uncataloged datasets. You can use it for a cataloged dataset when you wish to
override the default retention for a version.
OPTION is a BIM-EPIC DD parameter that has no counterpart in MVS. It allows you to
specify options available in VSE and BIM-EPIC which have no equivalents in MVS.
The SPACE parameter specifies disk space requirements for output datasets. Among other
things, it specifies how much space to use and how to process space after the dataset is closed.
SPACE is optional for cataloged datasets. You can use it to specify an allocation size that is
different from the size in the DSN Catalog, or to inhibit truncation for a version.
SPACE is required for Start Track 1 and uncontrolled datasets.
UNIT specifies the type of device (tape or disk, 3380 or 3390, and so on) to be used for an
output dataset.
The VOLUME (VOL) parameter specifies which tape volume, disk volume, or disk pool to
allocate for an output dataset. For tape datasets, it can be used to specify rewind options for
multi-dataset processing.
FREE
LABEL
OPTION
SPACE
UNIT
VOLUME
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