
BIM-EPIC Dataset Definition–Tapes
User Reference
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BIM-EPIC Dataset Definition–Tapes
Description BIM-EPIC dataset definitions (EDD) for tapes consist of several
components. The following sections provide an overview of each
component.
Standard Label The label specifies whether an output tape dataset is created on a labeled
tape or an unlabeled tape.
Tape Density Tape density specifies which density to use when creating a tape dataset.
When a density is specified, BIM-EPIC scans only the tape drives that
support the specified density when looking for a valid scratch tape. For
example, you can use the tape density field to create a dataset on cartridge
tapes only.
You can specify a default density for your site using the MODE
configuration option. However, specifying a density in the BIM-EPIC
dataset definition overrides the MODE default. Specifying a density in
the JCL overrides both the MODE default and the BIM-EPIC dataset
definition tape density. If no density is specified in any of these places,
BIM-EPIC uses the last density that was used on the selected drive.
Prime Dataset
Name
The prime dataset name links all datasets in a multi-dataset group. The
link is created in the DSN Catalog record and allows BIM-EPIC to group
datasets automatically. The first dataset on the tape is called the prime
dataset. The second and subsequent datasets on the tape are called
subdatasets.
Multi-dataset processing can be complex and requires pre-processing
before a multi-dataset group can be created.
Tape Pool ID The tape pool ID associates a dataset with a particular tape pool. Once a
dataset is assigned to a tape pool, the dataset version can be written only
on scratch tapes from the assigned tape pool. Datasets not assigned to a
tape pool can be written only on scratch tapes that are not assigned to a
tape pool.
Owner ID The owner ID is a secondary pooling mechanism for tape datasets. An
owner ID is a two-character code that matches the first two characters of a
tape volume serial number. Owner ID is provided primarily for
compatibility with older tape management systems. If an owner ID is
specified for a dataset, all new tape versions must be created on tape
volumes which begin with the owner ID two-character code.
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