Memorex LOCK - VERSION 2-24 Technické informace stáhnout pdf (Strana 258)

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UNIT Parameter

6-42 User Reference

Use Pursuant to Company Instructions

UNIT Parameter

Description Use the UNIT parameter to specifies a device or device type for

processing. UNIT is required for disk output datasets. UNIT is optional

for input datasets that are controlled by the DSN Catalog. If UNIT is not

specified, UNIT=TAPE is assumed, unless the dataset name begins with

$$$. When a dataset name begins with $$$, common work dataset,

UNIT=DISK is forced.

You can also use a group name to request a unit from a group of identical

units. For disk datasets, BIM-EPIC chooses a volume from a volume in

the disk pool specified in the VOLUME parameter. For tape datasets,

BIM-EPIC selects a tape drive based on the mode setting associated with

the device-type specified, if one exists, or associated to the default MODE

setting in the datasets’s catalog entry.

For uncontrolled disk datasets, you can use a group name such as

UNIT=DISK. However, you must also specify a specific volume serial

number in the VOLUME.

With MVS, you can specify a pool name when using UNIT. With

BIM-EPIC DD statements, you must also specify the VOL=SER

parameter.

Syntax The following provides an example of a UNIT parameter syntax.

UNIT={group-name|device-type [,cuu]}

Subparameters The following provides a description of the subparameters you can use

with the UNIT parameter.

Subparameter Valid Default

Specify one of the following (required):

group-name DISK|SYSDA|TAPE|IDRC|CART TAPE

device-type See text None

cuu None

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