You can use the JCL DD statement with the RECORG parameter to create a permanent or temporary VSAM data set. SMS must be active, but the data set does not have to be system managed. The system catalogs a permanent VSAM data set when the data set is allocated.

With SMS, you can optionally specify a data class that contains RECORG. If your storage administrator, through the ACS routines, creates a default data class that contains RECORG, you have the option of taking this default as well.

The following list contains the keywords, including RECORG, used to allocate a VSAM data set. See z/OS MVS JCL Reference for a detailed description of these keywords.

AVGREC—Specifies the scale value of an average record request on the SPACE keyword. The system applies the scale value to the primary and secondary quantities specified in the SPACE keyword. The AVGREC keyword is ignored if the SPACE keyword specifies anything but an average record request.

Possible values for the AVGREC keyword follow:

   U—Use a scale of 1
   K—Use a scale of 1024
   M—Use a scale of 1 048 576

DATACLAS—Is a list of the data set allocation parameters and their default values. The storage administrator can specify KEYLEN, KEYOFF, LRECL, LGSTREAM, and RECORG in the DATACLAS definition, but you can override them.

EXPDT—Specifies the date up to which a data set cannot be deleted without specifying the PURGE keyword on the access method services DELETE command. On and after the expiration date, the data set can be deleted or written over by another data set.

KEYLEN—Specifies key length.

LGSTREAM—Specifies the log stream used. LOG and BWO parameters can be derived from the data class.

KEYOFF—Specifies offset to key.

LIKE—Specifies that the properties of an existing cataloged data set should be used to allocate a new data set. For a list of the properties that can be copied, see z/OS MVS JCL Reference.

LRECL—Specifies logical record length. Implies a system determined control interval size.

RECORG—Specifies the type of data set desired: KS, ES, RR, LS.

KS = key-sequenced data set
ES = entry-sequenced data set
RR = fixed-length relative-record data set
LS = linear data set

REFDD—Specifies that the properties on the JCL statement and from the data class of a previous DD statement should be used to allocate a new data set.

RETPD—Specifies the number of days a data set cannot be deleted by specifying the PURGE keyword on the access method services DELETE command. After the retention period, the data set can be deleted or written over by another data set.

SECMODEL—Permits specification of the name of a "model" profile that RACF should use in creating a discrete profile for the data set. For a list of the information that is copied from the model profile see z/OS MVS JCL Reference.

STORCLAS—Specifies the name, 1 to 8 characters, of the storage class for a new, system-managed data set.

Your storage administrator defines the names of the storage classes you can specify on the STORCLAS parameter. A storage class is assigned when you specify STORCLAS or an ACS routine selects a storage class for the new data set.

Use the storage class to specify the storage service level to be used by SMS for storage of the data set. The storage class replaces the storage attributes specified on the UNIT and VOLUME parameter for non-system-managed data sets.