SPACE=(80,(44,,10)),AVGREC=K
SPACE=(80,(43500,,10)),AVGREC=U
Although a secondary allocation increment has been omitted in these examples, it could have been supplied to provide for extension of the member area. The directory size, however, cannot be extended. The directory must be in the first extent.
Recommendation: The SPACE parameter can be derived from either the data class, the LIKE keyword, or the DD statement. Specify the SPACE parameter in the DD statement if you do not want to use the space allocation amount defined in the data class.
Related reading: For more information on using the SPACE and AVGREC parameters, see Allocating Space on Direct Access Volumes , and also see z/OS MVS JCL Reference and z/OS MVS JCL User's Guide.