z/OS DFSMSdss Storage Administration
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MAKEMULTI

z/OS DFSMSdss Storage Administration
SC23-6868-01

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   '-MAKEMULTI-'   

MAKEMULTI allows DFSMSdss to convert single volume data sets into multivolume data sets. The default is not to convert single volume data sets into multivolume data sets.

This keyword applies only to SMS-managed target data sets. Only single volume, non-VSAM data sets are eligible to be changed into multivolume data sets.

SMS-managed target data sets are given a volume count (VOLCOUNT) that is either:
  • The number of SMS output volumes specified in the COPY command, if output volumes are specified through OUTDDNAME or OUTDYNAM
  • The number of volumes in the target storage group or 59, whichever is less.

A data set's volume count is the maximum number of volumes to which the data set may extend. At any one time, there may be a mixture of primary volumes (volumes on which space is allocated for the data set) and candidate volumes (volumes on which space may be allocated at a future time). The total sum of the primary volumes and candidate volumes is the data set's volume count.

Note: When MAKEMULTI is specified and VOLCOUNT is also specified with an option other than VOLCOUNT(*), the VOLCOUNT option overrides MAKEMULTI.

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