z/OS DFSMSdss Storage Administration
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Restoring a preallocated VSAM cluster

z/OS DFSMSdss Storage Administration
SC23-6868-01

Restoring a VSAM cluster that has been preallocated is allowed if the following are the same on the source and the destination volumes:
  • The number of components on the volume
  • The beginning relative byte address (RBA)
  • The component names
  • Catalog names
The size of the cluster must be equal to or greater than that on the source volume. (Only the tracks that were dumped are restored.)

You should ensure that the control interval size, allocation unit, and secondary allocation quantity are the same as in the initial definition.

Parent topic: Restoring data sets with special requirements

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