Advanced Topics › TPCF Device Processing › z/OS ACL Preferencing › Specific, Temporary Requests

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Specific, Temporary Requests

If a job requests a specific volume, or the input data set is temporary (that is, the data set will not be retained at the end of the job), then z/OS prefers to allocate assignable devices in this order:

  1. Assignable devices on which the ACL feature is not installed
  2. Assignable devices on which the ACL feature is installed, but inactive
  3. Assignable devices on which the ACL feature is installed and active

As a result of ACL processing, TPCF preference logic may be overridden.