z/OS DFSMShsm Implementation and Customization Guide
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Tape eligibility when output is not restricted to a specific nonlibrary device type

z/OS DFSMShsm Implementation and Customization Guide
SC23-6869-01

When output is not restricted to a specific device, DFSMShsm selects the first available tape. No preference exists between 3490, 3480, 3480X and 3590 devices. The compaction status assigned to an empty 3480X tape is based on a combination of the tape device associated with the tape, and whether either SETSYS TAPEHARDWARECOMPACT or NOTAPEHARDWARECOMPACT has been specified. Table 1 shows which tapes are selected when selection is not restricted to a specific group of devices.

Partially full cartridges that are assigned a 3480 device name can be used on a 3480X device, but the data will not be compacted on that tape.

Table 1. Initial Tape Selection When Output is Not Restricted to a Specific Device
Empty Partial SETSYS NOTAPEHARDWARECOMPACT SETSYS TAPEHARDWARECOMPACT
3480   Eligible Eligible
  3480 Eligible Eligible
3480X   Eligible Eligible
  3480X (N) Eligible Ineligible
  3480X (C) Ineligible Eligible
3490   Eligible Eligible
  3490 Eligible Eligible
3590-1   Eligible Eligible
  3590-1 Eligible Eligible
Legend:
  • N — Noncompacted
  • C — Compacted
Note:
  1. The IBM® 3592 Model J can select only the following media types: MEDIA5, MEDIA6, MEDIA7 and MEDIA8. These tapes are not selectable by any previous technology drives.
  2. The IBM 3592 Model E05 and E06 can select only the following media types: MEDIA5, MEDIA6, MEDIA7, MEDIA8, MEDIA9 and MEDIA10.
  3. The IBM 3592 Model E07 can select only the following media types: MEDIA9, MEDIA10, MEDIA11, MEDIA12, MEDIA13.

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