z/OS DFSMShsm Implementation and Customization Guide
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Implementing partially unattended operation with cartridge loaders in a nonlibrary environment

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

Maximum automation of your tape processing environment is possible when you process tapes in an SMS-managed tape library (see SMS-managed tape libraries); however, you can automate your tape processing in a non-SMS-managed tape environment by setting up cartridge loaders for unattended operation.

The cartridge loader, a hardware feature of 3480, 3480X, 3490, and 3590 devices, provides a non-SMS-managed tape environment with the ability to partially automate tape processing by allowing the operator to pre-mount multiple output tapes for migration, backup, or dump processing. By defining a global scratch pool, and by marking partially filled tapes full, you create an environment where migration or backup data sets or a dump copy are mounted and written to without operator intervention.

The allocation of cartridge-type devices is affected by:
  • The cartridge loader switch settings that you select
  • The scratch tape pool
  • The way that DFSMShsm selects the first output tape (initial selection) and selects the tapes to continue with (subsequent selection)
  • The way that MVS™ selects devices for allocation
  • The way that you restrict device selection
  • The way that you handle tapes that are partially full
  • The way that DFSMShsm manages empty tapes
  • The way that DFSMShsm manages the protection for empty tapes
Parent topic: Implementing the performance management policies for your site

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