Introduction › Introduction to CA MIM › Components and Facilities › CA MIA Tape Sharing

CA MIA Tape Sharing

CA MIA enables z/OS sites, z/VM sites, and mixed z/OS and z/VM sites with CMS users and z/OS guests, to share tape devices automatically and safely. CA MIA provides integrity for data that resides on tape and eliminates the necessity for manual commands typically associated with tape device sharing.

CA MIA consists of the following facilities:

Global Tape Allocation Facility (GTAF)

Prevents jobs on different systems from simultaneously allocating the same tape, and prevents jobs from allocating devices already in use on another system.

Tape Preferencing and Control Facility (TPCF)

Lets you influence device selection during the z/OS allocation process. TPCF also responds automatically to the messages z/OS issues when a job cannot allocate a suitable online device.