Increasing the number of 3390s formatted within an LCU

Complete this task to increase the number of 3390s that are formatted within an LCU.

To increase the number of 3390s that are formatted within an LCU, perform the following:
  1. Define an input/output definition file (IODF) using HCD with the desired device addresses.
  2. Remove the parallel access volumes (PAVs) using the DS6000™ CLI.
  3. Issue Devserv (DS QP,xxxx,nnnn) to the alias addresses to initiate an I/O operation.
    Note: Messages "IOS017I ALIAS DEVICE adev IS UNBOUND" and "IOS001E xxxx, INOPERATIVE PATH" are issued from all the alias addresses. These messages are normal and are not cause for concern.
  4. Activate a new IODF by either performing an IPL or by dynamically activating the new IODF.
    Attention: Ensure that there is sufficient memory in the hardware storage area to store the new configuration.
  5. Add new 3390 volumes to the LCU.
  6. Assign new PAVs.
Parent topic: Parallel access volumes
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