Example using tape drives
Tape drives are usually owned by only one machine, but they can be used by a started task workstation and a computer workstation on the same machine, so you can, for example, allocate a tape pool to workstations CPU1 and STC1.
Do not keep this resource on error, because you normally want to release a tape drive for other work while you prepare a rerun of a failed job.
If you have 10 drives (quantity is 10), you do not need to allocate all 10 drives to both STC1 and CPU1. If CICS® runs as a started task, you might need to reserve a tape drive for dumps of its journal, so give STC1 exclusive use of one tape drive in the intervals when CICS® is available.
Specify the resource like this:
- Name
- TAPES
- Quantity
- 10 (for example). You need not make all the drives available for automatic allocation.
- Used for
- B (both planning and action).
- On-error action
- Free all.
- Workstations
- Connect to all workstations that can use the tapes.
- Intervals
- Reduce the number available when online systems might need a tape, and set the number to zero when the tape room is unstaffed.