At Release 12.0, MIA customers have new tools that can aid in diagnosing and resolving delays in tape device allocation:
Delay Detection and Notification (DDN)
Delay Detection and Notification (DDN) continually collects global tape device allocation information. This information is used to diagnose MIMplex wide tape device allocation delay problems. When a problem is detected, an optional warning is generated.*
Note: For customers running VM systems, see COMPATLEVEL Considerations in the Installation Guide.
ANALYZE TAPEDELAY Command
The ANALYZE TAPEDELAY command provides a way for users to request global tape allocation delay information. When issued, this command analyzes tape allocations occurring in the MIMplex.*
These tools are available to all R12.0 customers who specify 'COMPATLEVEL=12.0' in their MIMINIT member. To activate, issue the following MIM command on all MIAplex lpars:
F MIA,SETOPTION DDN=ON
*Please see the MIM Statement and Command Reference and MIA Programming Guides for additional usage considerations.
If you're already using this tool - what are your thoughts on it?