Dynamic Cache Management

This section provides the steps for establishing Dynamic Cache Management. 
vtape
This section provides the steps for establishing Dynamic Cache Management. 
Dynamic cache management provides greater cache capacity, reduces I/O utilization, and significantly improves overall throughput compared to using Static Cache.
Up to 50% reduction in CPU utilization and a 50% increase in throughput is encountered when using Dynamic Cache. Cache management is facilitated because there is a one-to-one relationship between the Linear Data Set (LDS) and the Virtual Volume.
The following additional cache features are available only if Dynamic Cache is implemented:
  • Idle Space Released
  • Secondary Extents
  • DASD Volumes Spanning
  • Maintains free space in the Storage Group to eliminate mount and recall delays
  • Virtual VOLSER in the LDS name
  • Reduction of allocation request to fit on a DASD volume
  • Setting Concurrent Read Access to Virtual Volumes Created by CA Disk
If you want to convert from existing static cache to dynamic cache, see Conversion Procedures.