In an environment in which the storage groups and storage classes
do not change, the preceding results are adequate to allow DFSMShsm
to manage the data sets. However, you can expect problems in an environment
that is subject to storage group reconfiguration or subject to changes
in the mapping of data sets to storage classes. These problems can
discourage the use of DFSMShsm space management for these data sets
and might require special contingency procedures for availability
management. The problems that occur relate to:
- Changes in the storage group
- Changes in the storage-class-to-data-set mapping
- Conversions of data sets to the GUARANTEED SPACE storage class